
66 - Build Your New Habit
Small steps, real habits
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About
Building a habit is not about being perfect. It is about repeating one clear action long enough for it to become part of your routine.
SixtySix turns that process into a focused daily challenge. Choose one habit, set the duration, pick your start date, and track each day honestly. 66 is a practical reference point inspired by average habit-formation research, not a magic number, so you can adapt the journey to the habit you want to build.
With SixtySix you can:
- Create a specific habit with a title and description.
- Start from quick examples like reading, walking, drinking water, studying, meditating, training, sleeping better, or limiting phone use.
- Mark each day as completed or missed.
- Record how it felt: easy, normal, or difficult.
- Review and correct previous days in the calendar.
- Follow your progress percentage, streak, and finish date.
- Get a daily reminder when an active habit is still pending.
- Finish with a clear summary of completed days, missed days, best streak, and effort levels.
- View your history and export or import a CSV backup.
SixtySix is designed to help you build one habit at a time: simple, visible, and honest.
Start small. Mark today. Repeat tomorrow. Build your new habit with SixtySix.
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What's New in 66
1.1.0
June 7, 2026
You can now create challenges with a custom frequency: every day, Monday to Friday, weekends, or specific days. Neutral days do not count as missed, do not break your streak, and the app automatically adjusts the real process duration. Added dark mode with light, dark, or system theme options. You can now rate the app from Settings. Added the option to delete challenges from history with confirmation.
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