Comparison

World Button vs Rot & Ferment

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

Head to head
About

World Button

Features
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Tap the button. Raise the world counter. World Button is a simple, addictive tapping game built around one giant button and one shared global counter. Every tap you make adds to a worldwide tally counted by players everywhere. Tap fast, climb milestones, unlock button skins, chase achievements, and watch the global number rise in real time. No complicated rules. No account. No sign-up. Just tap. WHAT YOU DO • Tap the button to increase the global counter • Add your taps to a shared worldwide total • Track your lifetime taps and live taps-per-second • Push for new personal records and global milestones UNLOCK 50+ BUTTON SKINS Collect button skins as you reach new milestones, including the Earth, the Moon, Pi, crowns, dragons, and more. CHASE ACHIEVEMENTS Complete 30 achievements across tap milestones, speed challenges, and world records. Think you can tap 50 times per second? We genuinely do not think it is possible. SPIN THE PRIZE WHEEL Spin for tap bonuses and exclusive wheel-only button skins. Some skins can only be unlocked from the prize wheel. SATISFYING TAP FEEL Every tap comes with clean click sounds and haptic feedback, making each press feel crisp and satisfying. World Button is free to play, easy to start, and weirdly hard to stop. Download now and add your taps to the world.

About

Rot & Ferment

Features
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Most idle games make you wait because waiting is the monetization lever. Rot & Ferment makes you wait because that's what fermentation actually is. You run a small cellar: a few crocks, jars, and barrels, and a rotating cast of things worth aging - sourdough, kimchi, sauerkraut, yoghurt, kefir, tomme, cider, wine. Start a batch, and it needs real time. Minutes for a quick ferment, hours overnight, a full day for something worth the wait. THE DECISION ISN'T "WHEN IS IT DONE" - IT'S "WHAT DESERVES THIS VESSEL RIGHT NOW" Every batch rises in value, peaks, then slowly drifts past its best. Pull it early for safe, modest money. Hold it to the peak for the real payoff. Forget about it, and it doesn't spoil to nothing - it just costs you the upside. Nothing in this cellar punishes you for living your life. Each recipe leans one of two ways: • Safe - a wide, forgiving window. Never loses money, whenever you get back to it. • Greedy - a narrow peak and a steep drop-off. Higher reward, if you're actually on time. That choice repeats across six absence lengths, from "checking my phone right now" to "see you in the morning" - so there's always a right answer for how long you're actually going to be gone. BUILD THE CELLAR THAT LETS YOU AGE MORE Early recipes are ready in minutes. The long, valuable ferments - the tomme, the wine - are locked behind upgrades: more crocks, a cold cellar, humidity control. Every upgrade widens a window or slows a decay, so the game never turns into "wait less, click more." It turns into "cellar space is scarce, spend it well." Offline the whole time? Your batches keep aging without you. Come back to a full report of what happened while you were away. No forced ads, no pay-to-skip pressure. If a boost ever helps, it's your call, not the game's.

Screenshots

World Button4 screens
Rot & Ferment4 screens

Verdict

The call

The clearest difference is in-app purchases: World Button at none against Rot & Ferment's 5. Rot & Ferment's advantage is update cadence (every 2 days vs every 4 days). On price, ads, 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. Rot & Ferment sells 5 one-off in-app purchases. World Button asks for nothing beyond the download.

UpkeepUpdate frequency

World Button ships an update every 4 days, Rot & Ferment every 2 days. The most recent releases landed on September 19, 2026 and September 17, 2026 respectively.

Scorecard2 real differences Ā· 4 level
World Button versus Rot & Ferment: the parameters behind the verdict, then further details
ParameterWorld ButtonRot & Ferment
PriceFreeFree
Update frequencyEvery 4 daysEvery 2 days — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size220 MB154 MB
Age rating4+12+
DeveloperCelestial Pug LLCNils Rohwer

In-app purchases

None

World Button

No in-app purchases

5 purchases

Rot & Ferment

One-time5
  • Time skip$0.99
  • Hire a trusted carter$0.99
  • Buy a crock$1.99
Show 2 more
  • Remove ads$2.99
  • Permanent x2 income$4.99

Questions

Is World Button free?
World Button is free to download, with no in-app purchases.
Is Rot & Ferment free?
Rot & Ferment is free to download, with in-app purchases available.
Do World Button or Rot & Ferment have ads?
Both World Button and Rot & Ferment show ads.
Which is updated more often, World Button or Rot & Ferment?
World Button ships an update every 4 days, and Rot & Ferment every 2 days. Most recently, World Button was updated on September 19, 2026 and Rot & Ferment on September 17, 2026.

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