Comparison

Bubble Grotto vs Mega Donut

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

Head to head
About

Bubble Grotto

Features
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Can you get Buster out of the Grotto? Guide Buster through a series of increasingly challenging levels, dodging hazards and controlling his size to reach each exit. But getting there isn't enough. Buster has to be the right size to escape. Too small? He can't get out. Too big? He can't get out — and risks bursting. Get it just right and Buster can escape to face the next challenge. Master every level, make it all the way out of the Grotto and Buster earns the ultimate prize — becoming King Bubble Buster. FEATURES • Guide Buster through increasingly challenging levels • Grow and shrink Buster to find the perfect escape size • Dodge obstacles and dangerous hazards • Balance size, movement and timing • Simple controls with skill-based physics gameplay • Increasing challenge as you progress • Complete every level and escape the Grotto • Become King Bubble Buster! Can you master every level and lead Buster to freedom?

About

Mega Donut

Features
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Drop cute googly-eyed donuts into the jar. When two identical donuts touch, they merge into a bigger one — all the way up to the legendary donut. Keep the jar from overflowing and chase huge combos. • Simple one-touch drop, juicy physics • Zen mode + Daily Challenge • Collect all 10 donuts, beat your best score • Colorblind mode, larger text, reduced motion • 100% offline Ā· no ads Ā· no in-app purchases

Screenshots

Bubble Grotto3 screens
Mega Donut4 screens

Verdict

The call

The clearest difference is ads: Mega Donut at none against Bubble Grotto's shown. Mega Donut also leads on update cadence (every 5 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Bubble Grotto ships an update every 3 months, Mega Donut every 5 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Bubble Grotto versus Mega Donut: the parameters behind the verdict, then further details
ParameterBubble GrottoMega Donut
PriceFreeFree
Update frequencyEvery 3 monthsEvery 5 days — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size187 MB5 MB
Age rating4+4+
DeveloperJohn McArthurDentagram

In-app purchases

None

Bubble Grotto

No in-app purchases

None

Mega Donut

No in-app purchases

Questions

Is Bubble Grotto free?
Bubble Grotto is free to download, with no in-app purchases.
Is Mega Donut free?
Mega Donut is free to download, with no in-app purchases.
Do Bubble Grotto or Mega Donut have ads?
Bubble Grotto shows ads; Mega Donut does not.
Which is updated more often, Bubble Grotto or Mega Donut?
Bubble Grotto ships an update every 3 months, and Mega Donut every 5 days. Most recently, Bubble Grotto was updated on October 28, 2026 and Mega Donut on October 25, 2026.

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