# sumZ+ vs 13!

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.

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.

## The numbers

| Metric | sumZ+ | 13! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (839 ratings)](https://appshunter.io/ios/app/sumz-plus/id1257973903/reviews) | **[4.3 (8.4K ratings)](https://appshunter.io/ios/app/13/id1313309508/reviews)** |
| Number of ratings | 839 | **8.4K** |
| Positive reviews | **53.1% of reviews** | 34.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | Every 10 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 47 MB | 97 MB |
| Requires iOS | **9.0** | 10.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeffrey Stone](https://appshunter.io/developer/1257973902) | [LEMOON BILISIM YAZILIM REKLAM VE PAZARLAMA](https://appshunter.io/developer/1425032013) |

## What reviewers say

### sumZ+

[App page](https://appshunter.io/ios/app/sumz-plus/id1257973903)

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.

**Highlights:** Connect like numbers, Create sums, Score-based gameplay, Addictive puzzle mechanics, Relaxing gameplay

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy 50 Crowns | $0.99 | one-time |
| Buy 125 Crowns | $1.99 | one-time |
| Unlock Ad Removal | $3.99 | one-time |
| Buy 350 crowns | $4.99 | one-time |
| Buy 850 crowns | $9.99 | one-time |
| Buy 2000 crowns | $19.99 | one-time |
| Buy 6200 crowns | $49.99 | one-time |

**What reviewers like**

- 🚀 Great game
- 👍 Challenging and fun
- 💡 Helps relax and de-stress
- 👍 Addictive and engaging
- 🚀 Genius concept

**What reviewers complain about**

- 🐛 Game ends prematurely
- 🐛 Ads too frequent and disruptive
- 🐛 Vibration cannot be turned off
- 🐛 Crashes and technical issues
- 💰 Crowns/purchases required to progress

**Reported bugs**

- Game not recognizing end of game
- Ads still showing after purchase
- Losing progress and high scores

**Requested features**

- Top scores/leaderboard
- Option to play own music
- Ability to undo accidental moves
- More game modes and variations


### 13!

[App page](https://appshunter.io/ios/app/13/id1313309508)

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.

**Highlights:** Tap and merge colorful squares, Reach the number 13, Match same colored tiles, Extremely challenging gameplay, Addictive puzzle experience

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads Product | $0.99 | one-time |
| Hint Package 1 | $0.99 | one-time |
| Hint Package 2 | $4.99 | one-time |
| Hint Package 3 | $8.99 | one-time |

**What reviewers like**

- 👍 Fun and addictive game
- 💡 Keeps your mind sharp
- 🚀 Good puzzle game

**What reviewers complain about**

- 🐛 Glitches and bugs
- 💰 Too many ads
- 🔋 App freezes and crashes
- 🤔 Confusing gameplay and lack of tutorial

**Reported bugs**

- Yellow screen issue
- Tiles not connecting properly
- Game freezing at certain levels
- Ads causing the app to crash or freeze

**Requested features**

- 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


## Frequently asked questions

### Is sumZ+ free?

sumZ+ is free to download, with in-app purchases available.

### Is 13! free?

13! is free to download, with in-app purchases available.

### Which has better reviews, sumZ+ or 13!?

13! is rated higher. sumZ+ averages 4.1 out of 5 from 839 ratings, while 13! averages 4.3 from 8.4K ratings.

### Do sumZ+ or 13! have ads?

sumZ+ shows ads; 13! does not.

### Which is updated more often, sumZ+ or 13!?

sumZ+ ships an update every 10 days, and 13! every 10 days. Most recently, sumZ+ was updated on September 23, 2026 and 13! on September 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*