On vs Boolearn
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
On
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On-Key transcends being merely a virtual piano app - it's an inclusive musical universe! With its unique approach, it provides a welcoming environment for all aspiring musicians. Carefully chosen colors ensure visual comfort, and the clear, readable interface caters to a wide range of users. Dive into interactive lessons, refine your skills, and explore a vast musical repertoire. Whether you're a curious beginner or a seasoned enthusiast, On-Key adapts to your pace, offering support and encouragement with every note. Discover the magic of barrier-free music, join a vibrant community, and embark on your musical journey today. Download On-Key and let the music guide your inspiration, where everyone has a place to play and express themselves. Developed by Julia Gusmรฃo, Luana Thomas, Matheus Venturini, Nathan Schostack and Pedro Muller.
Boolearn
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Boolearn is an interactive educational platform designed to help you learn the world of digital electronics in a practical, accessible, and fun way. Developed by Gustavo Diefenbach, the game invites you to discover the foundations of the technology we use every day. Chapter I: Decimal and Binary Numbers Understand how decimal numbers work and discover the binary system, the core of digital computation. Chapter II: Logic Gates and Logic Levels The first chapter introduces the basics of digital logic, teaching how logic gates work and how logic levels (0 and 1) control digital systems. Step by step, youโll learn to play with logic gates like AND, OR, NOT, and more โ all through intuitive gameplay and hands-on challenges.
Screenshots
Verdict
On and Boolearn are too close to call on the numbers: across 6 compared parameters โ price, update cadence, ads and in-app purchases among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 5 days. Both last shipped on September 9, 2026.
| Parameter | On | Boolearn |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | Every 5 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details โ not scored | ||
| Size | 408 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Luana Thomas | Gustavo Diefenbach |
In-app purchases
On
No in-app purchases
Boolearn
No in-app purchases









