Rainbow Piece vs Viper maze
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Rainbow Piece
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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.
Viper maze
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Viper Maze is a retro-inspired snake puzzle game built exclusively for smartwatches. Swipe to slither through tight corridors and rotate the digital crown to turn. Each of the 100 handcrafted levels is a compact puzzle designed for short, satisfying play sessions — perfect for your wrist. No ads. No tracking. No distractions. Just you, the maze, and your instinct to survive. Designed specifically for smartwatch play.
Verdict
The clearest difference is price: Rainbow Piece at Free against Viper maze's $1.99. Rainbow Piece also leads on in-app purchases (none vs 1). Viper maze's advantage is iOS requirement (13.0 vs 26.0). On update cadence, 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
Rainbow Piece is free to download; Viper maze costs $1.99 up front. Viper maze sells 1 one-off in-app purchase. Rainbow Piece asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 15, 2026.
| Parameter | Rainbow Piece | Viper maze |
|---|---|---|
| Price | Free — better | $1.99 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, Apple Watch | iPhone, iPod, Apple Watch — better |
| Requires iOS | 26.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Kiyoshi Izumi | Martin Gruner |
In-app purchases
Rainbow Piece
No in-app purchases
Viper maze
- Unlock Full game$3.99
Questions
Is Rainbow Piece free?
Is Viper maze free?
Do Rainbow Piece or Viper maze have ads?
Which is updated more often, Rainbow Piece or Viper maze?
Other comparisons
