# String.io vs Flip Rock

The clearest difference is review sentiment: Flip Rock at 100% against String.io's 58%. Flip Rock also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 4). String.io's advantage is ratings volume (1.8K vs 5) and device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. String.io sells 4 in-app purchases, starting at $7.99 per 7 days. Flip Rock asks for nothing beyond the download.

Flip Rock holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: String.io has 1.8K ratings behind it against 5, 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 100% of Flip Rock's.

## The numbers

| Metric | String.io | Flip Rock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (1.8K ratings)](https://appshunter.io/ios/app/stringio/id1243426580/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/flip-rock/id6773431656/reviews)** |
| Number of ratings | **1.8K** | 5 |
| Positive reviews | 58.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | — |
| Monetization | Subscription | **Free** |
| Size | 339 MB | 44 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Metajoy](https://appshunter.io/developer/1436156282) | [Chip Keyes](https://appshunter.io/developer/6773431658) |

## 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


### Flip Rock

[App page](https://appshunter.io/ios/app/flip-rock/id6773431656)

Discover hidden creatures and fossils by flipping a virtual rock each day. Build a collection in your field guide with real facts about each find. Enjoy a calm, curiosity-driven experience without timers or pressure.

**Highlights:** Daily rock flip, Discover critters and fossils, Build a field guide, Learn real facts, Vintage pixel art, No timers or pressure

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

**In-app purchases:** none


## Frequently asked questions

### Is String.io free?

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

### Is Flip Rock free?

Flip Rock is free to download, with no in-app purchases.

### Which has better reviews, String.io or Flip Rock?

Flip Rock is rated higher. String.io averages 4.5 out of 5 from 1.8K ratings, while Flip Rock averages 5.0 from 5 ratings.

### Do String.io or Flip Rock have ads?

String.io shows ads; Flip Rock does not.

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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.*