# String.io vs Io Ninja Games

The clearest difference is monetization model: Io Ninja Games at free with in-app purchases against String.io's subscription. Io Ninja Games also leads on iOS requirement (11.0 vs 15.0). String.io's advantage is rating (4.5 vs 4.1) and update cadence (every 3 months vs every 13 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. String.io sells 4 in-app purchases, starting at $7.99 per 7 days and Io Ninja Games sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

String.io holds the better App Store score, 4.5 against 4.1. That said, the two scores are not equally well evidenced: String.io has 1.8K ratings behind it against 53, so its average is the more settled of the two. Written reviews point the same way: 58% of String.io's written reviews are positive against 40% of Io Ninja Games's.

String.io ships an update every 3 months, Io Ninja Games every 13 months. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | String.io | Io Ninja Games |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.8K ratings)](https://appshunter.io/ios/app/stringio/id1243426580/reviews)** | [4.1 (53 ratings)](https://appshunter.io/ios/app/io-ninja-games-fun-slice/id1297481453/reviews) |
| Number of ratings | **1.8K** | 53 |
| Positive reviews | **58.4% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 13 months |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 339 MB | 33 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Metajoy](https://appshunter.io/developer/1436156282) | [Eugene Mikhalevskiy](https://appshunter.io/developer/543927675) |

## What reviewers say

### String.io

[App page](https://appshunter.io/ios/app/stringio/id1243426580)

Capture territory by enclosing areas with your string. Attack opponents by hitting their tails. Unlock avatars and enjoy minimalist graphics in this competitive .io game.

**Highlights:** Enclose areas to capture territory, Attack players by hitting tails, Unlock over 30 avatars, Minimalist graphics, Multiple control methods

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscribe For 1 Week | $7.99 | per 7 days |
| Subscribe For 1 Month | $19.99 | per month |
| Subscribe For 1 Year | $99.99 | per year |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 🚀 Fast and addictive gameplay
- 👍 Variety of skins and characters
- 💡 Creative game concept
- 🎨 Colorful and visually appealing

**What reviewers complain about**

- 🔍 Opponents are AI, not real players
- 💰 Expensive in-app purchases for skins
- 📢 Excessive ads and ad interruptions
- 🐛 Occasional crashes and glitches

**Reported bugs**

- Game freezes at 24% loading
- Missions not registering as completed
- Inconsistent collision detection

**Requested features**

- Online multiplayer mode
- Ability to play with friends
- More levels and game modes
- Improved mission system


### Io Ninja Games

[App page](https://appshunter.io/ios/app/io-ninja-games-fun-slice/id1297481453)

Engage in a fast-paced slicing game where you defend against incoming paper boxes. Test your reaction time and slicing skills to achieve a high score. Enjoy this addictive ninja-themed game with simple controls and colorful graphics.

**Highlights:** Slicing action gameplay, Defend against paper boxes, High score challenges, Bright and colorful 2D graphics, Offline play (no wifi needed), Smooth one-touch controls

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is String.io free?

String.io is free to download, with in-app purchases available.

### Is Io Ninja Games free?

Io Ninja Games is free to download, with in-app purchases available.

### Which has better reviews, String.io or Io Ninja Games?

String.io is rated higher. String.io averages 4.5 out of 5 from 1.8K ratings, while Io Ninja Games averages 4.1 from 53 ratings.

### Do String.io or Io Ninja Games have ads?

Both String.io and Io Ninja Games show ads.

### Which is updated more often, String.io or Io Ninja Games?

String.io ships an update every 3 months, and Io Ninja Games every 13 months. Most recently, String.io was updated on October 16, 2026 and Io Ninja Games on October 11, 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.*