Comparison

Exponential Idle vs Sum Rush+

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

Head to head
About

Exponential Idle

Engage in a math-inspired incremental game where you strategically stack virtual money through exponential growth. Advance through time, make variable changes, and purchase upgrades to accelerate your earnings and unlock achievements.

Highlights
  • Exponential growth mechanics
  • Time progression
  • Change of variables
  • Buy upgrades
  • Earn virtual money
  • Unlock achievements
Features
Read full description

Play Exponential Idle, a math-inspired incremental game. Your goal is to stack up money by taking advantage of exponential growth. To do so, you have to step through time by tapping the equation or simply let the time follow its course. You can perform change of variables to accelerate the process, buy upgrades, get rewards, and unlock achievements while earning virtual money.

About

Sum Rush+

Features
Read full description

Tap two bubbles that add up to the target. That's the whole game. The catch is the board keeps filling. Bubbles fall from the top, and if they stack to the ceiling, you're done. Arithmetic is easy. Arithmetic while the screen fills up is a different feeling entirely. TWO WAYS TO PLAY Unlimited - the target is always 10. The pace moves in cycles: a calm stretch, then a rush, then a breather, each round harder than the last. It runs until the board beats you. If you're new, the first minute stays slow while you find your footing. Adventure - 1000 levels. Each one sets its own target, its own falling speed, and its own quota of pairs to clear. Early chapters stick to simple pairs. Later ones stop being polite about it. WHAT ELSE IS IN THERE - Three power-ups: freeze the board, blast a cluster, or clear every copy of one number - 19 achievements across both modes. A few are easy, a couple are genuinely mean - A daily global leaderboard, with Game Center sign-in if you want it - Nine languages - No sign-up, no email. You can play as a guest If something's broken or annoying, get in touch.

Screenshots

Exponential Idle4 screens
Sum Rush+4 screens

Verdict

The call

The clearest difference is in-app purchases: Sum Rush+ at none against Exponential Idle's 4. Sum Rush+ also leads on ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). Exponential Idle's advantage is iOS requirement (8.0 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. Exponential Idle sells 4 one-off in-app purchases. Sum Rush+ asks for nothing beyond the download.

UpkeepUpdate frequency

Exponential Idle ships an update every 3 weeks, Sum Rush+ every 5 days. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Exponential Idle versus Sum Rush+: the parameters behind the verdict, then further details
ParameterExponential IdleSum Rush+
PriceFreeFree
Rating4.9 (4.1K ratings) — better—
Positive reviews91.9% of reviews—
Number of ratings4.1K — better—
Update frequencyEvery 3 weeksEvery 5 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size95 MB185 MB
Age rating4+4+
DeveloperGilles-Philippe PailleBharat Sharma

Bugs and requests

Exponential Idle

Reported bugs

3 issues
  • Puzzle mini-games not loading correctly
  • Offline progress issues after updates
  • Occasional app crashes

Requested features

5 requests
  • More mini-games and challenges
  • Better explanations for advanced mechanics
  • Adjustable color schemes and visual customization
  • Improved offline progress tracking
  • Smoother performance and optimization

Sum Rush+

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Exponential Idle

One-time4
  • Donate$0.99
  • Permanent Ad Reward$1.99
  • Donate$1.99
Show 1 more
  • Donate$3.99
None

Sum Rush+

No in-app purchases

Questions

Is Exponential Idle free?
Exponential Idle is free to download, with in-app purchases available.
Is Sum Rush+ free?
Sum Rush+ is free to download, with no in-app purchases.
Do Exponential Idle or Sum Rush+ have ads?
Exponential Idle shows ads; Sum Rush+ does not.
Which is updated more often, Exponential Idle or Sum Rush+?
Exponential Idle ships an update every 3 weeks, and Sum Rush+ every 5 days. Most recently, Exponential Idle was updated on October 29, 2026 and Sum Rush+ on October 31, 2026.

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