Comparison

Kokoon Focus vs stac

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

Head to head
About

Kokoon Focus

Enhance your concentration with timed focus sessions that reward you with unique collectible creatures. The longer you focus, the rarer the creatures you can hatch and evolve, encouraging consistent productivity.

Highlights
  • Timed focus sessions
  • Collectible creature hatching
  • Creature evolution and fusion
  • Streak tracking
  • Live Activity on Lock Screen
  • Unlockable regions and variants
Read full description

Kokoon Focus turns your focus sessions into something to look forward to. Set a timer, put your phone down, and focus. When the session ends, an egg hatches — revealing a collectible creature unique to that session. The longer you focus, the rarer the creatures you unlock. COLLECT & DISCOVER • 60 unique creatures across 5 regions: Japanese, Americas, European, African, and Fantasy • Standard, Gold, Crimson, and Void variants • Fuse three matching creatures to evolve to a rarer form • Unlock new regions as you build your streak STAY ON TRACK • 25, 45, and 60 minute focus sessions • Live Activity on your Lock Screen and Dynamic Island • Streak tracking to keep your momentum • Session stats and achievements The best focus session is one you're excited to finish.

About

stac

Features
Read full description

Intro See your focus turn into visible progress. stac is a visual focus timer that helps you stay focused and watch your world grow over time. Simple Focus, No Friction Start instantly. No setup, no friction. - Clean and minimal design - Track study and work sessions - Distraction-free experience A flexible focus timer for study, work, and daily habits. (Pomodoro-style supported) Turn Time into Progress Every 10 minutes becomes progress. 10 minutes of focus = 1 Brick - Earn bricks and build your world - See your effort come to life Build Your World Your focus creates change. - Progress from early stages to advanced environments - Experience visible growth as you stay consistent - Feel your progress, not just track it Stay Consistent Build habits that last. - Track your streaks - Unlock achievements - Grow through leagues and levels Focus Together You are not alone. - Join global progress - Contribute alongside others - Stay motivated through shared effort Privacy First - No detailed study content shared - Minimal public data - Safe and pressure-free environment Built for Real Life Use it as a study timer, productivity timer, or habit tracker. Ideal for students, professionals, and anyone who prefers a simple, distraction-free focus experience. Get Started Focus better. Build your world. Stack your time with stac. Privacy Policy: https://aitomglobal.biz/api/users/legal/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Kokoon Focus4 screens
stac4 screens

Verdict

The call

The clearest difference is in-app purchases: Kokoon Focus at none against stac's 5. Kokoon Focus also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). stac's advantage is iOS requirement (15.0 vs 18.0). 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. stac sells 5 in-app purchases, starting at $2.99 per month. Kokoon Focus asks for nothing beyond the download.

UpkeepUpdate frequency

Kokoon Focus ships an update every 3 weeks, stac every 2 months. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 5 level
Kokoon Focus versus stac: the parameters behind the verdict, then further details
ParameterKokoon Focusstac
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size659 MB42 MB
Age rating4+4+
DeveloperIGNACIO ANDRES VINKE FERNANDEZAi To Mobile

In-app purchases

None

Kokoon Focus

No in-app purchases

5 purchases

stac

Subscriptions1
  • STAC Plus Membership$2.991 Month
One-time4
  • Streak Freeze$0.99
  • boost potion lite$0.99
  • boost potion pro$1.19
Show 1 more
  • Demotion Shield$1.99

Questions

Is Kokoon Focus free?
Kokoon Focus is free to download, with no in-app purchases.
Is stac free?
stac is free to download, with in-app purchases available.
Do Kokoon Focus or stac have ads?
stac shows ads; Kokoon Focus does not.
Which is updated more often, Kokoon Focus or stac?
Kokoon Focus ships an update every 3 weeks, and stac every 2 months. Most recently, Kokoon Focus was updated on October 7, 2026 and stac on October 25, 2026.

Other comparisons