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Last updated on: 2026-06-05
Android Apps > Productivity > 21 Days Challenge - Habit App
21 Days Challenge - Habit App icon

21 Days Challenge - Habit App

1.3.1
DeviationApps
3.75
227 reviews
100,000+
Downloads
Free

Changing habits is a battle, and picking up the right tool is a battle half won.

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About 21 Days Challenge - Habit App

21 Days Challenge - Habit App is a productivity app developed by DeviationApps.

Download Statistics

21 Days Challenge - Habit App has been downloaded 110 thousand times. In the last 30 days, the app was downloaded 70 times.

User Ratings

21 Days Challenge - Habit App is rated 3.75 out of 5 stars. The rating is based on 230 ratings.

App Information

21 Days Challenge - Habit App is FREE to download. The APK download size is 21.31 MB. The latest version available is 1.3.1. The last update was on October 29, 2023.

Technical Requirements

21 Days Challenge - Habit App requires Android 4.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play August 2019.

Description
Ever wondered how long does it take to break a habit?
Scientists and leading psychology research suggest that it takes us around 21 days to break or form a new habit.

This means doing a good thing (eating clean, exercising daily) can become your habit if done 21 days in a row.

And Bestselling Book “Power of Habit by Charles Duhigg” suggests that an old bad habit cannot be extinguished in a day, but can only be replaced with a new good habit in 21 days period.

So if you want to Quit Smoking? Lose Weight by eating clean? Quit eating junk food? Exercise daily? Go to Gym daily?
Just do it for 21 days straight and our app allows you to record your golden age of lifestyle transformation.

How does it work?
To transform your lifestyle and create new good habits :
Add a new goal that you want to pursue
Replace it with a bad habit that you want to quit or extinguish
Set reminder for the time you may want to be reminded
Tap on Mark as Completed if you did it and if you couldn’t do it somehow, restart it!

New Habits You Can Build with our App
1. Quit Smoking
2. 21 Days of No Fap
3. 21 Days of No Sugar
4. 21 Days of Intermittent Fasting
5. 21 Days of Eating Clean
6. 21 Days of Reading a book
7. 21 Days of Being Early Bird
8. 21 Days of Code
9. 21 Days of Journaling
10. 21 Days of Yoga

Features that you may like
1. Powerful reminders with flexible scheduling
2. Updating goals doesn’t take more than a minute
3. Create a new avatar for your new lifestyle
4. Replace your bad habits with new habits
5. Calendar view to visualise your progress
6. Animations to lighten up the mood

Recent changes:
Updates as per new policy requirements
Show more Show less

More data about 21 Days Challenge - Habit App

Price Free to download
Total downloads 110 thousand
Recent downloads 70
Rating 3.75 based on 230 ratings
Ranking Not ranked
Version 1.3.1
APK size 21.3 MB
Number of libraries 17
Designed for Android 4.1+
Suitable for Everyone
Ads NO ads

App Performance Report

Get a detailed PDF report for 21 Days Challenge - Habit App with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

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21 Days Challenge - Habit App compared with similar apps

Common keywords of similar apps

Eating Clean Battle Book Replace Days Habit Habits Quit App Good Daily Bad Lifestyle Break Smoking Create

Keywords missing from this app

Tracker Progress Track Day Stay Time Goals Build Motivated Goal Reminders Easy Tracking Statistics Calendar Life Routines Free Journey Rewards Achieve Productivity Simple Counter Streaks Add Eazy Helps Building Personal Focused Dashboard Data Recent Privacy Long Change Support

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Google Play Rating history and histogram

Downloads over time

21 Days Challenge - Habit App has been downloaded 110 thousand times. Over the past 30 days, it has been downloaded 70 times.

Changelog of 21 Days Challenge - Habit App

Show changelog

Developer information for DeviationApps

DeviationApps

dpsoftgamesindia95@gmail.com

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Comments on 21 Days Challenge - Habit App for Android

★★★★☆ Akash Srivastava · Feb 7, 2022
1) You should remove the necessity of adding a reminder while adding a goal. For e.g. If someone has to add a goal of not doing something for 21 days, why they will add a reminder of that thing. So that's why I think the reminder thing should be optional. 2) The color of the tick icon of the goal should change from gray to green when we click on it, but it does the opposite. 3) In case I mistakenly click on the tick of a goal it adds one day completion of that task, and I can't undo my action
★★★★★ Erhan · Jan 25, 2021
I like this app because It's simple and straightforward. I just want to say few things would make it better: Being able to mark as complete any day should be possible. If I already started a challenge, I would like to mark previous days completed. Alarm feature should be optional. Adding comments to the challenges. It could be daily notes or just plain text. Calendar view. Successful days acsm be green, others red, maybe. Settings for profile. There are some other things but character limit.
★★★★★ Paras Gaba · Jul 19, 2020
Great app to challenge yourself and set the target for yourself. Really helpful
★★★★★ Ritamaria Saleh · Apr 3, 2021
It really encourages you to achieve your goals it is so easy to use and so useful Love this app❤
★★☆☆☆ Yolandi 3 · Feb 26, 2021
Very simple and easy to use, but the app restarted my progress and now all my goals show that there are 13 days left, when there isn't. It worked so well in the beginning, but now I wasted my time with the app.
★★☆☆☆ Ashley Dion · Apr 30, 2021
I was using the app fine for a few weeks; it is simple to use, and the reminders are helpful. But despite the requested time for a reminder, I have started getting reminders much too late in the day. At first, it was just off by an hour or so but lately I have been getting notifications for all my goals at the same time at the end of the day.

Google Play Rankings for 21 Days Challenge - Habit App

This app is not ranked

Technologies used by 21 Days Challenge - Habit App

21 Days Challenge - Habit App is requesting 8 permissions and is using 17 libraries.
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