Comparison

MultiMaze vs Opdoku = Calcudoku + Mathdoku

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

Head to head
About

MultiMaze

Navigate balls through challenging puzzles using force fields. This game offers a unique twist on traditional maze experiences, providing engaging and fun gameplay.

Highlights
  • Force field mechanics
  • Intriguing puzzles
  • Unique maze gameplay
  • Multiple balls
  • Engaging challenges
Features
Read full description

Several balls held together by force fields must make their way through a series of intriguing puzzles. Not your usual maze game, and way more fun.

About

Opdoku = Calcudoku + Mathdoku

This logic puzzle game combines Sudoku-style number placement with mathematical operations. Solve grids where each digit appears once per row/column and within groups that must equal a specific mathematical result. Offers unique variations and an infinite supply of puzzles.

Highlights
  • Sudoku-like row and column constraints
  • Mathematical group operations
  • Optional min/max operations
  • Unknown mathematical operations
  • Unknown group results
  • Unique puzzle solutions
  • Infinite puzzle generation
Features
Read full description

M.: »Absolutely love this app - simple easy to use interface and free.« D.: »There's no advertising, they don't ask you for money, and the puzzles are great.« Opdoku is completely free of charge, with no adverts or additional purchases. Sounds good? Try it out today! The rules are simple: ○ As in Sudoku, each digit can only appear once in each row and column. ○ Each digit is part of a group, each of which has a mathematical operation and a result. All digits in the group have to achieve the specified result using this mathematical operation. Your task is to enter the digits in the grid so that both of these rules are met. Sounds easy? Give it a try! Opdoku is similar to Mathdoku, but with three improvements: ○ If you wish, the puzzle can also have two additional mathematical operations – minimum and maximum. This makes the game more varied and diverse. ○ You can solve puzzles in which only the result of a group is known, but not the mathematical operation. How is 4 reached? Is it 1 + 3, 1 x 4 or 4 / 1? Anything is possible! Hint – 1 is always present. ○ You can even solve puzzles in which not all results of the groups are known. Only geniuses need apply! All Opdoku puzzles have a unique solution. As they are generated automatically a virtually infinite number of puzzles are available. These range from easy ones on a 3x3 grid to virtually impossible ones with barely any clues on a 6x6 grid.

Screenshots

MultiMaze4 screens
Opdoku = Calcudoku + Mathdoku4 screens

Verdict

The call

The clearest difference is rating: Opdoku = Calcudoku + Mathdoku at 4.3 against MultiMaze's 3.3. Opdoku = Calcudoku + Mathdoku also leads on in-app purchases (none vs 6). MultiMaze's advantage is ratings volume (578 vs 12) and update cadence (every 3 weeks vs every 2 months). On price, review sentiment, ads and monetization model 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. MultiMaze sells 6 one-off in-app purchases. Opdoku = Calcudoku + Mathdoku asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Opdoku = Calcudoku + Mathdoku holds the better App Store score, 4.3 against 3.3. That said, the two scores are not equally well evidenced: MultiMaze has 578 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 65% of MultiMaze's written reviews are positive against 67% of Opdoku = Calcudoku + Mathdoku's.

UpkeepUpdate frequency

MultiMaze ships an update every 3 weeks, Opdoku = Calcudoku + Mathdoku every 2 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

Scorecard4 real differences · 6 level
MultiMaze versus Opdoku = Calcudoku + Mathdoku: the parameters behind the verdict, then further details
ParameterMultiMazeOpdoku = Calcudoku + Mathdoku
PriceFreeFree
Rating3.3 (578 ratings)4.3 (12 ratings) — better
Positive reviews64.7% of reviews66.7% of reviews — better
Number of ratings578 — better12
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.315.6 — better
Further details — not scored
Size7 MB0 MB
Age rating4+4+
DeveloperSquzChristian Rusche

Customer experience

MultiMaze

All ratings578 ratings
Positive48.1%
Neutral20.2%
Negative31.7%
Written reviews85 reviews
Positive64.7%
Neutral17.6%
Negative17.6%

Opdoku = Calcudoku + Mathdoku

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews9 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

6 purchases

MultiMaze

One-time6
  • Kids Pack$0.99
  • Multiball pack$0.99
  • Classic Pack$0.99
Show 3 more
  • Master pack$2.99
  • Grandmaster Pack$4.99
  • All Packs$9.99
None

Opdoku = Calcudoku + Mathdoku

No in-app purchases

Questions

Is MultiMaze free?
MultiMaze is free to download, with in-app purchases available.
Is Opdoku = Calcudoku + Mathdoku free?
Opdoku = Calcudoku + Mathdoku is free to download, with no in-app purchases.
Which has better reviews, MultiMaze or Opdoku = Calcudoku + Mathdoku?
Opdoku = Calcudoku + Mathdoku is rated higher. MultiMaze averages 3.3 out of 5 from 578 ratings, while Opdoku = Calcudoku + Mathdoku averages 4.3 from 12 ratings.
Do MultiMaze or Opdoku = Calcudoku + Mathdoku have ads?
Neither MultiMaze nor Opdoku = Calcudoku + Mathdoku shows ads.
Which is updated more often, MultiMaze or Opdoku = Calcudoku + Mathdoku?
MultiMaze ships an update every 3 weeks, and Opdoku = Calcudoku + Mathdoku every 2 months. Most recently, MultiMaze was updated on October 23, 2026 and Opdoku = Calcudoku + Mathdoku on October 26, 2026.

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