Comparison

Rainbow Piece vs AXIØM Puzzle Stacking Games

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

Head to head
About

Rainbow Piece

Features
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Rainbow Piece: Relaxing Circular Jigsaw. Escape the stress of high scores. Enjoy a pure, calm puzzle experience on your wrist. 【How to Play】 - Move: Drag your finger on the screen to move the pieces. - Rotate: Turn the Digital Crown to rotate the selected piece. 【Choose Your Challenge】 - Normal: Relatively easy, as you solve the puzzle by following the rainbow color gradient. - Hard: Solve the puzzle by relying solely on the shape of the pieces. 【Two Sizes Available】 - 13 Pieces: Large pieces and a small number of pieces make for a casual game. - 25 Pieces: Small pieces and a large number of pieces make for a more thorough game. 【Tip】 Long press the screen any time to return to the start screen. Take your time. Find your peace. Complete the rainbow.

About

AXIØM Puzzle Stacking Games

Features
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AXIØM Energy is a color sorting puzzle game with a power/battery-theme and absolutely NO Ads! Pay-once-for-LIFE! How to Play - - - - - - - - 1. Tap a battery to select it’s top color 2. Tap another battery that is either empty or as the SAME color on top to transfer cells of color between batteries 3. Organize the color cells so each battery contains only cells of the same color 4. Try to get lower than your own times and numbers of transfers on subsequent plays! 5. Higher difficulties add more colors and more cells per battery, they’re designed to be legit hard so winning is an accomplishment! Launch Features– - 6 different puzzle games across 3 difficulty levels - Start with Easy puzzles to learn - Try the Normal and Hard puzzles when you've started to think your transfers ahead of time (Hard is genuinely difficult to master!) - Works OFFLINE, away from your companion iPhone® - Records your "Last Time" and your "All-Time Best" scores - ZERO Ads and ZERO In-App Purchases/Subscriptions - Rated for Kids age 4+ - All Plans include Family Sharing - Works with devices configured via Apple Watch For Your Kids - Supports 33 languages - Supports Apple Watch models running watchOS 10.5 or later Don't be fooled by other games that are "Free" but with hidden costs or annoying ads. With all plans you can play unlimited times, there are no ads (for real), plus plenty of challenge in the higher difficulties. The game is completely private, all data collected or transferred off device by the developer is 100% anonymous. Finally there are no loot boxes or gambling mechanics, making this version of sorting puzzles perfectly safe for all ages. Read more in the Standard EULA at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Apple, Apple Watch, watchOS, and iPhone are trademarks of Apple Inc.

Verdict

The call

The clearest difference is price: Rainbow Piece at Free against AXIØM Puzzle Stacking Games's $2.95. Rainbow Piece also leads on in-app purchases (none vs 2). AXIØM Puzzle Stacking Games's advantage is update cadence (every 4 days vs every 3 months) and iOS requirement (17.6 vs 26.0). On ads 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

Rainbow Piece is free to download; AXIØM Puzzle Stacking Games costs $2.95 up front. AXIØM Puzzle Stacking Games sells 2 in-app purchases, starting at $2.99 per year. Rainbow Piece asks for nothing beyond the download.

UpkeepUpdate frequency

Rainbow Piece ships an update every 3 months, AXIØM Puzzle Stacking Games every 4 days. The most recent releases landed on October 15, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 2 level
Rainbow Piece versus AXIØM Puzzle Stacking Games: the parameters behind the verdict, then further details
ParameterRainbow PieceAXIØM Puzzle Stacking Games
PriceFree — better$2.95
Update frequencyEvery 3 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, Apple WatchiPhone, Apple Watch
Requires iOS26.017.6 — better
Further details — not scored
Size1 MB6 MB
Age rating4+4+
DeveloperKiyoshi IzumiNICHOLAS IVAN DERK

In-app purchases

None

Rainbow Piece

No in-app purchases

2 purchases

AXIØM Puzzle Stacking Games

Subscriptions1
  • Yearly Access1 Month trial$2.991 Year
One-time1
  • Lifetime Access$14.99

Questions

Is Rainbow Piece free?
Rainbow Piece is free to download, with no in-app purchases.
Is AXIØM Puzzle Stacking Games free?
AXIØM Puzzle Stacking Games costs $2.95, and also offers in-app purchases.
Do Rainbow Piece or AXIØM Puzzle Stacking Games have ads?
Neither Rainbow Piece nor AXIØM Puzzle Stacking Games shows ads.
Which is updated more often, Rainbow Piece or AXIØM Puzzle Stacking Games?
Rainbow Piece ships an update every 3 months, and AXIØM Puzzle Stacking Games every 4 days. Most recently, Rainbow Piece was updated on October 15, 2026 and AXIØM Puzzle Stacking Games on September 23, 2026.

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