Comparison

Negentropy vs Otteretto

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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?

Highlights
  • Room-based puzzles
  • Letter rearrangement
  • Word formation
  • Progressive challenges
  • Escape entropy
Features
Read full description

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?

About

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.

Highlights
  • Unique palindrome puzzle mechanics
  • Five endlessly replayable game modes
  • Daily global competition
  • Logical reasoning puzzles
  • Competitive cross-platform leaderboards
  • No ads or microtransactions
Features
Read full description

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

Negentropy4 screens
Otteretto4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Negentropy versus Otteretto: the parameters behind the verdict, then further details
ParameterNegentropyOtteretto
PriceFreeFree
Rating5.0 (2 ratings)5.0 (8 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings28 — better
Update frequencyEvery 21 monthsEvery 9 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size346 MB14 MB
Age rating4+4+
DeveloperSide Step Studios, LLCChristopher Klimowski

Customer experience

Negentropy

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Otteretto

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

7 purchases

Negentropy

One-time7
  • Puzzle Set 1$0.99
  • Puzzle Set 2$0.99
  • Puzzle Set 3$0.99
Show 4 more
  • Puzzle Set 4$0.99
  • Puzzle Set 5$0.99
  • Puzzle Set 6$0.99
  • Puzzle Set 7$0.99
1 purchases

Otteretto

One-time1
  • Full Game Upgrade$2.99

Questions

Is Negentropy free?
Negentropy is free to download, with in-app purchases available.
Is Otteretto free?
Otteretto is free to download, with in-app purchases available.
Which has better reviews, Negentropy or Otteretto?
Negentropy and Otteretto are both rated 5.0 out of 5 on the App Store, from 2 and 8 ratings respectively.
Do Negentropy or Otteretto have ads?
Neither Negentropy nor Otteretto shows ads.
Which is updated more often, Negentropy or Otteretto?
Negentropy ships an update every 21 months, and Otteretto every 9 months. Most recently, Negentropy was updated on October 3, 2026 and Otteretto on October 12, 2026.

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