AlgoApp vs StudyDeck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AlgoApp
Create and study flashcards for languages or school with AI-powered tools and advanced spaced repetition. Supports offline use, cross-device syncing, and PDF conversion to flashcards. Millions of users have studied billions of cards.
- AI-powered PDF to flashcard conversion
- Automatic translation and text-to-speech
- Furigana and Pinyin annotations
- Offline study mode
- Cross-device syncing
- FSRS spaced repetition algorithm
- Anki deck import
Read full descriptionHide full description
Learn languages, or study for school and tests, with the most powerful and user-friendly flashcard app. Millions of language-learners and students have studied over 2 billion flashcards with AlgoApp. Ranked #1 Education app in multiple countries world-wide. Featured in the New York Times. Designed by learning experts, including a published neuroscientist. Whether you're learning a language to live somewhere new or just for fun, need to get through med school, or just want to crush your tests, AlgoApp has already done it for over 5 million people. Why AlgoApp? FOR LANGUAGE LEARNERS • Automatic translation. Make vocab flashcards faster by typing words in the language you know, then AlgoApp translates to the language you're learning (or vice versa). Supports 120 languages including Japanese, Chinese, Korean, English, German, French, and more... • Speaks flashcards to you, in dozens of languages (automatic text-to-speech). Supports 39 languages including Japanese, Chinese, Korean, English, German, French, and more... • Automatically generates furigana annotations for kanji, or pinyin annotations for hanzi. FOR STUDENTS • Converts PDFs directly into flashcards using AI. Upload lecture slides and have a full deck of flashcards ready in seconds. • Prompt AI to make flashcards for you based on text and pictures. Turns handwritten notes and diagrams into flash cards for you. • Format your cards with colored text, bulleted lists, underlines, and more (no CSS needed). • Works offline, so you can study and make cards even when you don't have signal. • Syncs automatically with desktop, web app, and your other phones and tablets. So you can make cards on a computer with a full keyboard, then study on your phone. • Natively supports FSRS, the most-advanced spaced repetition algorithm. • Imports Anki decks (.apkg), AlgoApp (.xml) files, or spreadsheets (.csv). • Supports folders and subfolders, to keep your classes organized. • Notifications tell you when it's time to study (opt-in). • Share decks and study with your friends using Study Groups. • No ads. For the most-dedicated students, try AlgoApp Unlimited free for 7 days. Study as much as you want on all your devices. If you want to upgrade to AlgoApp Unlimited, you can either purchase "Unlimited: 1-Year" which is a 1-year auto-renewing subscription, or "Unlimited: Lifetime" which is a one-time purchase. • Unlimited grants you access to unlimited cross-platform multi-device sync, and more.. • If you choose "Unlimited: 1-Year", the subscription will automatically renew, unless auto-renew is turned off at least 24-hours before the end of the current period. Payment will be charged to your Apple Account within 24-hours before the end of the current period (renewal or trial period). • You can manage your subscription and disable auto-renewal by going to your Account Settings after purchase. Terms of Service: https://www.algoapp.ai/terms.html Privacy Policy: https://www.algoapp.ai/privacy.html
StudyDeck
Transform notes, PDFs, or photos into AI-powered flashcards instantly. Offers seven study modes, including spaced repetition and practice tests, to help you learn smarter and ace exams. On-device AI ensures your study materials remain private.
- AI-powered flashcard generation
- Import notes, PDFs, and photos
- Seven distinct study modes
- Spaced repetition (FSRS algorithm)
- On-device AI for privacy
- Progress tracking and analytics
- Share decks with classmates
Read full descriptionHide full description
Turn any notes, PDFs, or photos into AI-powered flashcards in seconds. StudyDeck uses artificial intelligence to generate study cards automatically, so you spend less time creating and more time learning. SMART FLASHCARD CREATION - Paste text, import a PDF, or snap a photo - AI does the rest - Camera OCR scans handwritten or printed notes instantly - AI generates front/back cards, multiple choice questions, and true/false statements - Edit, customize, and organize cards into decks 7 STUDY MODES - Flashcards - classic swipe-to-study with flip animations - Multiple Choice - AI-generated answer options test real understanding - True/False - quick-fire statements to reinforce key facts - Written Response - type your answer and get AI-evaluated feedback - Audio Quiz - speak your answers and study hands-free on iPhone - Spaced Repetition - the FSRS algorithm schedules reviews at the optimal time - Practice Tests - timed mixed-format tests to simulate the real thing LEARN SMARTER WITH SPACED REPETITION StudyDeck uses FSRS v5, the most accurate spaced repetition algorithm available. It tracks what you know and what you don't, scheduling reviews right before you'd forget. No more wasting time on cards you've already mastered. AI THAT WORKS ON YOUR DEVICE StudyDeck uses Apple Intelligence for fast, private AI processing right on your iPhone. AI generation and speech recognition run on-device where supported, so your study materials stay private. BUILT FOR STUDENTS - Track your study progress with detailed analytics - See accuracy, mastered cards, and study streaks - Share decks with classmates - Dark mode and haptic feedback throughout - No ads FREE TO START Study with all 7 modes for free - up to 3 decks and 100 flashcards. Free accounts also include limited AI generation and import credits each month. Upgrade to Premium for unlimited access to everything. StudyDeck Premium: - Annual subscription with 7-day free trial - Lifetime access - one-time purchase - Unlimited decks and flashcards - Unlimited AI card generation - Unlimited PDF and photo imports - Unlimited practice tests and study guides - Free version: 3 decks, 100 flashcards, 5 AI generations, 5 PDF imports, 5 photo imports, 3 practice tests, and 3 study guides per month Privacy: StudyDeck processes everything on your device. On-device AI means your notes stay private. See our privacy policy for details. Privacy Policy: https://studydeck.net/privacy.html Terms of Use: https://studydeck.net/terms.html Questions? Visit our support page at https://studydeck.net/support.html
Screenshots
Verdict
The clearest difference is review sentiment: StudyDeck at 100% against AlgoApp's 50%. AlgoApp's advantage is update cadence (every 4 days vs every 2 weeks) and iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. AlgoApp sells 4 in-app purchases, starting at $9.99 per month and StudyDeck sells 2 in-app purchases, starting at $12.99 per year. Whichever you choose, the download price is not the number that matters.
AlgoApp ships an update every 4 days, StudyDeck every 2 weeks. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.
| Parameter | AlgoApp | StudyDeck |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (20K ratings) — better | — |
| Positive reviews | 49.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 20K — better | — |
| Update frequency | Every 4 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 51 MB | 13 MB |
| Age rating | 12+ | 4+ |
| Developer | AlgoApp Inc | Frederic Bacro |
Customer experience
AlgoApp
StudyDeck
Bugs and requests
AlgoApp
Reported bugs
5 issues- Cards disappearing from decks
- Inability to log in or sync across devices
- Formatting issues when copying/pasting text
- Inconsistent behavior when editing cards
- Frequent app crashes and freezes
Requested features
6 requests- Ability to edit/customize downloaded decks
- Option to review cards in creation order
- Customizable daily study limits
- Global search across all decks
- Markdown support and rich text formatting
Show 1 moreShow fewer
- Improved folder/deck organization tools
StudyDeck
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AlgoApp
- Unlimited: 1-Month$9.991 Month
- AnkiApp Unlimited$24.991 Year
- Unlimited: 1-Year$29.991 Year
- Unlimited: Lifetime$149.99
StudyDeck
- StudyDeck Premium Annual7 Days trial$12.991 Year
- Lifetime Pass$39.99









