Comparison

String.io vs Upward Bound

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

Upward Bound

Features
Read full description

A single misstep, and it’s a long way down... How high can you climb? Welcome to Upward Bound, the endless vertical playground where precision physics meets heart-pounding retro arcade action! Take control of a bouncy, smiling square hero and leap your way through a shifting gauntlet of neon platforms, gravity-defying boosters, and chaotic hazards. Developed by an 11 year old game design and Systemores LLC, Upward Bound combines easy-to-learn mechanics with nail-biting difficulty that will keep you tapping "Play Again" for just one more run. GAME MODES TO TEST YOUR REFLEXES CLASSIC MODE: The Endless Climb Master the physics of the bounce! Perfect your timing on shifting platforms that shrink as you climb higher. It’s you versus gravity in a peaceful yet increasingly tense ascent to the stars. FLOOR IS LAVA MODE: Beat the Heat! Unlocked at 500m in Classic. Speed is life! Searing, glowing lava is rising from the depths, and it scales in speed the higher you go. Make split-second decisions, find the optimal route, and climb fast or get toasted! SWARM MODE: Dodge the Critters! Unlocked at 700m in Lava. The sky is falling! Navigate a treacherous obstacle course while dodging a descending, wiggling swarm of hostile bugs. Keep your head on a swivel! BOSS BATTLE: Defeat the Bug King! Unlocked at 550m in Swarm. Face off against the insect monarch himself! The Bug King reigns at the top of the vertical frontier. Dodge his wiggling minions, time your landing on heavy Cannon Platforms, and fire explosive cannonballs to blast the King out of the sky! COOL ELEMENTS Interactive Neon Environments: Watch the backdrop transform as you climb from deep sky blues and rich cosmic purples into the dark, star-studded edges of space. Shifting Platform Types: Normal Ledges: Your trusty stepping stones. Moving Platforms: Shifting left and right to challenge your timing. Cloud Platforms: Crumbling, dissolving shelves that vanish under your weight and respawn later—keep moving! Bouncy Pink Pads: High-velocity springboards that launch you skyward with satisfying momentum! Cannon Platforms: Land on them to load and fire heavy cannonballs upward at bosses! Quick-Drop Mechanics: Tap Down to immediately slip through gaps and drop onto lower ledges, giving you absolute tactical control over your path. Global & Local Leaderboards: Track your personal bests offline or post your speed records to the privacy-friendly global cloud leaderboard to prove you're the ultimate climber. Vibrant Retro Aesthetics & Dynamic Haptics: Enjoy smooth particle trails, satisfying sound effects, and responsive visual micro-animations that make every jump feel incredibly premium. PRIVACY-FIRST GAMING No ads, no predatory tracking, and no hardware-linked telemetry. Just pure, unadulterated arcade fun. Your high scores, preferences, and custom settings stay on your device unless you choose to compete on the global board! The vertical frontier is waiting. Can you defeat the Bug King and conquer the summit? Download Upward Bound today and reach new heights!

Screenshots

String.io4 screens
Upward Bound4 screens

Verdict

The call

The clearest difference is in-app purchases: Upward Bound at none against String.io's 4. Upward Bound also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price 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

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. Upward Bound asks for nothing beyond the download.

Scorecard3 real differences · 7 level
String.io versus Upward Bound: the parameters behind the verdict, then further details
ParameterString.ioUpward Bound
PriceFreeFree
Rating4.5 (1.8K ratings) — better—
Positive reviews58.4% of reviews—
Number of ratings1.8K — better—
Update frequencyEvery 3 months—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size339 MB3 MB
Age rating4+4+
DeveloperMetajoySystemores LLC

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

Upward Bound

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

Upward Bound

No in-app purchases

Questions

Is String.io free?
String.io is free to download, with in-app purchases available.
Is Upward Bound free?
Upward Bound is free to download, with no in-app purchases.
Do String.io or Upward Bound have ads?
String.io shows ads; Upward Bound does not.

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