Comparison

Constellations Puzzle vs Constant Challenge

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

Head to head
About

Constellations Puzzle

Learn constellations through a fun jigsaw puzzle experience. Choose from three modes featuring different sets of constellations. Compete for the best time, collect picture panels, and use assistance features to help you learn.

Highlights
  • Learn constellations via jigsaw puzzles
  • Three distinct constellation modes
  • Timed challenges for best scores
  • Collectible picture panels
  • Assisted navigation feature
  • Global player leaderboards
Features
Read full description

An educational puzzle game produced by Digital Gene. This is an educational game that allows you to learn the constellation as if you play a jigsaw puzzle. This game is designed to be simple yet fun to play. The app is best suited for people who want to learn the constellation or students who want to get ready for the exams. Or why don't you try this game to stay sharp during your spare time? There are three modes available: one featuring 12 constellations on the ecliptic like Aries and Libra, which are also used in astrology; one featuring the 48 constellations listed by Ptolemy, such as Orion and Cassiopeia, which appear in ancient myth; and one featuring the 88 constellations recognized by the IAU. You can improve your knowledge as you play the game aiming for the best time or compete against players from all over the world. You can also collect picture panels when you satisfy certain conditions. So do your best to get all of them. When you're stuck on finding the location, use the assisted function. It will help you to navigate the correct location without hassling yourself. Please enjoy it. (Note: Due to the nature of puzzle games, certain stars are emphasized and certain stars omitted. ) (Note: As there are no official diagrams for the lines connecting the constellations, the forms of the constellations here may differ from those in other material. )

About

Constant Challenge

Features
Read full description

Constant Challenge is a training app designed to help you memorize mathematical constants like π (pi) and e while testing your skills through various challenge modes. Each constant offers the same set of game modes, allowing you to practice, compete, and improve your memory and speed. Features: - Practice Mode: Learn and memorize digits at your own pace - Time Attack Mode: Enter as many correct digits as possible within a time limit - Stage Mode: Progress through structured levels of increasing difficulty - Local Battle Mode: Competitive play possible Track your performance, challenge yourself, and aim for high scores. Perfect for students, math enthusiasts, and anyone who enjoys memory challenges. Note: This app focuses on memorization and training of mathematical constants.

Screenshots

Constellations Puzzle4 screens
Constant Challenge4 screens

Verdict

The call

The clearest difference is in-app purchases: Constellations Puzzle at none against Constant Challenge's 3. Constellations Puzzle also leads on iOS requirement (13.0 vs 26.0). Constant Challenge's advantage is ads (none vs shown) and update cadence (every 2 days vs every 5 months). On price 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. Constant Challenge sells 3 one-off in-app purchases. Constellations Puzzle asks for nothing beyond the download.

UpkeepUpdate frequency

Constellations Puzzle ships an update every 5 months, Constant Challenge every 2 days. The most recent releases landed on October 10, 2026 and September 28, 2026 respectively.

Scorecard4 real differences · 6 level
Constellations Puzzle versus Constant Challenge: the parameters behind the verdict, then further details
ParameterConstellations PuzzleConstant Challenge
PriceFreeFree
Rating4.8 (21 ratings) — better—
Positive reviews84.4% of reviews—
Number of ratings21 — better—
Update frequencyEvery 5 monthsEvery 2 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.0
Further details — not scored
Size14 MB16 MB
Age rating4+4+
DeveloperPlus Inc. (Japan)Kaname Inoue

In-app purchases

None

Constellations Puzzle

No in-app purchases

3 purchases

Constant Challenge

One-time3
  • Unlock the Square Root of 2 (√2)$0.99
  • Unlock the Golden Ratio (φ)$0.99
  • Unlock the Euler–Mascheroni (γ)$0.99

Questions

Is Constellations Puzzle free?
Constellations Puzzle is free to download, with no in-app purchases.
Is Constant Challenge free?
Constant Challenge is free to download, with in-app purchases available.
Do Constellations Puzzle or Constant Challenge have ads?
Constellations Puzzle shows ads; Constant Challenge does not.
Which is updated more often, Constellations Puzzle or Constant Challenge?
Constellations Puzzle ships an update every 5 months, and Constant Challenge every 2 days. Most recently, Constellations Puzzle was updated on October 10, 2026 and Constant Challenge on September 28, 2026.

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