Flow Free vs Sudoku.com - Number Games

How do Flow Free and Sudoku.com - Number 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.

	Flow Free	Sudoku.com - Number Games
Genre	Puzzle	Puzzle
Price	Free	Free
Difficulty	variable	variable
Ad intensity	medium	high
In-app-purchase pressure	low	high
Typical session	variable	medium
Rating	4.8 / 5	4.8 / 5
Ratings count	400,377	1,840,496
Reviews say	What players like Hundreds of free levels and daily puzzles Smooth, polished gameplay with gradual difficulty progression Relaxing and meditative experience Common complaints Excessive ads even after purchasing ad-free version Ad-free purchase doesn't actually remove ads (especially for hints) Game stability issues and broken daily/weekly puzzles	What players like Brain-stimulating puzzle variety and challenge levels Useful hints and auto-check features reduce frustration Leaderboard competition adds replayability Common complaints Excessive mid-game ads interrupt play frequently (every few moves/box completions) Ad close buttons malfunction or render off-screen, forcing app restart Aggressive ad-removal pricing ($14-20) feels exploitative

Flow Free — Connect matching colors with pipes to fill the board in this addictive, relaxing puzzle game with hundreds of free levels. (rated variable difficulty, medium ad pressure) Sudoku.com - Number Games — A brain-training sudoku puzzle game with thousands of classic puzzles across difficulty levels, marred by relentless mid-game advertising. (rated variable difficulty, high ad pressure)

Data: Apple App Store, as of 2026-07-29. Last updated 2026-07-29.