Comparison

BlockKnox Zen vs Solitaire Stack Sort

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

Head to head
About

BlockKnox Zen

Features
Read full description

Discover the ultimate block puzzle experience, meticulously crafted for modern screens. Block Knox Zen is not just a game; it is a digital retreat. By combining incredibly satisfying physics, rich ambient audio, and flawless native performance, we’ve created a puzzle game you can actually feel. ENTER THE ZEN STATE Escape the daily grind and find your flow state. Block Knox is designed to be a deeply relaxing, mindful experience. There are no ticking clocks, no stressful penalties, and no rushed decisions. Take a deep breath, listen to the calming ambient soundscapes, and let your mind unwind as you strategically place each block. STRATEGIC GRID SURVIVAL Test your spatial logic against Knox Blocks—heavy iron cages that drop onto the board to disrupt your flow. Every move counts. Drop your blocks carelessly, and you will force the computer to spawn cages in devastating locations, quickly ending your run. Clear adjacent lines to crack them open, or hoard powerful golden Zen Keys to shatter them instantly and save your game from the brink of defeat. CHOOSE YOUR AESTHETIC • Sahara Woodcraft: A premium, tactile wooden board featuring rich, earthy hues, hanging jungle vines, drifting leaves, and a deeply organic atmosphere. • Majestic Purple: A high-contrast, neon-drenched retro arcade mode built to make OLED screens pop with vibrant, glowing energy. ZERO INTERRUPTIONS. 100% FREE TO PLAY. Block Knox respects your time, your focus, and your device. There are NO ADS anywhere in this game. No pop-ups, no forced videos, and no hidden banners to break your concentration. The game is entirely free to download and enjoy at your own pace. PREMIUM FEATURES: • Granular Haptics: Feel the satisfying, physical weight of every block as it snaps perfectly into the grid. • Dynamic Soundscapes: Choose from multiple relaxing background tracks paired with crisp, responsive sound effects. • Hidden Secrets: Discover the interactive System Terminal hidden in the menus. Can you decrypt the developer codes for exclusive rewards? • Global Leaderboards & Achievements: Compete peacefully against the world and unlock custom badges via seamless Apple Game Center integration. From PyxelBlaze, the creator of Tic Tac Zoo and NotchPong, welcome to your new daily puzzle obsession. Breathe in, drop a block, and find your Zen.

About

Solitaire Stack Sort

A relaxing card puzzle game that blends strategic sorting with satisfying merge mechanics. Organize, stack, and merge matching cards to create higher-value cards and train your brain.

Highlights
  • Unique Solitaire Puzzle Gameplay
  • Satisfying Card-Merging Mechanics
  • Brain-Training Puzzle Fun
  • Smooth Visuals and Animations
  • Simple Controls, Deep Strategy
  • Powerful Boosters
Features
Read full description

Solitaire Stack Sort is a relaxing yet challenging solitaire card puzzle game that combines strategic sorting with satisfying merge card gameplay. Organize, stack, and merge matching cards to create higher-value cards. How to Play: - Sort and Match Cards: Move cards between stacks and group cards with the same number together. - Merge to Level Up: Combine matching cards to create a higher-value card. - Plan Every Move: Manage your space carefully and think ahead to build bigger card combinations. - Use Powerful Boosters: Get help when the board gets crowded and keep your progress going. Features: - Unique Solitaire Puzzle Gameplay – A fresh take on classic solitaire with satisfying card-merging mechanics. - Fun Casual Experience – Easy to learn, relaxing to play, and perfect for quick sessions anytime. - Brain-Training Puzzle Fun – Improve your logic, focus, and planning skills with every move. - Smooth Visuals and Animations – Enjoy clean graphics and rewarding merge effects. - Simple Controls, Deep Strategy – Accessible for casual players while offering plenty of challenges for puzzle lovers. Solitaire Stack Sort delivers the perfect blend of strategy and satisfaction. Sort the cards, clear the board, and discover how far you can go in this fun solitaire card puzzle adventure!

Screenshots

BlockKnox Zen4 screens
Solitaire Stack Sort4 screens

Verdict

The call

The clearest difference is ads: BlockKnox Zen at none against Solitaire Stack Sort's shown. Solitaire Stack Sort's advantage is iOS requirement (13.0 vs 17.6). On price, update cadence, in-app purchases 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. BlockKnox Zen sells 6 one-off in-app purchases and Solitaire Stack Sort sells 19 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BlockKnox Zen ships an update every 3 days, Solitaire Stack Sort every 5 days. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
BlockKnox Zen versus Solitaire Stack Sort: the parameters behind the verdict, then further details
ParameterBlockKnox ZenSolitaire Stack Sort
PriceFreeFree
Rating—4.8 (3K ratings) — better
Positive reviews—54.3% of reviews
Number of ratings—3K — better
Update frequencyEvery 3 days — betterEvery 5 days
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size83 MB371 MB
Age rating4+12+
DeveloperGuy MillerHM Games LLC FZ

In-app purchases

6 purchases

BlockKnox Zen

One-time6
  • 1,000 Coins$0.99
  • 5 Zen Keys$0.99
  • 3,000 Coins$2.99
Show 3 more
  • 25 Zen Keys$2.99
  • 6,000 Coins$4.99
  • 50 Zen Keys$4.99
19 purchases

Solitaire Stack Sort

One-time19
  • High Card Pack$0.99
  • Event Sale 1$0.99
  • Limited Offer 1$0.99
Show 16 more
  • Gold 1$1.99
  • Beginner Bundle 1$1.99
  • Beginner Bundle 2$4.99
  • Lose Offer 1$4.99
  • Limited Offer 2$4.99
  • Remove ads$6.99
  • Gold 2$7.99
  • Elite pack2 variants$9.99
  • Limited Offer 3$9.99
  • Beginner Bundle 3$9.99
  • Beginner Bundle All$12.99
  • Gold 3$14.99
  • Mega pack$19.99
  • Gold 4$29.99
  • Gold 5$54.99
  • Gold 6$99.99

Questions

Is BlockKnox Zen free?
BlockKnox Zen is free to download, with in-app purchases available.
Is Solitaire Stack Sort free?
Solitaire Stack Sort is free to download, with in-app purchases available.
Do BlockKnox Zen or Solitaire Stack Sort have ads?
Solitaire Stack Sort shows ads; BlockKnox Zen does not.
Which is updated more often, BlockKnox Zen or Solitaire Stack Sort?
BlockKnox Zen ships an update every 3 days, and Solitaire Stack Sort every 5 days. Most recently, BlockKnox Zen was updated on October 3, 2026 and Solitaire Stack Sort on October 12, 2026.

Other comparisons