# VoiceCards — Full Context

> Turn anything you need to memorize into voice flashcards. Make cards from notes, photos, or PDFs. Speak your answers or listen hands-free. Back up decks to Google Sheets.

## Publisher
Willow Investments Inc. (also known as MonoR Apps) — voicecards@willowinvt.com

## Product summary
VoiceCards is a mobile flashcard app for speaking and listening practice. Make cards yourself or use AI to turn a topic, up to 10 photos, or one PDF up to 40 MB into a deck. In Speak mode, say an answer and compare the transcript with the answer in your deck. Optional AI grading helps with open-ended responses. In Listen mode, play cards with adjustable pauses, speed, voices, and lock-screen controls. Screen-off playback works while the account has credits or an active listening period. Keep decks on the device or connect Google to save them as spreadsheets in your own Drive. VoiceCards also includes study stats, speaking goals with an estimated finish date, reminders, Today's 5, streaks, and short links for opening connected decks on a computer.

## Stores
- iOS App Store: https://apps.apple.com/app/voicecards-voice-flashcards/id6751734830
- Google Play: https://play.google.com/store/apps/details?id=com.monor.voicecards
- Landing page: https://voicecards.quest

## Study modes
- Speak mode: tap to record, say the answer, the on-device speech-to-text transcribes it and grades it against the answer column.
- Listen mode: text-to-speech autoplay of every card with adjustable pause, speed, and per-side (Q/A) voice selection. Hands-free.
- Exam mode: card flip is locked — answer first, no peeking.

## Features
### Use Google Sheets when you want
Connect your account to keep decks as normal spreadsheets in your Google Drive. Edit them on a computer and sync changes to your phone. You can also keep decks on your device.

### Say the answer
Record your answer and see the transcript right away. VoiceCards compares it with the answer in your deck. You can adjust how closely the wording needs to match.

### Check meaning with AI
Use optional AI grading when more than one answer can be right. It compares your spoken answer with the question and model answer, then returns a result and a suggested answer.

### Listen hands-free
Play cards with your choice of pause, speed, voices, and flip behavior. Screen-off and lock-screen playback works while you have credits or an active listening period.

### Make cards with AI
Enter a topic, add up to 10 photos, or upload one PDF up to 40 MB. VoiceCards turns the material into question-and-answer cards you can edit before studying.

### Choose premium voices
Premium Google Cloud voices use credits when new audio is created. Replays are cached and free. After any purchase, saved premium audio stays premium at zero credits. New audio then uses the device voice.

### Set a speaking goal
Choose how many times you want to answer a deck out loud. Every attempt moves the bar, and VoiceCards estimates your finish date from your pace.

### See your study activity
Check daily, weekly, and monthly attempts, total cards practiced, accuracy, and deck results. Add a daily reminder if you want one.

### Open your deck on a computer
Use a short link such as vcrd.quest/swift-fox-7 to open the connected Google Sheet without copying a long URL.

## Use cases
### Language learning
Build decks for vocabulary, phrases, and conversation practice. Choose from 29 languages, say your answer out loud, and compare it with what your deck expects.

### Exams and interviews
Practice questions for school, entrance exams, certifications, medical boards, or job interviews. If you need to recall it out loud, you can rehearse it here.

### Anything you want to remember
Add dates, definitions, scripture, lyrics, or anything else you want to remember. If it fits into a question and answer, it can become a deck.

## Study methods (guide library at /methods)
### Chunking translation — https://voicecards.quest/methods/chunking-translation
Memorize a language in phrase-sized pieces you can actually reuse. Split real sentences into 2–5-word chunks, make translation card pairs, and drill them out loud. A chunking routine for language learners, built on Miller's recoding research and the lexical approach.

### Speak-aloud active recall — https://voicecards.quest/methods/active-recall
Say the answer before you see it. Out loud, every time. Active recall is the highest-yield study technique in the research; speaking answers aloud strengthens it further. A concrete routine with hints, AI grading, and exam mode.

