Flash Cards vs Kartei
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flash Cards
Master any subject with science-based flashcards that adapt to your learning style. Utilize spaced repetition, the Leitner system, and confidence-based ratings to accelerate memorization and track your progress with detailed statistics. Create rich cards with text and images, and share decks with friends.
- Spaced Repetition
- Leitner System
- Confidence-Based Learning
- Progress Tracking
- Rich Card Creation
- Deck Sharing
- Offline Study
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Master Any Subject with Science-Based Flashcards Flashcards Master transforms your study sessions with intelligent, research-proven methods designed to maximize retention and accelerate learning. Whether you're preparing for exams, learning a new language, or mastering professional skills, our app adapts to your learning style for optimal results. SMART STUDY METHODS • Spaced Repetition - The gold standard of memorization with optimal interval timing • Leitner System - Organizes cards by difficulty for focused practice • Confidence-Based - Rate your knowledge to focus on weaker areas • Active 2-3-5-7 - Fixed intervals proven for rapid memorization • Interleaved Practice - Enhances problem-solving and flexible thinking • Simple Review - Perfect for quick reviews and last-minute prep TRACK YOUR PROGRESS Monitor your learning journey with detailed statistics and insights. See your accuracy rates, study streaks, and mastery levels across all your decks. RICH CARD CREATION Create engaging flashcards with: • Text and images • Multiple card types • Custom study methods per deck • Import/export capabilities • Deck sharing with friends SEAMLESS EXPERIENCE • Beautiful, intuitive interface • Unlimited decks and cards (Premium) • Multi-language support • iCloud sync across devices • Offline study capability PREMIUM FEATURES • Unlimited cards per deck • Advanced statistics • Custom study scheduling • Priority support Built by educators and backed by research, Flashcards Master makes learning more effective, efficient, and enjoyable. Download now and discover the power of science-based learning! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Kartei
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Turn good questions into knowledge that stays. Kartei combines your own flashcards with spaced repetition in a focused, native study space for iPhone, iPad and Mac. KNOW WHAT TO STUDY NEXT See which cards are due today. Reveal the answer, rate your recall honestly and let FSRS-6 calculate the next review. Choose your target retention and daily time budget. MAKE CARDS THAT FIT YOUR SUBJECT Create question-and-answer cards, cloze deletions and image occlusions. Add explanations, sources and tags. Organize your knowledge into decks, then find cards with search and filters. GIVE EQUATIONS THEIR SPACE Write mathematical and chemical formulas in TeX. Equations render offline, making Kartei a useful home for physics, calculus, biochemistry and other subjects that need more than plain text. THINK IN YOUR OWN HANDWRITING Write on the front and back of cards with your finger on iPad and iPhone, or with Apple Pencil on iPad. Your strokes stay editable. View and study handwritten cards on Mac. KEEP THE EXPLANATION WITH THE QUESTION Add images, voice recordings, audio, video and PDF attachments to your cards. Bring the material that helps you understand and remember. STUDY LOCALLY. TAKE YOUR COLLECTION WITH YOU. Your collection is stored on your device. Export cards, media and review history together, then import them on another device. Bring existing text cards into Kartei through CSV or TSV. SEE YOUR ACTUAL PROGRESS Track card reviews and the progress of your decks. Choose light or dark mode, and use keyboard shortcuts on Mac to keep your workflow moving. Start with a sample collection covering physics, biochemistry and calculus. Then build your own flashcards for school, university, vocabulary or professional learning. KARTEI PRO Unlimited cards and decks, spaced repetition, formulas, images and export are free. Kartei Pro adds handwriting and sketches, audio and dictation, video and PDF. Choose a monthly or yearly subscription or a one-time purchase. Price and duration are shown before purchase. Subscriptions renew automatically unless canceled in your Apple subscriptions. A free trial is offered when eligible. Purchases can be restored in the app. Privacy Policy: https://dimar2811.github.io/biohacker-support/kartei/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Kartei at every 2 days against Flash Cards's every 2 months. Kartei also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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. Flash Cards sells 4 in-app purchases, starting at $0.99 per month and Kartei sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Flash Cards ships an update every 2 months, Kartei every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Flash Cards | Kartei |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 18.0 | 18.0 |
| Further details — not scored | ||
| Size | 18 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeff Cedilla | Marc Hammerschmidt |
In-app purchases
Flash Cards
- Monthly$0.991 Month
- Yearly$6.991 Year
- Lifetime$9.99
- Lifetime Discount$9.99
Kartei
- Kartei Pro Monthly$3.991 Month
- Kartei Pro Yearly7 Days trial$17.991 Year
- Kartei Pro Lifetime$44.99









