sumZ+ vs 13!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
sumZ+
Connect matching numbers in any direction to create their sum and achieve a higher score. This free puzzle game offers a relaxing yet addictive experience where longer chains lead to greater longevity. Play again and again to master the challenge.
- Connect like numbers
- Create sums
- Score-based gameplay
- Addictive puzzle mechanics
- Relaxing gameplay
Read full descriptionHide full description
Come play sumZ+ -- a newly released, extremely satisfying and addicting, free puzzle game! The game is simple. Connect like numbers in any direction and create their sum. The more you connect, the higher score you get. The higher numbers you make, the longer you'll last! Once you run out of moves, it’s game over! But you can always play again… Sit back, relax, and enjoy making sumz!
13!
Tap and merge colorful squares to reach the number 13. This simple yet extremely challenging puzzle game offers addictive gameplay where matching tiles of the same color yields higher numbers. Test your skills and see if you can join the elite 0.01% of players who achieve the ultimate goal.
- Tap and merge colorful squares
- Reach the number 13
- Match same colored tiles
- Extremely challenging gameplay
- Addictive puzzle experience
Read full descriptionHide full description
Simple,fun, addictive. And extremely challenging! Tap and merge colourful squares to reach 13. Match same coloured tiles to get higher numbers. Only 0.01% of players can achieve to 13. Can you? 13! will be your new Number Puzzle Addiction
Screenshots
Verdict
The clearest difference is ads: 13! at none against sumZ+'s shown. 13! also leads on rating (4.3 vs 4.1) and ratings volume (8.4K vs 839). sumZ+'s advantage is review sentiment (53% vs 34%). On price, update cadence, in-app purchases and monetization model 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. sumZ+ sells 7 one-off in-app purchases and 13! sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
13! holds the better App Store score, 4.3 against 4.1. That said, the two scores are not equally well evidenced: 13! has 8.4K ratings behind it against 839, so its average is the more settled of the two. Written reviews complicate that: 53% of sumZ+'s written reviews are positive against 34% of 13!'s, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on September 23, 2026 and September 26, 2026 respectively.
| Parameter | sumZ+ | 13! |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (839 ratings) | 4.3 (8.4K ratings) — better |
| Positive reviews | 53.1% of reviews — better | 34.2% of reviews |
| Number of ratings | 839 | 8.4K — better |
| Update frequency | Every 10 days | Every 10 days |
| Ads | Yes | No — better |
| 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 | 9.0 — better | 10.0 |
| Further details — not scored | ||
| Size | 47 MB | 97 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeffrey Stone | LEMOON BILISIM YAZILIM REKLAM VE PAZARLAMA |
Customer experience
sumZ+
13!
User reviews
sumZ+
From 839 App Store ratingsWhat we love
- 🚀 Great game
- 👍 Challenging and fun
- 💡 Helps relax and de-stress
- 👍 Addictive and engaging
- 🚀 Genius concept
Room to improve
- 🐛 Game ends prematurely
- 🐛 Ads too frequent and disruptive
- 🐛 Vibration cannot be turned off
- 🐛 Crashes and technical issues
- 💰 Crowns/purchases required to progress
13!
From 8.4K App Store ratingsWhat we love
- 👍 Fun and addictive game
- 💡 Keeps your mind sharp
- 🚀 Good puzzle game
Room to improve
- 🐛 Glitches and bugs
- 💰 Too many ads
- 🔋 App freezes and crashes
- 🤔 Confusing gameplay and lack of tutorial
Bugs and requests
sumZ+
Reported bugs
3 issues- Game not recognizing end of game
- Ads still showing after purchase
- Losing progress and high scores
Requested features
4 requests- Top scores/leaderboard
- Option to play own music
- Ability to undo accidental moves
- More game modes and variations
13!
Reported bugs
4 issues- Yellow screen issue
- Tiles not connecting properly
- Game freezing at certain levels
- Ads causing the app to crash or freeze
Requested features
4 requests- Add a tutorial to explain how to play
- Improve game stability and reduce bugs
- Reduce the number of ads or provide an ad-free option
- Add a way to track and share high scores
In-app purchases
sumZ+
- Buy 50 Crowns$0.99
- Buy 125 Crowns$1.99
- Unlock Ad Removal$3.99
Show 4 moreShow fewer
- Buy 350 crowns$4.99
- Buy 850 crowns$9.99
- Buy 2000 crowns$19.99
- Buy 6200 crowns$49.99
13!
- No Ads Product$0.99
- Hint Package 1$0.99
- Hint Package 2$4.99
Show 1 moreShow fewer
- Hint Package 3$8.99
