Comparison

String.io vs Penguin Island

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

Head to head
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

About

Penguin Island

Features
Read full description

Penguin Island is a retro themed puzzle game where you have to find the penguin's missing eggs from the hints left on the puzzle grid.

Screenshots

String.io4 screens
Penguin Island2 screens

Verdict

The call

The clearest difference is in-app purchases: Penguin Island at none against String.io's 4. Penguin Island also leads on ads (none vs shown) and update cadence (every 4 days vs every 3 months). On price, device support and iOS requirement 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. String.io sells 4 in-app purchases, starting at $7.99 per 7 days. Penguin Island asks for nothing beyond the download.

UpkeepUpdate frequency

String.io ships an update every 3 months, Penguin Island every 4 days. The most recent releases landed on November 6, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
String.io versus Penguin Island: the parameters behind the verdict, then further details
ParameterString.ioPenguin Island
PriceFreeFree
Rating4.5 (1.8K ratings) — better—
Positive reviews58.4% of reviews—
Number of ratings1.8K — better—
Update frequencyEvery 3 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size339 MB18 MB
Age rating4+4+
DeveloperMetajoyCalum Maclellan

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

Penguin Island

Not enough reviews yet to summarise bugs or requests.

In-app purchases

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
None

Penguin Island

No in-app purchases

Questions

Is String.io free?
String.io is free to download, with in-app purchases available.
Is Penguin Island free?
Penguin Island is free to download, with no in-app purchases.
Do String.io or Penguin Island have ads?
String.io shows ads; Penguin Island does not.
Which is updated more often, String.io or Penguin Island?
String.io ships an update every 3 months, and Penguin Island every 4 days. Most recently, String.io was updated on November 6, 2026 and Penguin Island on October 28, 2026.

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