# Sum Is vs Screw That

The clearest difference is in-app purchases: Sum Is at none against Screw That's 15. Screw That's advantage is update cadence (every 2 weeks vs every 4 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Screw That sells 15 one-off in-app purchases. Sum Is asks for nothing beyond the download.

Sum Is ships an update every 4 months, Screw That every 2 weeks. The most recent releases landed on October 8, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Sum Is | Screw That |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (1.2K ratings)](https://appshunter.io/ios/app/screw-that/id6737209682/reviews)** |
| Number of ratings | — | **1.2K** |
| Positive reviews | — | 48.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 43 MB | 219 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Vijay Kumar Meena](https://appshunter.io/developer/1502353944) | [ZPLAY (HK) TECHNOLOGY CO., LIMITED](https://appshunter.io/developer/1301067319) |

## What reviewers say

### Sum Is

[App page](https://appshunter.io/ios/app/sum-is/id1548187986)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Screw That

[App page](https://appshunter.io/ios/app/screw-that/id6737209682)

Engage your mind with a challenging mechanical puzzle game. Twist, unscrew, and solve intricate challenges involving wood, screws, and fasteners. Enjoy hundreds of levels, customize your experience, and relax with satisfying gameplay.

**Highlights:** Hundreds of puzzle levels, Twist and unscrew fasteners, Realistic woodworking animations, Customize puzzle skins and themes, Relaxing gameplay with calming sounds

**Features:** macOS Compatibility

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $0.99 | one-time |
| Coins Small Pack - 500 coins | $1.99 | one-time |
| PU Pack - 10 Bombs | $2.99 | one-time |
| Coins Medium Pack - 1000 coins | $2.99 | one-time |
| PU Pack - 10 Drills | $2.99 | one-time |
| PU Pack - 10 ScrewDrivers | $2.99 | one-time |
| PU Pack - 10 Hammers | $2.99 | one-time |
| special offer | $4.99 | one-time |
| Coins Big Pack - 2000 coins | $4.99 | one-time |
| PU Pack - 5 of each | $4.99 | one-time |
| remove_ads | $5.99 | one-time |
| Large Coin Pack | $9.99 | one-time |
| Remove Ads | $9.99 | one-time |
| Super Coin Pack | $19.99 | one-time |
| Mega Coin Pack | $34.99 | one-time |

**What reviewers like**

- 👍 Fun and relaxing gameplay
- 🚀 Easy to get into
- 💡 Challenging without being frustrating

**What reviewers complain about**

- 🔍 Unclear purpose of in-game currency (coins)
- ⏱️ Excessively long advertisements
- 🤔 Lack of explanation on how to use in-game items

**Reported bugs**

- Crashes or freezes after failed levels
- Incompatibility issues on older devices

**Requested features**

- Option to purchase items with in-game currency instead of watching ads
- Better explanation of in-game mechanics and currency usage


## Frequently asked questions

### Is Sum Is free?

Sum Is is free to download, with no in-app purchases.

### Is Screw That free?

Screw That is free to download, with in-app purchases available.

### Do Sum Is or Screw That have ads?

Both Sum Is and Screw That show ads.

### Which is updated more often, Sum Is or Screw That?

Sum Is ships an update every 4 months, and Screw That every 2 weeks. Most recently, Sum Is was updated on October 8, 2026 and Screw That on October 19, 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.*