Know Notes vs Otteretto
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Know Notes
Develop your musical ear by learning to identify notes and chords by sound. This gamified app makes practicing fun and competitive, allowing you to progress from basic notes to sharps and flats.
- Ear training
- Note recognition
- Chord recognition
- Gamified learning
- Progressive difficulty
- Natural notes, sharps, and flats
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Train Ears, Master Music. Learn to recognize musical notes and chords by their unique sound. Gamified to make learning fun and competitive. Start small, then work your way up to learn every natural note and their sharp/flat.
Otteretto
A unique puzzle game where players create palindromes using letters and otters. It offers multiple endlessly replayable game modes, including daily challenges and competitive leaderboards.
- Unique palindrome puzzle mechanics
- Five endlessly replayable game modes
- Daily global competition
- Logical reasoning puzzles
- Competitive cross-platform leaderboards
- No ads or microtransactions
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Otteretto is a puzzle game about palindromes (and otters). NEW PUZZLE CONCEPT This isn't another match-3 game; it's a whole new idea to wrap your head around! How long of a palindrome can you make? 5 ENDLESSLY-REPLAYABLE GAME MODES Classic: Try to reach each level's score goal in the addictive original mode. The Daily Stack: Join a global competition every day! How many points can you get from the same set of squares as everyone else? Puzzle: Use logical reasoning to figure out how to turn a set of squares into a single, massive palindrome! Containment: With more squares being added every move, how long can you keep the container from overflowing? Walls: In this challenging variant, you'll need to get creative to work around each level's impassable walls. COMPETE WITH THE WORLD See how you stack up with online, cross-platform leaderboards! NO ADS, NO MICROTRANSACTIONS Play Classic mode and the Daily Stack for free with no limits! If you like those, you can purchase the full game to permanently unlock the rest.
Screenshots
Verdict
The clearest difference is update cadence: Know Notes at fortnightly against Otteretto's every 9 months. Know Notes also leads on ratings volume (31 vs 8). Otteretto's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.0). On price, rating, review sentiment and ads 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. Know Notes sells 6 one-off in-app purchases and Otteretto sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for Know Notes against 5.0 for Otteretto. Both are backed by a comparable volume of ratings — 31 and 8 respectively. Written reviews are what separate them: 96% of Know Notes's written reviews are positive against 100% of Otteretto's.
Know Notes ships an update fortnightly, Otteretto every 9 months. Both last shipped on November 3, 2026.
| Parameter | Know Notes | Otteretto |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (31 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 95.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 31 — better | 8 |
| Update frequency | Fortnightly — better | Every 9 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 107 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | wylan neely | Christopher Klimowski |
Customer experience
Know Notes
Otteretto
In-app purchases
Know Notes
- Violin Notes$0.99
- Electronic Keyboard Notes$0.99
- Grand Piano Notes$0.99
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- Unlock Violin Instrument$2.99
- Acoustic Guitar (Major Chords)$2.99
- Unlock Acoustic Guitar$3.99
Otteretto
- Full Game Upgrade$2.99
