Blockudoku - Block Puzzle Game vs Happy Color® – Coloring Games

How do Blockudoku - Block Puzzle Game and Happy Color® – Coloring Games compare on difficulty, ad pressure, in-app-purchase pressure and what real reviewers say? A side-by-side look, grounded in App Store data.

 Blockudoku - Block Puzzle Game iconBlockudoku - Block Puzzle GameHappy Color® – Coloring Games iconHappy Color® – Coloring Games
GenrePuzzlePuzzle
PriceFreeFree
Difficultymediumeasy
Ad intensityhighhigh
In-app-purchase pressurelowmedium
Typical sessionmediumvariable
Rating4.7 / 54.8 / 5
Ratings count657,2153,389,737
Reviews say
What players like
  • Addictive puzzle mechanics
  • No time pressure lets you plan ahead
  • Satisfying line and square combos
Common complaints
  • Ads freeze screen and require restart
  • Ad frequency excessive (multiple per level and between moves)
  • App crashes after recent updates
What players like
  • Calming and meditative for anxiety/ADHD
  • Vast library of pictures including Disney content
  • Satisfying animated playback on completion
Common complaints
  • Excessive ads interrupt coloring mid-session
  • Ads pop up and open browser tabs without permission
  • Touch sensitivity issues requiring multiple taps

Blockudoku - Block Puzzle Game — A Sudoku-block puzzle hybrid where you drop pieces to clear lines and squares on a 9x9 grid. (rated medium difficulty, high ad pressure) Happy Color® – Coloring Games — A relaxing color-by-numbers game with 40,000+ pictures designed to calm anxiety and ADHD through meditative coloring. (rated easy difficulty, high ad pressure)

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Data: Apple App Store, as of 2026-08-11. Last updated 2026-08-11.