Happy Stack Equilibrium vs Wool Sort!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Happy Stack Equilibrium
Read full descriptionHide full description
Stack happy shapes and build the perfect figure in this relaxing 3D balance puzzle! Drag each smiling block onto the tower, find the right spot and keep everything steady until the timer runs out. Cubes, balls, triangles and long bars: every level is a new little challenge for your balance skills. HOW TO PLAY • Drag a shape and release it on the tower • Place every piece of the level • Keep the tower standing until the countdown ends • If a shape falls, try again! FEATURES • Simple one-finger controls: easy to learn, hard to master • 50 colorful levels with their own figures • Cute shapes with happy (and scared!) faces • Collect diamonds and use them to skip tricky shapes • Watch a video to earn extra diamonds • Relaxing music and satisfying sounds • Play offline, anytime, anywhere • Free to play Can you keep them all happy? Download Happy Stack Equilibrium and start stacking!
Wool Sort!
Read full descriptionHide full description
The pictures in this world have lost their color and only a team of over-enthusiastic bunnies can fix that. Each level starts as a blank scene. With a single tap, you send a bunny painter hopping in to splash paint across the board, filling in matching areas and slowly revealing the image underneath. Every bunny has a limited amount of paint, so choosing who goes in -and when- matters more than how fast you tap. Some bunnies need a break before jumping back in. Others are better saved for later. There’s always a small queue waiting for your signal, and the painting space itself can get crowded if you rush things. Take your time, keep the colors flowing, and watch the scene come together one perfect splash at a time. It’s a calm, clever puzzle loop built around rhythm, planning, and that deeply satisfying moment when the final color clicks into place. Why it’s so satisfying: One-tap play that feels relaxed, not rushed Color-based puzzles that reward smart timing Gentle strategy through limited paint and positioning A steady sense of progress as images come alive For players who enjoy soothing puzzles, cute characters, and progress you can see. Pick a bunny. Add some color. Reveal the picture.
Screenshots
Verdict
The clearest difference is in-app purchases: Happy Stack Equilibrium at none against Wool Sort!'s 9. Happy Stack Equilibrium also leads on ads (none vs shown). Wool Sort!'s advantage is update cadence (every 2 days vs every 76 months) and iOS requirement (13.0 vs 15.0). On price 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
Both are free to download. Wool Sort! sells 9 one-off in-app purchases. Happy Stack Equilibrium asks for nothing beyond the download.
Happy Stack Equilibrium ships an update every 76 months, Wool Sort! every 2 days. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.
| Parameter | Happy Stack Equilibrium | Wool Sort! |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 76 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 75 MB | 254 MB |
| Age rating | 4+ | 4+ |
| Developer | Francesc Navarro Machio | SURREEL YAZILIM VE PAZARLAMA ANONIM SIRKETI |
In-app purchases
Happy Stack Equilibrium
No in-app purchases
Wool Sort!
- 1000 Coin$1.99
- Small Bundle$4.99
- 5000 Coin$8.99
Show 6 moreShow fewer
- Medium Bundle$9.99
- 10000 Coins$17.99
- Ultra Bundle$19.99
- 25000 Coins$34.99
- 50000 Coins$59.99
- 100000 Coins$99.99
Questions
Is Happy Stack Equilibrium free?
Is Wool Sort! free?
Do Happy Stack Equilibrium or Wool Sort! have ads?
Which is updated more often, Happy Stack Equilibrium or Wool Sort!?
Other comparisons















