Comparison

simian.interface++ vs Timeless Sudoku

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

Head to head
About

simian.interface++

An abstract puzzle game that challenges players with pattern recognition and intuition. It features a unique soundtrack, an original version of the game, and a new infinite mode with procedurally generated content for endless replayability.

Highlights
  • Abstract puzzle experience
  • Pattern recognition challenges
  • Intuitive gameplay
  • Original game included
  • Infinite_loop mode
  • Procedurally generated levels
Features
Read full description

simian.interface++, the fully featured update to the Flash game simian.interface, is an abstract puzzle experience for simian participants of all ages and abilities. There are no explicit rules, no instructions, and very simple controls. Inspired by tabletop puzzles, modern art, and cognitive psychology experiments, simian.interface++ presents challenges that must be solved using pattern recognition, intuition, and experimentation. features: - an incredible soundtrack composed by chiptune artist Note! - the original simian.interface - the new 'infinite_loop' mode, with procedurally generated levels, and randomized music and story content! infinite replay value! *This is essentially the same version of the game that was published on iOS by Chillingo from 2014-2017. However, it has been updated for modern devices, and is now self-published so we can ensure that it stays functional and available. Apologies to anyone who purchased the old version.

About

Timeless Sudoku

A classic number puzzle game updated for modern players. It offers endless brain-teasing fun with intuitive controls and clean visuals. Perfect for quick sessions or deep focus.

Highlights
  • Classic number puzzle gameplay
  • Intuitive controls
  • Clean visuals
  • Suitable for all skill levels
  • Endless brain-teasing fun
Features
Read full description

– the classic number puzzle game, reimagined for modern players. Whether you're a seasoned pro or new to the game, Sudoku offers endless brain-teasing fun at your fingertips. How to Play: Fill the grid with numbers 1–9 Every row, column, and 3x3 box must contain each number exactly once Use logic, not guesswork! With intuitive controls, clean visuals, and helpful features, this Sudoku app is perfect for quick sessions or deep focus time.

Screenshots

simian.interface++4 screens
Timeless Sudoku4 screens

Verdict

The call

The clearest difference is in-app purchases: Timeless Sudoku at none against simian.interface++'s 1. simian.interface++'s advantage is ads (none vs shown) and update cadence (daily vs every 2 weeks). On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. simian.interface++ sells 1 one-off in-app purchase. Timeless Sudoku asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for simian.interface++ against 5.0 for Timeless Sudoku. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

UpkeepUpdate frequency

simian.interface++ ships an update daily, Timeless Sudoku every 2 weeks. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 5 level
simian.interface++ versus Timeless Sudoku: the parameters behind the verdict, then further details
Parametersimian.interface++Timeless Sudoku
PriceFreeFree
Rating5.0 (5 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings5 — better2
Update frequencyDaily — betterEvery 2 weeks
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size152 MB186 MB
Age rating4+4+
Developervested interest LLCTravel Bug Games

Customer experience

simian.interface++

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Timeless Sudoku

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

simian.interface++

One-time1
  • Buy Full Game$1.99
None

Timeless Sudoku

No in-app purchases

Questions

Is simian.interface++ free?
simian.interface++ is free to download, with in-app purchases available.
Is Timeless Sudoku free?
Timeless Sudoku is free to download, with no in-app purchases.
Which has better reviews, simian.interface++ or Timeless Sudoku?
simian.interface++ and Timeless Sudoku are both rated 5.0 out of 5 on the App Store, from 5 and 2 ratings respectively.
Do simian.interface++ or Timeless Sudoku have ads?
Timeless Sudoku shows ads; simian.interface++ does not.
Which is updated more often, simian.interface++ or Timeless Sudoku?
simian.interface++ ships an update daily, and Timeless Sudoku every 2 weeks. Most recently, simian.interface++ was updated on October 9, 2026 and Timeless Sudoku on October 11, 2026.

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