### The listening loop — https://voicecards.quest/methods/listening-loop
Turn commutes and chores into extra passes over the material. A routine for studying with your ears: loop your deck in Listen mode during commutes, workouts, and chores, then close the loop with spoken recall in the evening.

### The daily-five ritual — https://voicecards.quest/methods/daily-five
Five cards a day beats fifty cards on Sunday. How to build a durable study habit around a one-minute daily quest: anchor it to an existing routine, protect the streak sanely, and let small sessions compound into long-term retention.

### Two-way recall — https://voicecards.quest/methods/two-way-recall
If you only learned it forward, you only half learned it. Recognizing a translation and producing one are different skills. How to use swap mode and random direction to build associations that work both ways.

### The chapter-to-deck pipeline — https://voicecards.quest/methods/chapter-to-deck
Photograph the chapter, curate the cards, own the material. Photograph textbook pages or attach a chapter PDF, let AI extract the question–answer pairs, then curate the deck in your own Google Sheet. The curation is the first study pass.

### Weak-card triage — https://voicecards.quest/methods/weak-card-triage
Stop reviewing what you know. Drill what you miss. A routine for the second half of learning a deck: bookmark every miss, drill the bookmarks, put the weak cards first with the focus order, and re-triage weekly.

### The spoken rehearsal — https://voicecards.quest/methods/spoken-rehearsal
Interviews and oral exams are performances. Rehearse them as one. Write the questions you expect and fear, write your best answers, and drill them aloud with AI grading by meaning — a rehearsal routine for interviews, vivas, and presentations.

### Finish-date pacing — https://voicecards.quest/methods/finish-date-pacing
Work backward from the exam date to today's number. Set a per-deck speaking goal sized to your exam, then let the app's days-to-goal estimate tell you whether your pace lands in time — while there's still time to fix it.

### Automatization loop — https://voicecards.quest/methods/automatization-loop
Turn listening time into speaking reps: hear the prompt, say the answer in the gap, before the voice does. Hear a prompt in your language, say the target phrase aloud in the pause, then hear the answer. A hands-free audio flashcard drill for automatic speech.

