Comparison

Block Harmonics vs CatBlock

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

Head to head
About

Block Harmonics

Features
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With every placement, a gentle tone layers into a small harmonics. Block Harmonics is a clean, endlessly replayable placement puzzle: drop varied shapes onto an 8Ɨ8 board and clear filled rows and columns. Difficulty adapts gradually to your play. Build combos and simultaneous clears to push your score, and aim for a new personal best. — Highlights — • Variety of pieces: from monomino to pentomino/hexomino. • Smooth controls: tap to pick, drag to place, with helpful snapping. • Scoring that rewards skill: combo chains, row/column simultaneous clears, perfect fits, area wipes, large-piece bonuses. • Sound that feels good: tone and stereo change by color and position; combos sparkle with chords. Ambient BGM supports focus or relaxation. • Settings: toggle SFX, 4-step volume, display handle name. • Offline-friendly: scores are saved on device. No ads, no purchases. — How to Play — 1) Choose from three pieces and place them on the board. 2) Fill any row or column to clear it and score points. 3) Clear repeatedly to raise your combo multiplier. The game ends when no placement is possible. — Tips — • Plan for multiple rows/columns at once. • Aim for perfect fits to earn a bonus. • Use large pieces and area clears to spike your score. Privacy: scores and session data stay on your device and are not transmitted. Compose your own little harmonics of color and shape.

About

CatBlock

Read full description

CatBlock is a relaxing and easy-to-play block puzzle game with a cute cat theme. Place blocks on an 8x8 board, clear rows and columns, and keep the board open as long as possible. The controls are simple, but smart placement and planning are the key to getting a high score. Features: • Simple drag-and-drop gameplay • Cute cat-themed visual style • Easy to learn, satisfying to master • Relaxing puzzle experience • Great for short play sessions If you enjoy block puzzles, cozy games, and cute cats, CatBlock is a fun game to pick up anytime.

Screenshots

Block Harmonics3 screens
CatBlock1 screens

Verdict

The call

The clearest difference is ads: CatBlock at none against Block Harmonics's shown. Block Harmonics's advantage is update cadence (weekly vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Block Harmonics ships an update weekly, CatBlock every 3 weeks. Both last shipped on September 10, 2026.

Scorecard2 real differences Ā· 4 level
Block Harmonics versus CatBlock: the parameters behind the verdict, then further details
ParameterBlock HarmonicsCatBlock
PriceFreeFree
Update frequencyWeekly — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size33 MB105 MB
Age rating4+4+
DeveloperIkuya Terasakakouryou cho

In-app purchases

None

Block Harmonics

No in-app purchases

None

CatBlock

No in-app purchases

Questions

Is Block Harmonics free?
Block Harmonics is free to download, with no in-app purchases.
Is CatBlock free?
CatBlock is free to download, with no in-app purchases.
Do Block Harmonics or CatBlock have ads?
Block Harmonics shows ads; CatBlock does not.
Which is updated more often, Block Harmonics or CatBlock?
Block Harmonics ships an update weekly, and CatBlock every 3 weeks. Most recently, Block Harmonics was updated on September 10, 2026 and CatBlock on September 10, 2026.

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