# Master One - Habit Builder — Track & Master Your Habits

> Focus on building one habit at a time with custom durations and progress tracking. (iPhone/iPad app by Mary Ogawa.)

- Source: https://appshunter.io/ios/app/master-one-habit-builder/id6504889928 (this page in markdown: same URL + `.md`)
- Developer: [Mary Ogawa](https://appshunter.io/developer/1615657857)
- Category: Productivity, Lifestyle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 16.6 · 3 MB
- Languages: English
- Released: 2024-07-01
- Data updated: 2026-06-08
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/master-one-habit-builder/id6504889928/reviews.md

## What is Master One?

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.

## Key features

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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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



## Frequently asked questions about Master One

### What is Master One's core functionality?

Master One helps users build habits by focusing on one at a time. It allows for custom durations, tracking of streaks and progress, and provides a history of completed habits.

### How does Master One handle habit completion and progress?

Users can track their streaks, update progress daily, and review a list of 'Mastered Habits' to reflect on their growth. Past entries can also be edited.

### Can I pause or resume habits in Master One?

Yes, Master One allows you to archive habits, effectively pausing them. You can also restart these archived habits later to pick up where you left off.

### What is 'Strict Mode' in Master One?

Strict Mode in Master One requires perfect streaks with no gaps allowed to count progress. This feature is for users who want to maintain absolute consistency.

### Does Master One have ads?

Yes, Master One contains advertisements. As it is free with in-app purchases, ads are part of the user experience.

### What devices does Master One support?

Master One is currently supported on iPhone devices.

### How often is Master One updated?

The latest version of Master One is 3.3, and it was last updated on March 20, 2025. This indicates a relatively frequent update schedule.

### What is the age rating for Master One?

Master One has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 3.3 — 2025-03-20

Strict mode, themes, archive list

### 2 — 2024-12-18

- Custom durations (premium)
- New monochrome look!
- History overview (premium)

### 1.02 — 2024-07-16

- Update title, subtitle, and keywords
- Ad banner

### 1.01 — 2024-07-02

Marketing and Privacy Policy URL

### 1.0 — 2024-07-01

No release notes.

## Apps similar to Master One

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Habit Tracker Daily Routine](https://appshunter.io/ios/app/habit-tracker-daily-routine/id6474066150) | 5.0 (3) | Free | Productivity |
| [Build Momentum](https://appshunter.io/ios/app/build-momentum/id6745558765) | — | Free | Productivity |
| [Streak Stack](https://appshunter.io/ios/app/streak-stack/id6741832418) | 5.0 (10) | Free | Productivity |
| [HelloHabit - Daily Planner](https://appshunter.io/ios/app/hellohabit-daily-planner/id6476824223) | 4.8 (245) | Free | Productivity |
| [HabitBook - Habit Tracker](https://appshunter.io/ios/app/habitbook-habit-tracker/id6749925752) | — | Free | Productivity |
| [Habitat - Daily Habit Tracker](https://appshunter.io/ios/app/habitat-daily-habit-tracker/id594111557) | 4.6 (339) | Free | Productivity |

## More apps by Mary Ogawa

- [CRanker](https://appshunter.io/ios/app/cranker/id1615657855)
- [Tomato Kitchen](https://appshunter.io/ios/app/tomato-kitchen/id6748864978)

All apps by Mary Ogawa: https://appshunter.io/developer/1615657857

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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 2026-06-08.*