Algo vs OnLeitner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Algo
Engage with programming concepts through interactive puzzles. Control an arrow with commands based on real coding logic to solve increasingly complex challenges. Suitable for both beginners and experienced coders.
- Solve programming puzzles
- Control arrow with commands
- Learn coding logic
- Progressive difficulty
- Hints and tips provided
- Suitable for all skill levels
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Algorithmo is a captivating journey into the world of programming and algorithms. In this game, you’ll find yourself in a universe where complex puzzles are waiting to be solved. Your task is to control a little arrow by giving it commands. These commands are based on real programming concepts, making Algorithmo not just a game, but a fun and interactive way to learn and improve your coding skills. Each level presents a new challenge, a new puzzle that needs to be solved using a specific set of commands. As you progress, the puzzles become more complex, requiring more advanced commands and a deeper understanding of programming logic. But don’t worry, Algorithmo is designed for both beginners and experienced programmers. The game provides hints and tips along the way, helping you to understand the logic behind each solution. So, are you ready to dive into the world of Algorithmo? Your adventure awaits! A paid subscription is required to access and play Algorithmo. Subscription options and pricing are displayed in the app before purchase. Privacy Policy: https://algorithmo.tilda.ws/privacy_policy Terms of Service: https://algorithmo.tilda.ws/terms
OnLeitner
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Memorize anything with the Leitner system, the spaced repetition method students use to remember more while studying less. OnLeitner is free, with no ads and no limits. Create as many boxes and cards as you need. HOW IT WORKS Create a box for each subject or topic and add question-and-answer cards. Every card moves through 5 levels: get it right and it moves up and comes back later; get it wrong and it starts over. Your time goes to what you actually find hard. ONLY WHAT'S DUE TODAY Each study session shows only the cards you need to review today, most overdue first. When you're all caught up, OnLeitner tells you when your next review is, and you can always review everything anyway. WHO IT'S FOR • High school and university students preparing for exams • Anyone studying for certifications or civil service exams • Language learners building vocabulary • Anyone who wants to remember concepts, dates, formulas or definitions TIP: CREATE YOUR CARDS WITH AI Have your notes in a PDF? Export a sample box as JSON, give it to your favorite AI along with your notes, and ask it to write the cards in the same format. Import them into OnLeitner and start studying in seconds. FEATURES • Leitner method with 5 spaced repetition levels • Sessions with only the cards due today • Mastered cards marked with a star • Automatic iCloud sync across your devices • Import and export boxes as JSON • Export any box to PDF to print it • Boxes with custom colors • Native Liquid Glass design for iPhone and iPad • VoiceOver and Dynamic Type support • Available in English and Spanish YOUR PRIVACY No accounts, no ads, no tracking. Your cards live on your device and in your iCloud, nowhere else.
Screenshots
Verdict
The clearest difference is update cadence: OnLeitner at every 3 weeks against Algo's every 15 months. Algo's advantage is iOS requirement (16.0 vs 27.0). On price, ads, in-app purchases and device support 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. Algo sells 3 in-app purchases, starting at $4.99 per month and OnLeitner sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Algo ships an update every 15 months, OnLeitner every 3 weeks. The most recent releases landed on October 11, 2026 and October 31, 2026 respectively.
| Parameter | Algo | OnLeitner |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 15 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 27.0 |
| Further details — not scored | ||
| Size | 138 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksei Liutykh | Ruben Gonzalez |
In-app purchases
Algo
- Patron Membership$4.991 Month
- Patron Membership$7.992 Months
- Patron Membership$8.996 Months
OnLeitner
- OnLeitner Premium$0.99









