stac vs Hearth Island
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
stac
Read full descriptionHide 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/
Hearth Island
Read full descriptionHide full description
Start a focus session. When you finish, a tiny 3D island grows - and it keeps living while you're away. FOCUS. EARN. GROW A LIVING WORLD. Hearth Island turns the minutes you focus into something you can see. Set a timer, put the phone down, and do your work. Every focused minute earns one Spark. Spend them to plant trees, build cottages, adopt a companion, and raise whole new islands out of the sea. Nothing here is bought with money. Sparks are earned only by focusing - that is the whole point. A WORLD THAT LIVES ON ITS OWN - Real day and night, drifting clouds, and rain that ripples the sea - Four seasons that follow your real calendar - spring blossom, summer fireflies, autumn leaves that fall and gather, winter snow on every roof - Mochi, a companion who wanders the island, plays with a yarn ball, and naps in a little bed - Plants that grow a stage with every session you complete THE FOCUS THAT EARNS IT - Simple sessions - pick a length, start, and focus - Leave the app mid-session and it gently pauses instead of punishing you; a screen wake-lock keeps the phone awake while you work - Optional Focus Shield quiets notifications for the length of a session - Early ends still bank the minutes you focused - you are never punished for stopping GROW THE ISLAND - Plant flowers, bushes, pines, oaks and maples - Build cottages, cabins, a greenhouse, a lighthouse and a dock - Raise new land - Sunny Meadow, Quiet Cove, North Ridge - from open sea - The flagship moment: build the Bridge and a brand-new isle rises, "New area discovered!", with more ground to make your own FREE, AND ACTUALLY GENEROUS The whole loop - focus, earn, plant, build, grow - is free. You can fill a whole island without paying a cent. HEARTH PREMIUM Premium opens the full catalog - palms, campfires, wishing wells, cabins, greenhouses, lighthouses, companion pieces, and new islands as they arrive. Premium items still cost the Sparks you earn by focusing; money only opens the catalog, it never buys progress. $4.99/month, $29.99/year with a 7-day free trial, or $59.99 once for lifetime. Everything lives on your device. No account, no sign-up, and your island is never uploaded anywhere. Requires iOS 15 or later; the living 3D world needs a device with WebGL2 (iPhone 8 and later). ---------- Hearth Premium is available as a monthly ($4.99) or yearly ($29.99, with a 7-day free trial) auto-renewable subscription, or a one-time Lifetime purchase ($59.99). Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://starnova-io.github.io/hearth-island/terms.html Privacy Policy: https://starnova-io.github.io/hearth-island/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: Hearth Island at every 11 days against stac's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. stac sells 5 in-app purchases, starting at $2.99 per month and Hearth Island sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
stac ships an update every 2 months, Hearth Island every 11 days. Both last shipped on October 31, 2026.
| Parameter | stac | Hearth Island |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 11 days โ better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details โ not scored | ||
| Size | 42 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Ai To Mobile | Nhan Vo |
In-app purchases
stac
- STAC Plus Membership$2.991 Month
- Streak Freeze$0.99
- boost potion lite$0.99
- boost potion pro$1.19
Show 1 moreShow fewer
- Demotion Shield$1.99
Hearth Island
- Hearth Premium Monthly$4.991 Month
- Hearth Premium Yearly7 Days trial$29.991 Year
- Hearth Premium Lifetime$59.99









