Atom Fusion vs Exponential Idle
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Atom Fusion
A casual tapping game where atoms fuse to create new elements. Research new atoms with a particle accelerator to discover all 118 elements of the periodic table.
- Atom fusion gameplay
- Discover all 118 elements
- Particle accelerator research
- Casual tapping mechanics
- Progressive discovery
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Atom Fusion is a simple tapping game in which atoms collide with each other and fuse into new ones. Using a particle accelerator, you can research new atoms and progress faster to discover all 118 elements in the periodic table.
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.
- Exponential growth mechanics
- Time progression
- Change of variables
- Buy upgrades
- Earn virtual money
- Unlock achievements
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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.
Screenshots
Verdict
The clearest difference is rating: Exponential Idle at 4.9 against Atom Fusion's 4.3. Exponential Idle also leads on ratings volume (4.1K vs 6) and iOS requirement (8.0 vs 11.0). Atom Fusion's advantage is ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). On price, in-app purchases, monetization model 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
Both are free to download. Atom Fusion sells 1 one-off in-app purchase and Exponential Idle sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Exponential Idle holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: Exponential Idle has 4.1K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 100% of Atom Fusion's written reviews are positive against 92% of Exponential Idle's, so the app with the better star average is not the one people write more warmly about.
Atom Fusion ships an update every 5 days, Exponential Idle every 3 weeks. Both last shipped on October 24, 2026.
| Parameter | Atom Fusion | Exponential Idle |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (6 ratings) | 4.9 (4.1K ratings) — better |
| Positive reviews | 100.0% of reviews — better | 91.9% of reviews |
| Number of ratings | 6 | 4.1K — better |
| Update frequency | Every 5 days — better | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 95 MB |
| Age rating | 4+ | 4+ |
| Developer | Dennis van Oosten | Gilles-Philippe Paille |
Customer experience
Atom Fusion
Exponential Idle
Bugs and requests
Atom Fusion
Not enough reviews yet to summarise bugs or 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
In-app purchases
Atom Fusion
- Remove Ads$0.99
Exponential Idle
- Donate$0.99
- Permanent Ad Reward$1.99
- Donate$1.99
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- Donate$3.99
Questions
Is Atom Fusion free?
Is Exponential Idle free?
Which has better reviews, Atom Fusion or Exponential Idle?
Do Atom Fusion or Exponential Idle have ads?
Which is updated more often, Atom Fusion or Exponential Idle?
Other comparisons
