UP 9 vs Cat Stack
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
UP 9
This addictive puzzle game challenges you to merge numbered hexagons on a grid. Stack and combine pieces to reach the number 9, strategically managing space to avoid filling the board. Enjoy brain-training fun with unlimited play and no time limits.
- Slide numbered hexagons onto a grid
- Stack same numbers to merge
- Rotate pieces before dropping
- Reach the number 9
- Unlimited reloads
- No time limits
- Play offline
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Up 9 is the most addicting new puzzle game! Simply slide up numbered hexagons on the honey grid. Stack the same numbers to merge them up to 9. Be smart when you stack pieces. The grid can get filled up very easily. Up 9 is a fun and exciting block merge game, and you can play continuously for free! It is a simple puzzle game that will challenge you, while also training your brain. HOW TO PLAY • Drop hexagon numbers onto the honey grid • Tap an item to rotate your game piece before dropping it. • Form a higher number by merging three or more pieces of the same number. • 9 is the final number, which is quite interesting. Try merging three 9’s and see what happens. FEATURES • Fun and easy to learn. • Unlimited reloads, NO TIME LIMITS. • Challenge your friends with your score. • Play offline anytime. • Eye-friendly colors. Enjoy playing! To opt out of CrazyLabs sales of personal information as a California resident, please visit the settings page within this app. For more information visit our privacy policy: https://crazylabs.com/app
Cat Stack
Rotate and position various cats to build the tallest possible tower. Be careful, as a fallen cat means game over. Discover and collect over 70 unique cat breeds, each with different effects that can impact your tower's stability.
- Stack cats to build towers
- Physics-based gameplay
- Collect over 70 cat breeds
- Cats have unique effects
- High score challenges
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How Many Cats Can You Stack? HOW HIGH CAN YOU GET? Rotate, position and release cats to make the tallest Cat Stack you can and score the highest points! If your cat falls off the tower, it’s game over for you and your kitty! SMELLY CATS! Do you love cats? Even when they are smelly, glowing or made of jelly?! Keep an eye out for all the distinctive cats with different effects - they might make your tower fall! COLLECT 'EM ALL! Unlock extra cats while playing! Make sure to collect all 70+ different cat breeds. Meow! JOIN THE FULL FAT COMMUNITY Like: facebook.com/fullfatgames
Screenshots
Verdict
The clearest difference is review sentiment: Cat Stack at 79% against UP 9's 47%. Cat Stack also leads on rating (4.8 vs 4.5). UP 9's advantage is ratings volume (3K vs 889) and iOS requirement (12 vs 15.0). On price, update cadence, ads and in-app purchases 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. UP 9 sells 7 one-off in-app purchases and Cat Stack sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Cat Stack holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 3K and 889 respectively. Written reviews point the same way: 47% of UP 9's written reviews are positive against 79% of Cat Stack's.
UP 9 ships an update every 2 months, Cat Stack every 3 months. The most recent releases landed on September 18, 2026 and September 4, 2026 respectively.
| Parameter | UP 9 | Cat Stack |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (3K ratings) | 4.8 (889 ratings) — better |
| Positive reviews | 46.8% of reviews | 79.3% of reviews — better |
| Number of ratings | 3K — better | 889 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12 — better | 15.0 |
| Further details — not scored | ||
| Size | 132 MB | 236 MB |
| Age rating | 12+ | 12+ |
| Developer | Coco Play | Full Fat Productions Ltd |
Customer experience
UP 9
Cat Stack
User reviews
UP 9
From 3K App Store ratingsWhat we love
- 🎮 Fun and addictive gameplay
- 💡 Challenging brain-teasing experience
- 🎨 Visually appealing design
Room to improve
- 🔍 Lack of clear instructions or tutorials
- 🔋 High battery consumption
- 🔍 Confusing or unintuitive controls
- 🔍 Unclear scoring system or progression
- 🐛 Frequent crashes or freezes
Cat Stack
From 889 App Store ratingsWhat we love
- 🐱 Cute cats
- 🕹️ Fun and addictive gameplay
- 💡 Unique concept
- 👍 Simple and easy to play
- 🕰️ Good for passing time
Room to improve
- 🔍 Lack of variety in cat shapes
- 🔊 Sound issues and audio cutting out
- 📺 Too many ads, disruptive to gameplay
- 🔒 Paid version still has ads
Bugs and requests
UP 9
Reported bugs
4 issues- Scores not updating correctly on leaderboard
- Purchased ad-free version still showing ads
- Game restarting unexpectedly after exiting
- Pieces moving on their own during gameplay
Requested features
4 requests- Add option to disable background music
- Improve leaderboard functionality
- Implement an undo/redo feature
- Provide more detailed in-game help and tutorials
Cat Stack
Reported bugs
3 issues- Crashes and freezes
- Unresponsive controls
- Ads not loading properly
Requested features
4 requests- More cat variety
- Pause button
- Offline play mode
- Customization options
In-app purchases
UP 9
- Get 100 Coins$0.99
- No Ads Pack$1.99
- Get 300 Coins$1.99
Show 4 moreShow fewer
- Get 1000 Coins$4.99
- Starter Pack$4.99
- Get 3000 Coins$9.99
- Get 10k Coins$24.99
Cat Stack
- CS Gem Pack 1$0.99
- Bundle Pack 1$4.99
- CS Gem Pack 2$4.99
Show 3 moreShow fewer
- Remove Ads$5.99
- Bundle Pack 2$9.99
- CS Gem Pack 3$9.99