## Study templates (ready-made decks at /templates)
Copyright-free, import-and-memorize decks, each living in a public Google Sheet and split for focused study. There are 230 decks. Full list as markdown: https://voicecards.quest/templates.md · as JSON: https://voicecards.quest/templates.json.
- Bible — Ready-made King James Version decks for every book of the Bible, built for memorizing scripture out loud. Pick a book, listen on a loop, then recite each verse from its reference. 67 decks, hub at https://voicecards.quest/templates/bible; e.g. https://voicecards.quest/templates/bible-verse-memorization-kjv, https://voicecards.quest/templates/memorize-genesis.
- Quran — A deck for every surah of the Quran, built for hifz by voice. Arabic recited aloud with an English rendering as a note, free to import and study on a loop. 114 decks, hub at https://voicecards.quest/templates/quran; e.g. https://voicecards.quest/templates/memorize-surah-al-fatihah, https://voicecards.quest/templates/memorize-surah-al-baqarah.
- U.S. citizenship — Decks built from the official USCIS 2025 civics questions, plus the 65/20 subset and the reading and writing vocabulary lists. Study out loud, the way the interview actually goes. 7 decks, hub at https://voicecards.quest/templates/civics; e.g. https://voicecards.quest/templates/civics-2025-all, https://voicecards.quest/templates/civics-2025-american-government.
- California CDL — The three written tests for a California Class A CDL, built from the official DL 650 handbook: general knowledge, air brakes and combination vehicles. Free voice flashcards, answered out loud. 3 decks, hub at https://voicecards.quest/templates/cdl; e.g. https://voicecards.quest/templates/cdl-general-knowledge, https://voicecards.quest/templates/cdl-air-brakes.
- Einbürgerungstest — Free voice flashcard decks for the German naturalisation test, built from the official BAMF question catalogue: the full federal set, four subject sections, and the state questions for all sixteen Länder. 6 decks, hub at https://voicecards.quest/templates/einbuergerungstest; e.g. https://voicecards.quest/templates/einbuergerungstest-alle-fragen, https://voicecards.quest/templates/einbuergerungstest-recht-grundrechte.
- Deutsch A1 — Free voice decks for beginner German: noun genders with plurals, verb forms with haben or sein, adjective opposites, and everyday exchanges. German on both sides, so the deck works whatever language your phone is in. 4 decks, hub at https://voicecards.quest/templates/deutsch-a1; e.g. https://voicecards.quest/templates/deutsch-a1-der-die-das, https://voicecards.quest/templates/deutsch-a1-verben.
- Spanish — Free Spanish voice flashcard decks: fifty everyday sentences, common verbs with their present and perfect forms, and everyday nouns with their article and plural. Built for saying the answer out loud, not reading it. 3 decks, hub at https://voicecards.quest/templates/spanish; e.g. https://voicecards.quest/templates/spanish-daily-expressions, https://voicecards.quest/templates/spanish-verbs-spoken.
- OPIc English — Free OPIc English speaking decks for Japanese and Korean speakers: starter phrases, past experiences, problem solving, comparisons and role play. Native-language prompts, English answers, built for speaking out loud. 10 decks, hub at https://voicecards.quest/templates/opic; e.g. https://voicecards.quest/templates/opic-english-speaking-phrases-ja, https://voicecards.quest/templates/opic-past-experience-phrases-ja.
- OPIc English Japanese — Free OPIc English speaking decks for Japanese speakers: starter phrases, past experiences, problem solving, comparisons and role play. Japanese prompts, English answers, built for speaking out loud. 5 decks, hub at https://voicecards.quest/templates/opic-ja; e.g. https://voicecards.quest/templates/opic-english-speaking-phrases-ja, https://voicecards.quest/templates/opic-past-experience-phrases-ja.
- OPIc English Korean — Free OPIc English speaking decks for Korean speakers: starter phrases, past experiences, problem solving, comparisons and role play. Korean prompts, English answers, built for speaking out loud. 5 decks, hub at https://voicecards.quest/templates/opic-ko; e.g. https://voicecards.quest/templates/opic-english-speaking-phrases-ko, https://voicecards.quest/templates/opic-past-experience-phrases-ko.
- English for Japanese Speakers — Free English speaking decks for Japanese speakers: everyday situations answered with whole sentences, and ten question forms answered without a pause. Japanese prompts, English answers, made for Listen and Speak modes. 2 decks, hub at https://voicecards.quest/templates/english-japanese; e.g. https://voicecards.quest/templates/daily-english-chunks-ja, https://voicecards.quest/templates/instant-response-english-phrases-ja.
- Korean for Japanese Speakers — Free Korean speaking decks for Japanese speakers: travel Korean, K-pop fan activity, daily life, social chat, and work or school phrases. Japanese prompts, Hangul answers, built for Listen and Speak modes. 5 decks, hub at https://voicecards.quest/templates/korean-japanese; e.g. https://voicecards.quest/templates/korean-travel-phrases-ja, https://voicecards.quest/templates/korean-kpop-fan-phrases-ja.
- Korean for English Speakers — Three free Korean speaking decks for English speakers: everyday life, travel and conversations with friends. English situation prompts, Hangul answers and 300 useful beginner sentences. 3 decks, hub at https://voicecards.quest/templates/korean-english; e.g. https://voicecards.quest/templates/korean-daily-life-en, https://voicecards.quest/templates/korean-travel-phrases-en.
- Ham Radio Technician — Study 397 text-based questions from the official 2026 to 2030 Ham Radio Technician pool. Six free voice flashcard decks for rules, operation, radio theory and safety. 6 decks, hub at https://voicecards.quest/templates/ham-radio-technician; e.g. https://voicecards.quest/templates/ham-radio-technician-fcc-rules-2026-2030, https://voicecards.quest/templates/ham-radio-technician-operating-practices-2026-2030.

## Supported TTS / STT languages
English, Arabic, Chinese (Simplified), Chinese (Traditional), Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Thai, Turkish, Vietnamese.
Total: 29 base languages. Regional variants (en-US/en-GB, es-ES/es-MX, pt-BR/pt-PT, zh-CN/zh-TW) are exposed in the in-app voice picker.

