# stac: Focus Timer, Build World — Turn Focus to Visible Progress

> Turn Focus to Visible Progress (iPhone/iPad app by Ai To Mobile.)

- Source: https://appshunter.io/ios/app/stac-focus-timer-build-world/id6764253760 (this page in markdown: same URL + `.md`)
- Developer: [Ai To Mobile](https://appshunter.io/developer/1475589426)
- Category: Productivity, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 43 MB
- Languages: American English
- Released: 2026-06-06
- Data updated: 2026-08-27
- User reviews in markdown: https://appshunter.io/ios/app/stac-focus-timer-build-world/id6764253760/reviews.md

## What is stac?

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/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| STAC Plus Membership | $2.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Demotion Shield | $1.99 | one-time |
| Streak Freeze | $0.99 | one-time |
| boost potion pro | $1.19 | one-time |
| boost potion lite | $0.99 | one-time |



## Version history (last 2 releases)

### 1.0.6 — 2026-06-12

- Friend invitation feature modified.
- Edit statistics page

### 1.0.4 — 2026-06-06

No release notes.

## Apps similar to stac

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [DayClock: Circular Scheduler](https://appshunter.io/ios/app/dayclock-circular-scheduler/id6760689423) | 5.0 (1) | Free | Productivity |
| [Sticky-note Calendar - Sthicky](https://appshunter.io/ios/app/sticky-note-calendar-sthicky/id6768637114) | — | Free | Productivity |
| [STUDEE](https://appshunter.io/ios/app/studee/id6756905629) | — | Free | Productivity |
| [EmailZap: Smart inbox briefing](https://appshunter.io/ios/app/emailzap-smart-inbox-briefing/id6767800301) | 4.0 (2) | Free | Productivity |
| [View on Wall: AR Deco Planner](https://appshunter.io/ios/app/view-on-wall-ar-deco-planner/id6781761075) | — | Free | Productivity |
| [Pomolings - Pomodoro Timer](https://appshunter.io/ios/app/pomolings-pomodoro-timer/id6758032284) | 5.0 (1) | Free | Productivity |

## More apps by Ai To Mobile

- [노벨나라 - 로맨스 로판 판타지 무협 웹소설](https://appshunter.io/ios/app/id6800233841)

All apps by Ai To Mobile: https://appshunter.io/developer/1475589426

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*