Comparison

The Block Unlock vs Fast Chess!

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

Head to head
About

The Block Unlock

Features
Read full description

The Block Unlock is a strategy focused puzzle game built around a simple idea: unscrew every block and reorganize the board into its final form. Each block is fixed with a screw. Slide the block in its movement direction to unscrew it. Once a block is released, it remains on the board and becomes part of the final layout. This creates new openings or new obstacles based on the choices you make. As you progress, levels introduce special blockers, directional locks, barriers, and restricted zones that force you to think ahead and structure your moves carefully. Features Unique unscrew and slide mechanic Blocks with movement rules and direction limits Blockers: locks, iced blocks, movable shapes, breakable shapes Challenging level designs Distinct visual style and custom color palette How to Play -Each block is attached with a screw. -Slide the block in its allowed direction to unscrew it. -Unscrewed blocks stay on the board in their new position. -Navigate around blockers, restricted areas, and limited paths. -Unscrew every block and form the correct board layout to finish the level. If you enjoy thoughtful puzzles that reward planning and observation, The Block Unlock offers a fresh and original challenge.

About

Fast Chess!

Experience a faster, more dynamic chess game on a compact 6x6 board. Perfect for quick thinking and sharp strategy, this app offers balanced matches against opponents suited to your skill level. Ideal for both enthusiasts and casual players seeking a fresh twist on the classic game.

Highlights
  • Unique 6x6 chess board
  • Short, intense matches
  • Balanced opponent matching
  • Clean, minimalist design
  • Ideal for quick breaks
  • Daily practice
Features
Read full description

6x6 Chess is a fast-paced chess experience designed for quick thinking and sharp strategy. With a compact board and shorter matches, every move matters more than ever. Play balanced matches against an opponent matched to your level, helping you sharpen your tactical instincts and decision-making. Perfect for players who love chess but want faster, more dynamic gameplay. Features: Unique 6x6 chess board format Short, intense matches Balanced opponents for fair gameplay Clean, minimalist design Ideal for quick breaks and daily practice Whether you're a chess enthusiast or a casual player, 6x6 Chess delivers a fresh and challenging twist on the classic game. Think faster. Play smarter. Win quicker.

Screenshots

The Block Unlock4 screens
Fast Chess!4 screens

Verdict

The call

The clearest difference is in-app purchases: The Block Unlock at none against Fast Chess!'s 5. Fast Chess!'s advantage is iOS requirement (12.0 vs 15.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fast Chess! sells 5 one-off in-app purchases. The Block Unlock asks for nothing beyond the download.

UpkeepUpdate frequency

The Block Unlock ships an update every 2 weeks, Fast Chess! fortnightly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
The Block Unlock versus Fast Chess!: the parameters behind the verdict, then further details
ParameterThe Block UnlockFast Chess!
PriceFreeFree
Rating—3.5 (2 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 weeksFortnightly — better
AdsYesYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size257 MB129 MB
Age rating4+4+
DeveloperFat Cat With a HatOksana Voloshyna

In-app purchases

None

The Block Unlock

No in-app purchases

5 purchases

Fast Chess!

One-time5
  • Hints package$1.99
  • Hints package (5)$2.99
  • Hints package (10)$3.99
Show 2 more
  • Hints package (20)$4.99
  • Hints package (30)$5.99

Questions

Is The Block Unlock free?
The Block Unlock is free to download, with no in-app purchases.
Is Fast Chess! free?
Fast Chess! is free to download, with in-app purchases available.
Do The Block Unlock or Fast Chess! have ads?
Both The Block Unlock and Fast Chess! show ads.
Which is updated more often, The Block Unlock or Fast Chess!?
The Block Unlock ships an update every 2 weeks, and Fast Chess! fortnightly. Most recently, The Block Unlock was updated on October 30, 2026 and Fast Chess! on November 5, 2026.

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