String.io vs Ammo Run
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
String.io
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.
- Enclose areas to capture territory
- Attack players by hitting tails
- Unlock over 30 avatars
- Minimalist graphics
- Multiple control methods
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String.io is a brand new IO game! The goal is pretty simple. Just capture as much territory as possible! Take care! Your enemies are extremely smart! HOW TO PLAY ● Enclose an area with your string to capture new land. ● Attack other players by hitting their tails. FEATURES ● Over 30 colorful avatar to unlock ● Amazing minimalism graphics ● Up to 4 control methods to choose ● Online PVP coming soon Join this game and beat people all around the world! STRING.IO UNLIMITED SUBSCRIPTION: - The subscriptions are $7.99 weekly with 3 days FREE trial, $19.99 monthly, $99.99 annually. - During your subscriptions, you can get 10000 coins per day and double coins. - You can skip missions for the duration of your subscription. - Payment will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at leat 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period at the cost of the chosen subscription. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - No cancelation of the current subscription is allowed during active subscription period. - You can read privacy policy at http://www.metajoy.io/privacy.html and terms of use at http://www.metajoy.io/privacy.html - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that content. *Prices are equal to the value that "Apple's App Store Matrix" determines is the equivalent of the subscription price in$USD. Terms of Service http://www.metajoy.io/privacy.html Privacy Policy http://www.metajoy.io/privacy.html Questions? Ask: help@metajoy.io
Ammo Run
Defend your core in this endless wave tower defense game by keeping your turrets loaded with ammunition. Survive against increasing enemy waves, earn upgrades, and seal blast doors to enhance your survival chances. Enjoy fast-paced action across three difficulty levels and compare your performance on Game Center leaderboards.
- Endless wave tower defense gameplay
- Ammunition management for turrets
- Enemy wave survival
- Upgrade system
- Blast door sealing
- Three difficulty levels
- Game Center leaderboards
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Ammo Run is an endless wave tower defence game with a difference. Your only hope is to keep your defence turrets loaded with ammo. Keep the ammo flowing and hold out for as long as you can against growing waves of enemies. Earn upgrades and seal blast doors to improve you chances. Fast paced action with three levels of difficulty. Compare your scores with leaderboards on Game Center.
Screenshots
Verdict
The clearest difference is review sentiment: Ammo Run at 100% against String.io's 58%. Ammo Run also leads on in-app purchases (none vs 4) and iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. String.io sells 4 in-app purchases, starting at $7.99 per 7 days. Ammo Run asks for nothing beyond the download.
String.io ships an update every 3 months, Ammo Run every 5 months. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | String.io | Ammo Run |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (1.8K ratings) — better | — |
| Positive reviews | 58.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 1.8K — better | — |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 339 MB | 85 MB |
| Age rating | 4+ | 12+ |
| Developer | Metajoy | Christopher Wright |
Customer experience
String.io
Ammo Run
Bugs and requests
String.io
Reported bugs
3 issues- Game freezes at 24% loading
- Missions not registering as completed
- Inconsistent collision detection
Requested features
4 requests- Online multiplayer mode
- Ability to play with friends
- More levels and game modes
- Improved mission system
Ammo Run
Not enough reviews yet to summarise bugs or requests.
In-app purchases
String.io
- Subscribe For 1 Week3 Days trial$7.997 Days
- Subscribe For 1 Month$19.991 Month
- Subscribe For 1 Year$99.991 Year
- Remove Ads$1.99
Ammo Run
No in-app purchases









