Master One vs TURN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Master One
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.
- One habit focus
- Custom habit durations
- Streak and history tracking
- Mastered habits archive
- Minimalist design
- Archive and restart habits
- Strict mode for perfect streaks
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Master One helps you focus on building habits one at a time. Set your own duration, track streaks, update your progress, and celebrate every success. Features: ◆ One Habit at a Time: Simplify your focus for better results. ◆ Custom Durations: Choose how long to work on each habit. ◆ Streak & History Tracking: Monitor progress, edit past entries, and stay on track. ◆ Mastered Habits: Reflect on your growth with a list of completed habits. ◆ Clean, Minimal Design: Beautiful, simple, and distraction-free. ◆ Archive & Restart – Pause habits anytime and pick them up later. ◆ Strict Mode – Only count progress with perfect streaks—no gaps allowed. ◆ Themes – Personalize your experience with different styles.
TURN
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.
- Tilt-based time selection
- Customizable presets
- Manual session ending
- Automatic logging
- Filtered records
- Dark and light themes
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Tilt to choose. Tap to begin. TURN removes every step between you and focus. No lists to scroll. No sliders to drag. Tilt your phone toward one of four directions, each mapped to a preset time, and tap the compass to start. Once you start, there's nothing to look at. The timer keeps running no matter how you set the phone down. When it reaches zero, it doesn't end on its own — it keeps going until you say done. Not "stop at 25 minutes," but "stop when I'm finished." Breaks work the same way. Start one and step away. A notification brings you back. Designed in Seoul by Pukaki. Features - Tilt-based time selection, four customizable presets - Focus, Break, and Long Break — all set in minutes - Sessions end when you decide, not when the clock does - Automatic logging with optional tags - Records filtered by date or tag - Matt white and Matt black themes - No accounts. No tracking. No ads.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Master One | TURN |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone | iPhone |
| Requires iOS | 16.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Mary Ogawa | Junhong Park |
Customer experience
Master One
TURN
In-app purchases
Master One
- LIFE_PURCHASE$0.99
TURN
No in-app purchases









