Negentropy vs Otteretto
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Negentropy
Explore an old house by solving word puzzles in each room. Rearrange letters to escape entropy and advance to the next challenge. Can you master the wordplay to progress?
- Room-based puzzles
- Letter rearrangement
- Word formation
- Progressive challenges
- Escape entropy
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Step inside and wander the halls of a house of old. Play through a set of puzzles in each room to move ahead. Take the letters out of a state of entropy, strategically putting them together to make four different words! Can you make your way to the next room?
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: Otteretto at every 9 months against Negentropy's every 21 months. Otteretto also leads on ratings volume (8 vs 2). 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. Negentropy sells 7 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 — 5.0 for Negentropy against 5.0 for Otteretto. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Negentropy ships an update every 21 months, Otteretto every 9 months. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.
| Parameter | Negentropy | Otteretto |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (8 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 8 — better |
| Update frequency | Every 21 months | Every 9 months — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 346 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Side Step Studios, LLC | Christopher Klimowski |
Customer experience
Negentropy
Otteretto
In-app purchases
Negentropy
- Puzzle Set 1$0.99
- Puzzle Set 2$0.99
- Puzzle Set 3$0.99
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- Puzzle Set 4$0.99
- Puzzle Set 5$0.99
- Puzzle Set 6$0.99
- Puzzle Set 7$0.99
Otteretto
- Full Game Upgrade$2.99









