Bacterias vs Collider
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Bacterias
Create unique monsters by injecting bacteria into creatures. Discover new species and expand your collection of bizarre beings. A simple yet engaging game for those who enjoy creature creation and collection.
- Inject bacteria into creatures
- Create unique monsters
- Discover new species
- Collect monsters
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Inject bacteria into creature to get monster !
Collider
A minimalist number puzzle game where you slide tiles to merge matching numbers. Aim to reach a target number by strategically combining tiles, with options for different grid sizes and an undo feature. Enjoy a distraction-free experience with smooth animations and haptic feedback.
- Tile sliding and merging
- Multiple grid sizes (4x4, 5x5)
- Undo last move functionality
- Clean, distraction-free design
- Smooth animations and haptic feedback
- Hidden surprise unlockable
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Collider is a minimal, satisfying number puzzle built for focus. Slide tiles across the board. When two matching numbers collide, they merge into one. Keep going until you hit the target — or run out of moves. Simple rules. Deep strategy. • Separate saved 4×4 and 5×5 games • A shared Daily Challenge board every day • Game Center global leaderboard • Eleven Game Center achievements • Progress statistics and personal bests • Undo your last move • Smooth animations, sound, and haptic feedback • Reach 2048 on 4×4 to unlock a hidden surprise No ads. No timers. No nonsense. Just the puzzle.
Screenshots
Verdict
The clearest difference is review sentiment: Collider at 100% against Bacterias's 42%. Collider also leads on rating (5.0 vs 3.9) and ads (none vs shown). Bacterias's advantage is price (Free vs $0.99) and ratings volume (210 vs 1). On in-app purchases 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
Bacterias is free to download; Collider costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Collider holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Bacterias has 210 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 42% of Bacterias's written reviews are positive against 100% of Collider's.
Bacterias ships an update every 3 months, Collider every 8 days. The most recent releases landed on October 25, 2026 and October 8, 2026 respectively.
| Parameter | Bacterias | Collider |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.9 (210 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 41.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 210 — better | 1 |
| Update frequency | Every 3 months | Every 8 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 253 MB | 2 MB |
| Age rating | 12+ | 4+ |
| Developer | Yso Corp | Luciditas LLC |
Customer experience
Bacterias
Collider
Bugs and requests
Bacterias
Reported bugs
7 issues- Monster gets too big in battle
- Monster falls through the ground
- Game lags heavily
- Game won't let users play
- Too many glitches
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- Info text gets too huge
- iPad battery drains fast
Requested features
9 requests- Add more animals (lion, elephant, zebra)
- Add decorated cages for monsters
- Add a battlefield to challenge other people
- Add more DNA
- Add more money to spend
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- Fix monster size in battles
- Fix ads frequency
- Add less ads
- Add more creatures
Collider
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Bacterias
No in-app purchases
Collider
No in-app purchases
Questions
Is Bacterias free?
Is Collider free?
Which has better reviews, Bacterias or Collider?
Do Bacterias or Collider have ads?
Which is updated more often, Bacterias or Collider?
Other comparisons
