Comparison

Wormax.io vs String.io

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Wormax.io

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
Read full description

In the mobile version of Wormax.io, you control a snake. Your goal is to make your snake gain the biggest mass and to reach the 1st place among other players on the arena. Be careful and don't run into other worms as you slither forward! This free mobile MMO is filled with tons of fun and competition. Play Wormax.io online against people from all over the world or computer in a single-user mode. Invite your best friends to slither together as cool and colorful worms in this free mobile MMO. Upgrade your worm and compete with other players for rating. Use active skills and boosters to survive in a hostile environment filled with other people and their worms. Have you ever played a classic Snake? Want some free funny games to play online? Welcome to the mobile version of the popular MMO game Wormax.io! Get addicted to the best snake game out there. Wormax.io is popular, interesting and easy to learn. Install Wormax.io and go for it! GRAND ONLINE MULTIPLAYER Play funny games against millions of people in this most addictive MMO! SINGLE-PLAYER MODE Compete against the computer and train your slither skills! USE ACTIVE SKILLS Gain your first 100 points in Wormax which will unlock the Instant Stop skill. Upon gaining 500 points, you'll get a temporary option of crossing other worms without being afraid of running into any of them. Stay alert as the skills' cooldown takes some time. HAVE FUN WITH FRIENDS Invite your best friends to play together on the same server against other players! COLLECT ACTION BOOSTERS Use various cool boosters increasing the mass of the worm, attracting food, and providing slither acceleration without losing points or make the worm's mass toxic and dangerous for the opponents. COMPETE WITH OTHER PLAYERS IN RATING Play the game more often. Grow your snake bigger. Build up your account rating and receive essence for passing to the next league. UPGRADE YOUR WORM Use essence to buy cool artifacts in the Shop and upgrade your worm. PLAY AS YOU LIKE The game also provides different fun modes. Control your worm’s action with an accelerometer! Thanks to these fun features, the game becomes interesting and action-packed! Let's play the best free online worm game! Try it out! What are you waiting for? Install Wormax.io now and enjoy!

About

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.

Highlights
  • Enclose areas to capture territory
  • Attack players by hitting tails
  • Unlock over 30 avatars
  • Minimalist graphics
  • Multiple control methods
Features
Read full description

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

Screenshots

Wormax.io4 screens
String.io4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Wormax.io versus String.io: the parameters behind the verdict, then further details
ParameterWormax.ioString.io
PriceFreeFree
Rating4.7 (4.6K ratings) — better4.5 (1.8K ratings)
Positive reviews84.8% of reviews — better58.4% of reviews
Number of ratings4.6K — better1.8K
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size211 MB339 MB
Age rating4+4+
DeveloperELYLAND INVESTMENT COMPANY LIMITEDMetajoy

Customer experience

Wormax.io

All ratings4,634 ratings
Positive91.5%
Neutral3.7%
Negative4.8%
Written reviews446 reviews
Positive84.8%
Neutral5.8%
Negative9.4%

String.io

All ratings1,776 ratings
Positive88.2%
Neutral4.8%
Negative7.0%
Written reviews510 reviews
Positive58.4%
Neutral7.1%
Negative34.5%

User reviews

Wormax.io

From 4.6K App Store ratings

What we love

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

Room to improve

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

String.io

From 1.8K App Store ratings

What we love

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

Room to improve

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

Bugs and requests

Wormax.io

Reported bugs

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

Requested features

4 requests
  • Team mode to play with friends
  • More free skin options
  • Customizable controls
  • Improved server stability

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

In-app purchases

14 purchases

Wormax.io

One-time14
  • 500 essence$1.99
  • Essence Boost x2$2.99
  • Extra life for 3days$3.99
Show 11 more
  • Premium skins$3.99
  • 1500 essence$4.99
  • Premium for 1 month$4.99
  • Premium for 12 month$4.99
  • Additional life$4.99
  • Essence Boost x8 & No Ads$8.99
  • 5000 essence$9.99
  • Extra life for 15 days$9.99
  • Growth Boost x4 & No Ads$14.99
  • Range Boost x4 & No Ads$14.99
  • 12000 essence$19.99
4 purchases

String.io

Subscriptions3
  • Subscribe For 1 Week3 Days trial$7.997 Days
  • Subscribe For 1 Month$19.991 Month
  • Subscribe For 1 Year$99.991 Year
One-time1
  • Remove Ads$1.99

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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