Comparison

Guroku Rainbow vs PG Nonogram

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

Head to head
About

Guroku Rainbow

This puzzle game challenges players to strategically move colored stones to their matching target squares. New stone types add complexity and require clever planning to solve increasingly difficult brain teasers. Compete with others on global leaderboards and unlock achievements.

Highlights
  • Move colored stones to target squares
  • New rainbow and white stone types
  • 110+ challenging puzzles
  • Simple controls and easy-to-learn rules
  • Global leaderboard for performance comparison
  • Collect achievements
Features
Read full description

Guroku Rainbow is the successor to the popular Guroku game, which is expanded with new types of stones, bringing even more gameplay possibilities and even more interesting puzzles to solve. The player moves colored stones around the game grid, which determines the directions in which a stone can move at a given position. His goal is to get the individual stones to the target square of the same color. Each time the player moves a stone in a chosen direction, that stone does not stop moving until it hits another stone or arrives at a position on the game grid from which it is no longer allowed to move in that direction. This principle forces players to devise clever solutions, such as strategically placing other stones in such places that the moving stone stops where it is needed. This unique game mechanic, which won the original Guroku so many fans around the world with its originality, is expanded in the new Guroku Rainbow with two new types of stones. The rainbow stone (from which the game gets its name) can be placed on a target field of any colour. And because in Guroku the stone can no longer move once placed on the target square, the player must keep in mind when strategizing for a particular puzzle that the stone may accidentally stop in the wrong place. And frankly, some puzzles are deliberately designed so that the player must try to avoid such a mistake. The white stone, which is the second new feature that Guroku Rainbow brings, also doesn't have a target field of its color in the game grid. In fact, its property is that the first time it hits a regular stone of a base color, it takes the color from that stone and it stays that color. The player must therefore search for a solution to the puzzle that will allow him to recolour the white stone to the required colour at the right moment. Both of these innovations have allowed us to prepare 110 new puzzles that come with the game. And we'll be adding more as part of each update - as with the original Guroku, which now has 235 puzzles. What can you expect? FEATURES ▪The game is free. ▪Simple controls - just move the stones in the direction you want. ▪The rules are easy to learn, our tutorial in the introductory levels will help you with that. ▪Although the rules are simple, you will have a hard time solving the puzzles in the higher levels. The game is especially suitable for those who like to exercise their brain. ▪Compare your performance with other players on the global leaderboard. If you solve a puzzle with fewer moves, you will get a higher score. See how others are doing. ▪Collect achievements in the Game Center to add variety to your gaming experience. This game is available exclusively for iOS.

About

PG Nonogram

Features
Read full description

Nonogram - Picture Logic Puzzles Discover the addictive world of nonogram puzzles! Also known as picross, griddlers, or picture cross puzzles, nonograms are logic puzzles where you reveal a hidden picture by filling in cells on a grid based on number clues. How to Play: Each row and column has number clues that tell you how many consecutive cells should be filled. For example, "3 1" means there's a group of 3 filled cells, then at least one empty cell, then 1 filled cell. Use logic and deduction to figure out which cells to fill and which to mark as empty. When you complete the puzzle correctly, a beautiful pixel art picture is revealed! Features: • Multiple difficulty levels - Start with easy 5x5 puzzles and work your way up to challenging 15x15 grids • Achievement system - Track your progress and earn rewards as you master the game • Clean, intuitive interface - Easy tap controls to fill or mark cells • Timer to track your solving speed • Mistake checking to help you learn • Endless puzzles generated on demand • Save your progress automatically Why You'll Love It: • Perfect for puzzle enthusiasts who enjoy Sudoku, crosswords, and logic games • Train your brain with pure logic - no guessing required! • Relaxing gameplay with no time pressure • Beautiful pixel art pictures to discover • Play offline anytime, anywhere Challenge Your Mind: Nonograms are the perfect blend of logic, art, and satisfaction. Each puzzle is a unique challenge that exercises your deductive reasoning and pattern recognition skills. Whether you have 5 minutes or an hour, you can always fit in a puzzle! Start with smaller grids to learn the mechanics, then challenge yourself with larger, more complex puzzles. Every puzzle has exactly one solution that can be found through pure logic - no guessing needed! Download now and join millions of players worldwide who love nonogram puzzles!

Screenshots

Guroku Rainbow4 screens
PG Nonogram4 screens

Verdict

The call

The clearest difference is in-app purchases: PG Nonogram at none against Guroku Rainbow's 1. PG Nonogram also leads on update cadence (every 9 days vs every 4 months). On price, ads, device support and iOS requirement 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. Guroku Rainbow sells 1 one-off in-app purchase. PG Nonogram asks for nothing beyond the download.

UpkeepUpdate frequency

Guroku Rainbow ships an update every 4 months, PG Nonogram every 9 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Guroku Rainbow versus PG Nonogram: the parameters behind the verdict, then further details
ParameterGuroku RainbowPG Nonogram
PriceFreeFree
Rating4.8 (22 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings22 — better—
Update frequencyEvery 4 monthsEvery 9 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size62 MB20 MB
Age rating4+4+
DeveloperMMXIX.CZ s.r.o.Celtic Wards, LLC

In-app purchases

1 purchases

Guroku Rainbow

One-time1
  • Remove Ads$0.99
None

PG Nonogram

No in-app purchases

Questions

Is Guroku Rainbow free?
Guroku Rainbow is free to download, with in-app purchases available.
Is PG Nonogram free?
PG Nonogram is free to download, with no in-app purchases.
Do Guroku Rainbow or PG Nonogram have ads?
Both Guroku Rainbow and PG Nonogram show ads.
Which is updated more often, Guroku Rainbow or PG Nonogram?
Guroku Rainbow ships an update every 4 months, and PG Nonogram every 9 days. Most recently, Guroku Rainbow was updated on November 3, 2026 and PG Nonogram on October 30, 2026.

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