Master One - Habit Builder

Track & Master Your Habits

Only for iPhone

Free · In‑App Purchases

iPhone

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.

  • 5.0
    out of 5
    1 Ratings

Strict mode, themes, archive list

The developer, Mary Ogawa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Location
    • Identifiers
    • Usage Data
    • Diagnostics
  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Identifiers
    • Usage Data
    • Diagnostics
  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

  • Seller
    • Mary Ogawa
  • Size
    • 3.6 MB
  • Category
    • Productivity
  • Compatibility
    Requires iOS 16.6 or later.
    • iPhone
      Requires iOS 16.6 or later.
  • Languages
    • English
  • Age Rating
    4+
  • In-App Purchases
    Yes
  • Copyright
    • © 2025 Mary Ogawa