## Data model
Each card is one row in a Google Sheet. Column A is the question side; column B is the answer side. Additional columns are used by the app for per-card learning stats but the sheet stays human-editable. Sheets live in the user's own Google Drive — the app does not maintain a duplicate copy on a remote server. Learning statistics (attempts, accuracy, per-sheet goals, per-card metadata) live on Supabase, scoped to the signed-in user.

## Pricing model
Core features (importing a sheet, Speak mode, Listen mode with the device's built-in TTS, statistics, study reminders) are free. AI card generation and Google Cloud premium TTS voices use a per-request credit. Premium voice plays whenever the account has credits (cached audio replays without further charge) and degrades to the device's built-in TTS at a zero balance rather than blocking the session. New users get a starter grant of credits at signup. Refills are purchased in-app. No ads. A subscription tier is planned but not yet shipped.

## Comparisons
Use-case guides: https://voicecards.quest/audio-flashcards (hands-free audio flashcards), https://voicecards.quest/language-learning (speaking practice), https://voicecards.quest/exam-prep (exam & interview prep), https://voicecards.quest/memorization (general memorization). German landing: https://voicecards.quest/de.

See https://voicecards.quest/vs/anki and https://voicecards.quest/vs/quizlet for axis-by-axis comparisons. Short summaries:
- vs Anki: VoiceCards stores cards in Google Sheets (vs Anki's SQLite/AnkiWeb), defaults to voice-first study (vs Anki's typed self-grading), and adds AI card generation. Anki has a more mature SRS scheduler.
- vs Quizlet: VoiceCards is private-first (no marketplace) and voice-first, where Quizlet is a study-set marketplace with multiple typed/tapped modes and a separate AI tutor product.

## FAQ
### What is VoiceCards?
VoiceCards is a mobile flashcard app for memorization. Users put question-answer pairs into a Google Sheet, then study them on iOS or Android. The app reads cards aloud (TTS) and grades spoken answers (STT). It supports Speak mode for active recall and Listen mode for passive review, and can generate cards from a prompt, photos, or a PDF via AI.

### How is VoiceCards different from Anki?
Anki stores cards in its own database; VoiceCards stores them in the user's own Google Sheet, so editing on a laptop is just opening Google Sheets — no third-party desktop app, no sync conflicts. VoiceCards also defaults to a voice-first study loop (speak the answer, hear the card) rather than typed or tapped recall, which suits language learning and verbal recall better than text-heavy SRS.

### How is VoiceCards different from Quizlet?
Quizlet is study-set marketplace + multi-mode learning; VoiceCards is opinionated about one workflow (your deck, your cards, voice in/out) and adds AI card generation from prompts, photos, or PDFs. There is no marketplace and no social/share-set feature — content is private to the owner's Drive unless they share the deck themselves.

### Is it free?
Core study features are free: create or import up to three decks, use Speak mode, listen with the device voice, check statistics and goals, and set reminders. New accounts receive 100 starter credits. Credits pay for AI card generation, AI grading, and new premium-voice audio. Packs range from $0.99 for 100 credits to $99.99 for 12,000 credits, with prices adjusted by each store and region. A positive purchased balance lets you add decks beyond three. Packs from $9.99 also include 120 to 480 days of screen-off listening, which keeps working at zero credits during that period. There is no subscription. Cached premium audio is free to replay, and after any purchase it stays premium at zero credits. Otherwise VoiceCards uses the device voice.

### Which languages are supported?
VoiceCards supports 29 languages for TTS/STT, including English, Spanish, French, German, Italian, Portuguese, Russian, Arabic, Hindi, Chinese (Simplified and Traditional), Japanese, Korean, Dutch, Swedish, Norwegian, Danish, Finnish, Polish, Czech, Hungarian, Romanian, Greek, Hebrew, Turkish, Thai, Vietnamese, Indonesian, and Malay. The app UI itself is localized to 13 languages (English, Korean, Chinese, Japanese, German, Spanish, French, Portuguese, Russian, Polish, Italian, Vietnamese, and Ukrainian).

