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Android Apps > Productivity > 21 Days Challenge - Habit App
21 Days Challenge - Habit App icon

21 Days Challenge - Habit App

by DeviationApps · Productivity · Free
On Google Play since August 2019 · Data updated 2026-10-24
Google Play

21 Days Challenge - Habit App is made and published by DeviationApps. AppBrain is an independent app data site and isn't affiliated with DeviationApps. The app name, icon, screenshots and description belong to DeviationApps and are shown as published on Google Play.

AppBrain's verdict

Established
Rating on Google Play
3.75
226 ratings
Installs
110 thousand
Last updated
October 29, 2023
Ads
No ads
Size
21.3 MB

21 Days Challenge - Habit App has 110 thousand installs. Users are divided: 3.8 stars from 226 ratings.

User feedback

Ratings and reviews on Google Play

Comments on 21 Days Challenge - Habit App for Android

★★★★☆ Ahmed Nadeem · Jan 23, 2022
Good app....but can't be edit....if I set a goal and try to correct misspell I can't and if I mistakenly set the day completed and later want to undo this.....there is no option to edit it....
★★★★★ 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❤
★★★★☆ Tuba · Apr 6, 2023
I love the simple design of this app, but it really needs some fixes as at has a feature to set a reminder that reminder feature didn't worked at all for me, I set time & I get no notification reminder at all I just hope you fix this problem soon
★★★★★ 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.
★★☆☆☆ 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.
★★☆☆☆ 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.

Google Play Rating history and histogram

110
0
84
0
28

Store listing

By DeviationApps, from Google Play

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

21 Days Challenge - Habit App Screenshot 1 of 7
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Screenshots by DeviationApps, from the Google Play listing
Description by DeviationApps Written by the developer, not by AppBrain. Click to read.
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
Official page on Google Play

Safety and technology

Found in the app by AppBrain
Ads
No ads
Price
Free
Libraries
17
App size
21.3 MB
Needs Android
4.1+
Content rating
Everyone

Technologies used by 21 Days Challenge - Habit App

8 permissions · 17 libraries
Subscribe to see full permission and library details

Releases

Updates seen on Google Play
Version
1.3.1
Launched
August 2019
  • Jul 21, 2025Installs100,000+ installs
  • Oct 29, 2023UpdateVersion 1.3.1
  • Sep 21, 2021Installs50,000+ installs
  • Apr 24, 2021UpdateVersion 1.3.1
  • Feb 27, 2021UpdateVersion 1.2.0
Show all changes Show fewer

Alternatives

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Installs

Tracked by AppBrain
Last 30 days
30
Play install range
100+ thousand
Launched
August 2019

Installs over time

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

Rankings

Google Play top charts

Google Play Rankings for 21 Days Challenge - Habit App

This app is not ranked

About the app and developer

About 21 Days Challenge - Habit App

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

Install Statistics

21 Days Challenge - Habit App has been installed 110 thousand times. In the last 30 days, the app was installed 30 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 freely available from Google Play. The app 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 since August 2019.

App Performance Report

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Developer information for DeviationApps

DeviationApps

dpsoftgamesindia95@gmail.com

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Frequently asked questions about 21 Days Challenge - Habit App

Is 21 Days Challenge - Habit App free?

Yes. 21 Days Challenge - Habit App is free on Google Play.

Is 21 Days Challenge - Habit App still available?

Yes. 21 Days Challenge - Habit App is on Google Play, and the last update we saw was on October 29, 2023.

Does 21 Days Challenge - Habit App contain ads?

No. Google Play does not list 21 Days Challenge - Habit App as containing ads.

What Android version does 21 Days Challenge - Habit App require?

21 Days Challenge - Habit App runs on Android 4.1 and higher.

How large is 21 Days Challenge - Habit App?

21 Days Challenge - Habit App is 21.31 MB.

Is 21 Days Challenge - Habit App suitable for children?

Google Play rates the content of 21 Days Challenge - Habit App as suitable for everyone.

How many times has 21 Days Challenge - Habit App been installed?

Google Play lists 100,000+ installs for 21 Days Challenge - Habit App.

How do people rate 21 Days Challenge - Habit App?

21 Days Challenge - Habit App scores 3.75 out of 5 stars, from 226 ratings on Google Play.

Who made 21 Days Challenge - Habit App?

21 Days Challenge - Habit App was developed by DeviationApps. It is listed in the productivity category on Google Play.

What are the best alternatives to 21 Days Challenge - Habit App?

People looking at 21 Days Challenge - Habit App also look at these productivity apps: Simple Habit Tracker - Habits, Day counter: bad habits, Bad Habit Tracker - Freedom, Habit Tracker - HabitKit, Habit Eazy - Habit & To Do Pal.

Share 21 Days Challenge - Habit App

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Overview Alternatives History Reviews Rankings Technology
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