Comparison

Idle Universe vs Sync Ball

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

Head to head
About

Idle Universe

Tap to gather matter and create interstellar objects, from particles to galaxies. Objects automatically generate more matter, allowing for endless universe expansion. Unlock divine powers, upgrade objects, and utilize special abilities to grow your cosmic creation.

Highlights
  • Create 31 interstellar objects
  • Unlock 24 Divine Powers
  • Upgrade objects with multiple options
  • Obtain Dark Matter for special abilities
  • Gain Antimatter via prestige for permanent upgrades
  • Compete on leaderboards
  • Earn daily rewards and achievements
Features
Read full description

Create your own universe in this new addictive idle game! First, you have to gather matter yourself by tapping; but once you've got enough matter to create a couple of objects in your universe, these will produce more matter automatically by colliding. Features: • Create many different interstellar objects - from tiny particles to your own planets, galaxies and even more! • Unlock Divine Powers, powerful permanent upgrades! • Speed up the growth of your universe with even more powerful Evolvements, transcendental upgrades that persist even through restarts! • Upgrade all of your objects in various ways! You will need to find a strategy that fits your playstyle to succeed in the late-game! • Obtain Dark Matter and use special abilities like Augmented Production and Tapping! • Get even bigger with prestige! Every time you restart the game, you will obtain Antimatter, which can be used to buy permanent super upgrades! • Join the competition with a global leaderboard! • Get daily rewards! • Earn Achievements, not just for the sake of it, but to increase your production even further! There're plenty of opportunities in the game - you can play for weeks and never get bored! Try our new idle game and create your very own universe :)

About

Sync Ball

This game allows you to increase the number and level of your balls, which in turn boosts your in-game income. The visual experience is designed to be relaxing and hypnotic.

Highlights
  • Increase ball count
  • Level up balls
  • Boost in-game income
  • Hypnotic visuals
  • Relaxing experience
Features
Read full description

Increase the number and level of your balls! In return, your income will increase and the resulting image will relax you!

Screenshots

Idle Universe4 screens
Sync Ball4 screens

Verdict

The call

Idle Universe and Sync Ball both sit at 4.3 stars, but that hides the real split: 65% of Idle Universe's written reviews are positive against 18% of Sync Ball's. Sync Ball's advantage is in-app purchases (none vs 7) and update cadence (every 5 days vs every 3 weeks). On price, rating, ratings volume and ads 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. Idle Universe sells 7 one-off in-app purchases. Sync Ball asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sync Ball holds the better App Store score, 4.4 against 4.3. Both are backed by a comparable volume of ratings — 1.5K and 1.2K respectively. Written reviews complicate that: 65% of Idle Universe's written reviews are positive against 18% of Sync Ball's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Idle Universe ships an update every 3 weeks, Sync Ball every 5 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Idle Universe versus Sync Ball: the parameters behind the verdict, then further details
ParameterIdle UniverseSync Ball
PriceFreeFree
Rating4.3 (1.5K ratings)4.4 (1.2K ratings) — better
Positive reviews65.2% of reviews — better17.5% of reviews
Number of ratings1.5K — better1.2K
Update frequencyEvery 3 weeksEvery 5 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size297 MB172 MB
Age rating4+4+
DeveloperDominik StallmannHyperlab Games

Customer experience

Idle Universe

All ratings1,516 ratings
Positive82.2%
Neutral9.2%
Negative8.6%
Written reviews299 reviews
Positive65.2%
Neutral15.4%
Negative19.4%

Sync Ball

All ratings1,164 ratings
Positive86.3%
Neutral3.5%
Negative10.1%
Written reviews40 reviews
Positive17.5%
Neutral7.5%
Negative75.0%

User reviews

Idle Universe

From 1.5K App Store ratings

What we love

  • 👍 Organized and easy to use
  • 🚀 Efficient progression system
  • 💡 Unique and engaging concept
  • 🎨 Good graphics and visuals

Room to improve

  • 🐛 Bugs and crashes
  • 🔋 Slow progress without watching ads
  • 🤖 Forced Google account login
  • 🔍 Unclear game mechanics

Sync Ball

From 1.2K App Store ratings

What we love

  • 👍 Satisfying gameplay
  • 💡 Interesting concept

Room to improve

  • 🐛 Bugs and glitches
  • 🔍 Lack of content/levels
  • 📺 Excessive ads
  • 🔍 Repetitive gameplay

Bugs and requests

Idle Universe

Reported bugs

4 issues
  • Prestige button not working
  • Ads not providing expected rewards
  • Frequent crashes and freezes
  • Incorrect offline progress tracking

Requested features

4 requests
  • Offline progress tracking
  • More prestige layers and upgrades
  • Better optimization for larger screens
  • Improved tutorial and explanations

Sync Ball

Reported bugs

3 issues
  • Game not starting
  • Buttons not working
  • Loss of progress after updates

Requested features

3 requests
  • More levels and content
  • Improved performance and stability
  • Reduced ads or paid ad-free option

In-app purchases

7 purchases

Idle Universe

One-time7
  • 250 Dark Matter$3.99
  • Double Antimatter Gains$4.99
  • +100% Transcendence Exp$4.99
Show 4 more
  • Remove All Ads$8.99
  • 1000 Dark Matter$9.99
  • 2500 Dark Matter$24.99
  • 10000 Dark Matter$69.99
None

Sync Ball

No in-app purchases

Questions

Is Idle Universe free?
Idle Universe is free to download, with in-app purchases available.
Is Sync Ball free?
Sync Ball is free to download, with no in-app purchases.
Which has better reviews, Idle Universe or Sync Ball?
Sync Ball is rated higher. Idle Universe averages 4.3 out of 5 from 1.5K ratings, while Sync Ball averages 4.4 from 1.2K ratings.
Do Idle Universe or Sync Ball have ads?
Both Idle Universe and Sync Ball show ads.
Which is updated more often, Idle Universe or Sync Ball?
Idle Universe ships an update every 3 weeks, and Sync Ball every 5 days. Most recently, Idle Universe was updated on October 26, 2026 and Sync Ball on October 24, 2026.

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