### Where is my data stored?
Cards stay in the user's own Google Drive — VoiceCards does not keep a duplicate copy on its server. Decks kept on the device only (see below) never reach Drive at all; they live in the app's own storage. Learning statistics (attempts, accuracy, per-deck goals) and per-card metadata live on Supabase, scoped to the signed-in user.

### Does it work offline?
Yes, for studying. Decks opened while online stay on the device for 30 days, so cards and previously synthesized audio keep working with no connection — including after restarting the app. Decks created offline are held on the device and uploaded to Drive by themselves once a connection returns. What does need a connection: AI card generation, premium voice synthesis for cards not heard before, and importing a new deck.

### Can I use VoiceCards without Google Drive?
Yes, in two ways. Before signing in at all (from app version 1.1.119), decks you make are held on the device and never touch Drive. After signing in, turning on "Keep decks on this device" in the profile (from 1.1.113) stops new decks from being uploaded — they stay in the app's storage until you back them up yourself, and can still be edited, renamed and deleted like any other deck. An account is still what credits and learning history attach to. The trade-off either way is that a device-only deck exists in one place: deleting the app or losing the phone loses it with them.

### Can questions and answers use different voices?
Yes. Each side of a card can have its own voice — even within the same language, so an English exam deck can ask in one voice and answer in another. Set it from the question/answer settings in the learning screen; a per-language default voice remains as the shared fallback.

### Does Listen mode keep playing in the background?
Yes. Listen mode keeps playing with the screen off or while you use other apps, and you can control it from the lock screen. It works while your account has credits. Packs from $9.99 also include 120 to 480 days of screen-off listening, which continues at zero credits during that period. Cached premium audio is free to replay. After any purchase, that saved audio also stays premium at zero credits when you listen in the foreground.

### What is Auto memorize mode?
A second play button in Listen mode, since app version 1.1.114. Press it and the deck learns with you: a brand-new card plays question and answer back to back, like a song chorus; as you hear a card again and again, a silence grows before the answer — room for your memory to get there first. Once you know a card well, the answer's voice steps back and quietly confirms, and after a few days away it steps forward again, exactly as much as forgetting requires. From 1.1.119 it no longer starts everything from zero: cards you have already answered correctly in speaking practice skip the introduction phase, and an Auto-Memorize Level in the card settings menu sets a starting point for a whole deck — or resets its progress. No grading, no taps mid-listen. Available with credits or an active listening period, like background listening.

### Who is it for?
Language learners, students prepping for exams, professionals studying certifications (e.g. medical, civil service, licensing exams), and anyone who memorizes question-answer pairs as part of their routine.

### Do I need a Google account to use VoiceCards?
Not to start. From app version 1.1.119 you can type cards, copy a ready-made deck, or import a file and study it immediately — the deck saves to the device and no sign-in is asked for. Signing in with Google is what turns that into a backup: every deck already on the device is copied into your own Drive, and the account is also what credits and learning history attach to. So no account to try it, an account to keep it. The app requests Drive access scoped to its own folder of decks; it does not see other files in the Drive.

### How should I format my Google Sheet?
Column A is the question side, column B is the answer side. Each row is one card. Optional columns are used by the app for per-card learning stats. Any extra columns are ignored, so the same Google Sheet stays human-editable in Google Sheets.

### Can I import a deck from Anki or Quizlet?
There is no one-click importer, but you can export an Anki or Quizlet deck to CSV, paste the question/answer columns into a new Google Sheet, and VoiceCards will pick it up like any other deck. The AI generator also accepts photos of a textbook page or a PDF, which often beats copy-pasting from a third-party export.

### Are there ready-made decks I can use?
Yes, around 200 of them, free and copyright-free: a deck for every book of the Bible (KJV) and every surah of the Quran, the official U.S. naturalization civics questions, the three California CDL knowledge tests, the German naturalisation test (Einbürgerungstest), and beginner German vocabulary. Copying one puts your own Sheet in your Drive, so you can add or cut cards without affecting anyone else. Browse them at voicecards.quest/templates.

