# Master One vs TURN

The clearest difference is price: Master One at Free against TURN's $1.99. Master One also leads on iOS requirement (16.6 vs 18.0). TURN's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, ratings volume and device support there is nothing between them.

Master One is free to download; TURN costs $1.99 up front. Master One sells 1 one-off in-app purchase. TURN asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Master One against 5.0 for TURN. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Master One ships an update every 2 months, TURN every 3 days. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Master One | TURN |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/master-one-habit-builder/id6504889928/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/turn-focus-timer/id6760718734/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 3 MB | 9 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mary Ogawa](https://appshunter.io/developer/1615657857) | [Junhong Park](https://appshunter.io/developer/1585298049) |

## What reviewers say

### Master One

[App page](https://appshunter.io/ios/app/master-one-habit-builder/id6504889928)

This app guides you in building habits by focusing on one at a time. You can set custom durations, track your progress and streaks, and review your completed habits. It offers a clean, distraction-free interface with options to archive or restart habits.

**Highlights:** One habit focus, Custom habit durations, Streak and history tracking, Mastered habits archive, Minimalist design, Archive and restart habits, Strict mode for perfect streaks

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LIFE_PURCHASE | $0.99 | one-time |


### TURN

[App page](https://appshunter.io/ios/app/turn-focus-timer/id6760718734)

This app offers a unique, minimalist approach to time management. Simply tilt your phone to select a preset focus or break duration, then tap to start. Sessions conclude when you decide they're finished, promoting uninterrupted work and mindful breaks.

**Highlights:** Tilt-based time selection, Customizable presets, Manual session ending, Automatic logging, Filtered records, Dark and light themes

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Master One free?

Master One is free to download, with in-app purchases available.

### Is TURN free?

TURN costs $1.99, with no in-app purchases.

### Which has better reviews, Master One or TURN?

Master One and TURN are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Master One or TURN have ads?

Master One shows ads; TURN does not.

### Which is updated more often, Master One or TURN?

Master One ships an update every 2 months, and TURN every 3 days. Most recently, Master One was updated on September 24, 2026 and TURN on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*