Comparison

Deck Lens vs Rewise

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Deck Lens

Features
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Study smarter, not harder. Deck Lens is a clean, focused flashcard app built for learners who love Anki but want a more modern experience on their phone. Import your existing Anki decks, study with proven spaced repetition, and watch your progress grow โ€” all without the clutter. Import Your Anki Decks Instantly Already have .apkg files? Just open them in Deck Lens. Your cards, media, and deck structure come along for the ride. Switching from Anki has never been easier. Spaced Repetition That Works Deck Lens uses the SM-2 algorithm โ€” the same proven system behind Anki โ€” to schedule your reviews at the perfect time. Rate each card as Again, Hard, Good, or Easy, and the app handles the rest. You'll see exactly when each card comes back before you tap. A Study Experience You'll Actually Enjoy Flip through cards with smooth animations, track your session progress, and get a summary when you're done. Set daily review limits so you never feel overwhelmed. Swipe Mode Prefer gestures? Swipe through your cards for a fast, tactile study flow. Know Where You Stand Check your stats anytime: review heatmap, retention rate, streak counter, and cards broken down by status (new, learning, review). See what's working and where to focus. Create and Edit Your Own Decks Build flashcards from scratch or tweak imported ones. Deck Lens supports rich card content so your notes look the way you want. Export and Share Export any deck back to .apkg format and share it with friends, classmates, or your other devices. Your data is always yours. Available in English, German, and Turkish. Whether you're learning a new language, studying for exams, or memorizing anything else โ€” Deck Lens gives you the tools to make it stick.

About

Rewise

Features
Read full description

Remember it right before you forget it. Rewise turns the most current spaced-repetition science into the fastest way to study on iPhone. Medicine, exams, languages. It ends "there is too much to memorise" with actual science. Why do you forget it after all that work? Because the interval between reviews does not match your forgetting curve. The FSRS scheduler predicts the moment you are about to forget and asks you then. Set your target retention anywhere from 70% to 97%. Fewer reviews, deeper retention. How much longer is today going to take? Every answer button tells you when the card comes back โ€” tomorrow, in 3 days, in 10 days โ€” so you can see the end of it. When today runs out, "Study all now" adds more without disturbing the schedule. Isn't making the cards the part that kills the habit? Point it at a photo, a PDF or pasted text and it drafts the questions and answers for you, entirely on the device. Flashcard packages (.apkg / .colpkg, exported with legacy support enabled) and CSV files import directly. Everything is processed on the device and we run no servers of our own. Your cards leave the phone only if you turn on iCloud sync yourself. Is there only one way to memorise something? Basic cards, cloze deletion, image occlusion that lifts one mask at a time, and multiple choice. Red sheet mode (free) writes the answer in red under a see-through red sheet; slide it down to check yourself. Read-aloud uses the voices already on your device, so it speaks more than 30 languages. Do I need a computer? No. Building cards, masking images, importing files โ€” all of it finishes on the device. Turn on iCloud sync (Pro) and your iPhone and iPad stay joined, with no sync button to press. But can you actually keep it up? Study reminders, and widgets for the Home and Lock Screen. Six months of heatmap, a forecast of the workload ahead, and your real measured retention: progress you can actually see. The haptics and sounds feel good, and they can be switched off. Won't it hurt my eyes at night? There is a paper-textured screen and a warm dark mode for late sessions. Pick your app icon too. What does it cost? Free, for up to 4 decks and 300 cards. The spaced repetition itself is never rationed. Rewise Pro (subscription) lifts the card limit and opens all-device sync, image occlusion, multiple-choice, typed-answer and audio cards, read-aloud, unlimited drafted cards, six-month statistics, alternate app icons, imports, and full JSON and printable PDF export. Exporting your cards as CSV is free on every plan. Yearly is the best value and comes with a 7-day free trial. A lifetime unlock is also available for anyone who prefers not to subscribe. What you learn today โ€” for exam day, and long after. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://revot.jp/apps/rewise/privacy.html

Screenshots

Deck Lens4 screens
Rewise4 screens

Verdict

The call

The clearest difference is in-app purchases: Deck Lens at none against Rewise's 4. Deck Lens also leads on update cadence (every 10 days vs every 4 weeks) and iOS requirement (15.1 vs 17.0). Rewise's advantage is ads (none vs shown). On price and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Rewise sells 4 in-app purchases, starting at $1.99 per 7 days. Deck Lens asks for nothing beyond the download.

UpkeepUpdate frequency

Deck Lens ships an update every 10 days, Rewise every 4 weeks. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.

Scorecard4 real differences ยท 2 level
Deck Lens versus Rewise: the parameters behind the verdict, then further details
ParameterDeck LensRewise
PriceFreeFree
Update frequencyEvery 10 days โ€” betterEvery 4 weeks
AdsYesNo โ€” better
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.1 โ€” better17.0
Further details โ€” not scored
Size43 MB8 MB
Age rating12+4+
DeveloperKadir Caner ErgunREVOT, K.K.

In-app purchases

None

Deck Lens

No in-app purchases

4 purchases

Rewise

Subscriptions3
  • Rewise Pro Weekly$1.997 Days
  • Rewise Pro Monthly$5.991 Month
  • Rewise Pro Yearly7 Days trial$29.991 Year
One-time1
  • Rewise Pro Lifetime$69.99

Questions

Is Deck Lens free?
Deck Lens is free to download, with no in-app purchases.
Is Rewise free?
Rewise is free to download, with in-app purchases available.
Do Deck Lens or Rewise have ads?
Deck Lens shows ads; Rewise does not.
Which is updated more often, Deck Lens or Rewise?
Deck Lens ships an update every 10 days, and Rewise every 4 weeks. Most recently, Deck Lens was updated on October 25, 2026 and Rewise on October 20, 2026.

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