### Can VoiceCards create flashcards from a PDF?
Yes. In AI card generation, attach a PDF (one file, up to 40 MB — enough for a whole textbook chapter or a scanned manual) — lecture notes, a manual chapter, a vocabulary list — and the AI extracts question-answer pairs from it, preserving existing pairings like term-definition tables. Scanned PDFs work too; the model reads them like images. You choose how many cards to generate, and pricing is the same per-card credit rate as text or photo input.

### How accurate is the speech recognition?
VoiceCards uses the device's built-in speech-to-text — the same engine your phone uses for dictation. Accuracy depends on the language model your OS ships and the speaker's accent. For partial matches, the app accepts a configurable similarity threshold instead of requiring an exact transcript.

### What TTS voices are available?
Two tiers: the device's built-in TTS (free, included with iOS/Android) and Google Cloud premium voices (per-credit, higher fidelity). Creating premium audio costs credits in proportion to length; replaying it never does, because audio is cached per text-and-voice combo. Once an account has bought any pack, its cached premium audio keeps playing at full quality even at zero credits; otherwise the app continues in the device voice, so a session never stops mid-deck.

### How much does AI card generation cost?
AI generation is priced in credits, scaled to the number of cards generated. Photo input (up to 10 images per request) and PDF input (one file, up to 40 MB) cost the same as text input. From app version 1.1.119 the generator first writes three real cards from your prompt, so you can see what the deck will actually look like before choosing how many to make. New users get a starter grant of credits so the first AI deck is essentially free; refills are purchased in-app.

### Can I share my decks with other people?
Yes — because cards live in a Google Sheet, sharing the deck with another Google account gives them the same cards. The app also generates a short URL (e.g. vcrd.quest/swift-fox-7) for jumping from phone to desktop without copy-pasting the long Sheets URL.

### Can I edit cards on my phone, or only in Google Sheets?
Both. Cards can be added or edited from the app, and changes are written back to the underlying Google Sheet so the two stay in sync. Bulk edits are usually faster in Google Sheets on a laptop.

### Does VoiceCards use spaced repetition?
VoiceCards uses a "smart shuffle" that biases toward less-practiced and recently-missed cards, but it does not yet implement a full SRS scheduler like SM-2 or FSRS. A formal SRS mode is on the roadmap.

### Is there an iPad, Android tablet, or web version?
VoiceCards runs on iOS and Android phones today. Tablet layouts are usable but not specifically optimized. There is no native web app; editing on desktop is done by opening the underlying Google Sheet.

### Can I delete my account and learning history?
Yes. Account deletion in the app removes the Supabase-side user record and all learning statistics. The Google Sheet itself stays in the user's Drive — it was never duplicated server-side — so the user retains their cards if they want them.

### Are there ads in VoiceCards?
No. VoiceCards has no ads and no subscription. The monetization model is credit packs: credits pay for AI card generation, AI grading, and premium TTS voices, and the larger packs also include a period of background listening.

### What permissions does the app need?
Microphone access (for Speak mode), Google Drive read/write scoped to the app's own folder (for cards), and notifications (optional, only if study reminders are turned on). No location, no contacts, no other Drive folders.

### How do study reminders and goals work?
Pick a time of day and the app sends a local notification. For motivation, set a per-deck speaking goal — "speak it N times," counted whether you get it right or wrong — and the app fills a progress bar and estimates when you'll reach it at your current pace. There are no streaks to break. Stats are in the Analytics tab — daily and weekly attempt counts, cumulative cards practiced, and accuracy.

### How does the short-URL feature work?
When viewing a deck on mobile, the app can mint a memorable short link (three words + digit, like vcrd.quest/swift-fox-7) that redirects to the underlying Google Sheet. Type it on a laptop browser and the Google Sheet opens — useful for bulk editing without copy-pasting a 50-character URL.

## Privacy and data
See https://voicecards.quest/privacy for the full policy. Headline: cards stay in the user's Drive; in-app analytics are tied to the signed-in user; account deletion in-app removes the Supabase user record and learning history (but does not touch the Google Sheet itself, which the user continues to own).