# Wormax.io vs String.io

The clearest difference is monetization model: Wormax.io at free with in-app purchases against String.io's subscription. Wormax.io also leads on review sentiment (85% vs 58%) and update cadence (every 3 weeks vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Wormax.io sells 14 one-off in-app purchases and String.io sells 4 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Wormax.io holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 4.6K and 1.8K respectively. Written reviews point the same way: 85% of Wormax.io's written reviews are positive against 58% of String.io's.

Wormax.io ships an update every 3 weeks, String.io every 3 months. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Wormax.io | String.io |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (4.6K ratings)](https://appshunter.io/ios/app/wormaxio/id1166874296/reviews)** | [4.5 (1.8K ratings)](https://appshunter.io/ios/app/stringio/id1243426580/reviews) |
| Number of ratings | **4.6K** | 1.8K |
| Positive reviews | **84.8% of reviews** | 58.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 211 MB | 339 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ELYLAND INVESTMENT COMPANY LIMITED](https://appshunter.io/developer/816221269) | [Metajoy](https://appshunter.io/developer/1436156282) |

## What reviewers say

### Wormax.io

[App page](https://appshunter.io/ios/app/wormaxio/id1166874296)

Control a snake, grow its mass, and compete against other players worldwide in this free mobile MMO. Use active skills and boosters to survive and climb the leaderboards. Play with friends or against the computer in various fun modes.

**Highlights:** Multiplayer online battles, Single-player mode against AI, Unlockable active skills, Collect action boosters, Compete in player ratings, Upgrade worm with artifacts

**Features:** Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 500 essence | $1.99 | one-time |
| Essence Boost x2 | $2.99 | one-time |
| Extra life for 3days | $3.99 | one-time |
| Premium skins | $3.99 | one-time |
| 1500 essence | $4.99 | one-time |
| Premium for 1 month | $4.99 | one-time |
| Premium for 12 month | $4.99 | one-time |
| Additional life | $4.99 | one-time |
| Essence Boost x8 & No Ads | $8.99 | one-time |
| 5000 essence | $9.99 | one-time |
| Extra life for 15 days | $9.99 | one-time |
| Growth Boost x4 & No Ads | $14.99 | one-time |
| Range Boost x4 & No Ads | $14.99 | one-time |
| 12000 essence | $19.99 | one-time |

**What reviewers like**

- 🚀 Fast and addictive gameplay
- 👍 Variety of skins and power-ups
- 🎨 Vibrant and colorful graphics
- 💡 Unique mechanics like invisibility and stop

**What reviewers complain about**

- 🐛 Frequent crashes and server issues
- 🔋 Excessive ads and in-app purchases
- 🕹️ Clunky and unresponsive controls
- 🤖 Overwhelming presence of bots

**Reported bugs**

- Account progress being lost or reset
- Inability to respawn after watching ads
- Lag and freezing during gameplay
- Incompatibility issues on certain devices

**Requested features**

- Team mode to play with friends
- More free skin options
- Customizable controls
- Improved server stability


### 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


## Frequently asked questions

### Is Wormax.io free?

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

### Is String.io free?

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

### Which has better reviews, Wormax.io or String.io?

Wormax.io is rated higher. Wormax.io averages 4.7 out of 5 from 4.6K ratings, while String.io averages 4.5 from 1.8K ratings.

### Do Wormax.io or String.io have ads?

Both Wormax.io and String.io show ads.

### Which is updated more often, Wormax.io or String.io?

Wormax.io ships an update every 3 weeks, and String.io every 3 months. Most recently, Wormax.io was updated on October 9, 2026 and String.io on October 7, 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.*