Comparison

Skyscraper Logic vs must be one

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

Head to head
About

Skyscraper Logic

Features
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Skyscraper Logic is a modern grid-based puzzle game that rewards careful thinking, observation, and logical deduction. With simple rules and increasingly challenging puzzles, it's easy to learn but deeply satisfying to master. Your goal is to place exactly one of each unique item in every row and column while leaving the remaining spaces empty. Clues around the edges of the grid tell you which item is visible first when viewed from that direction. Since only the nearest visible item counts, every placement matters. Analyze the clues, eliminate possibilities, and solve each puzzle using logic aloneโ€”no guessing required. Whether you're looking for a quick mental workout or a longer puzzle session, Skyscraper Logic offers endless replayability with procedurally generated puzzles. Every new game is a fresh challenge, ensuring you'll never run out of grids to solve. Play completely offline wherever you are. Your progress and completed puzzles are automatically recorded, making it easy to track your improvement and challenge yourself to solve puzzles faster over time. Personalize your experience with a variety of colorful themes, including: Space โ€“ UFO, Rocket, Satellite Magic โ€“ Wand, Crystal, Potion Pirate โ€“ Ship, Treasure, Compass Ice โ€“ Snowflake, Igloo, Penguin Lava โ€“ Volcano, Flame, Magma Jungle โ€“ Tree, Monkey, Parrot Features โ€ข Endless procedurally generated puzzles โ€ข Pure logic gameplay with no guessing โ€ข Play completely offlineโ€”no internet required โ€ข Multiple difficulty levels for all skill levels โ€ข Beautiful visual themes to customize your puzzles โ€ข Track completed puzzles and gameplay statistics โ€ข Clean, modern interface with smooth controls โ€ข Perfect for daily brain training and improving logical thinking If you enjoy Sudoku, Nonograms, Kakuro, Futoshiki, or other logic grid puzzles, Skyscraper Logic offers a fresh and rewarding challenge that exercises your mind while providing a relaxing gameplay experience. Train your brain, sharpen your deduction skills, and enjoy endless logic puzzles with Skyscraper Logic.

About

must be one

Read full description

must be one is a number puzzle built on a single rule โ€” the one in its name. A grid of numbers. Four operators. Combine neighboring tiles with arithmetic and collapse the whole board down to a single 1. That's the entire game: all becomes one. It reads as obvious for about three moves. Then it doesn't. - One rule, no filler โ€” no twenty-minute tutorial, no menus to dig through. You understand it in seconds and spend the rest of your time actually thinking. - Always solvable โ€” every stage is generated so that a solution is guaranteed to exist before you ever see it. If you're stuck, that's on you, not the board. - A climb that keeps widening โ€” early stages stay in single digits; later ones open the range up and the arithmetic gets meaner. - Free, and quick to pick up. One stage on the train; look up an hour later. From office-canard โ€” a one-person studio making small, system-first games. If this one gets its hooks in, there are more small games where it came from.

Screenshots

Skyscraper Logic4 screens
must be one4 screens

Verdict

The call

The clearest difference is in-app purchases: must be one at none against Skyscraper Logic's 1. On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Skyscraper Logic sells 1 one-off in-app purchase. must be one asks for nothing beyond the download.

UpkeepUpdate frequency

Skyscraper Logic ships an update every 3 weeks, must be one every 5 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard1 real difference ยท 5 level
Skyscraper Logic versus must be one: the parameters behind the verdict, then further details
ParameterSkyscraper Logicmust be one
PriceFreeFree
Update frequencyEvery 3 weeks โ€” betterEvery 5 weeks
AdsYesYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.6 โ€” better
Further details โ€” not scored
Size28 MB6 MB
Age rating12+4+
DeveloperHuy Huynhoffice-canard games

In-app purchases

1 purchases

Skyscraper Logic

One-time1
  • Remove Ads$5.99
None

must be one

No in-app purchases

Questions

Is Skyscraper Logic free?
Skyscraper Logic is free to download, with in-app purchases available.
Is must be one free?
must be one is free to download, with no in-app purchases.
Do Skyscraper Logic or must be one have ads?
Both Skyscraper Logic and must be one show ads.
Which is updated more often, Skyscraper Logic or must be one?
Skyscraper Logic ships an update every 3 weeks, and must be one every 5 weeks. Most recently, Skyscraper Logic was updated on November 5, 2026 and must be one on October 31, 2026.

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