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1. Regularly (Free)

Regularly is at top 1 in the list of best free android apps for building habit. This app make a list of all tasks and categorize them as which task is more important. For a 7 days task that is three days late is a lot more necessary and will spawn more reminders than a yearly task that is a week late.This app has widgets which enable you to take a quick look at what you need to do.
2. Habit Streak Plan (Free)

3.iPro Habit Tracker Free

iPro Habit Tracker Free is best free habit building apps.. This app is much like Regularly. This app provide full performance of your task like percentages, bars, charts, and a colored calender. For example if you want to sustain your habit of drinking water, then it will ask you how many glass of water you have drink and how many times. This is best habit tracker which make you habitutial of particular task.
4. Goal Tracker Habit Calendar

5. Success Log Fail Log

The Android apps will also keep track of when you use taps, so you can see what days of the week and what time of day you tend to have the most successes or failure.
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