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21 Days Challenge

Kati & Lima Lifestyle In-app purchases Contains ads

21 days it’s the perfect time to change or introduce something new in your life.

Rating
4.7
92.7K ratings
Downloads
10.8M+
on Google Play
Price
Free
In-app purchases
Updated
Oct 8
2026 · v8.7.23
Get it onGoogle Play See alternatives

Screenshots

  • 21 Days Challenge screenshot 1
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  • 21 Days Challenge screenshot 7

About 21 Days Challenge

It is estimated that it takes people 21 days to form a new habit. So it’s a perfect amount of time to change or introduce something new in your life. Choose the best challenge for you and do it for 21 days and you’re going to see how the habit becomes part of your lifestyle day by day.

Starting a healthy lifestyle, taking a break away from the internet, practicing gratitude, trying to be more productive, simple practices to find happiness and calm in your life, how to study effectively for all the students are some of the challenges that you can find on this app.
There's also a new self-care quarantine and a home workout challenge due to what it's happening currently in the world.
Once you complete your daily task, you can mark as checked and collect the points (to build your avatar). This way, you can use this app like a habit tracker.

In the gratitude challenge, you can write your thoughts and share them in the feed (you can leave anonymously too). Here you're going to see all the community answers and you can also give it a like on your favourite ones.

Complete tasks on your profile and do daily challenges to collect points so you can buy items for your own avatar like different hairstyles, eyes and mouth shapes and clothes.

Enable notifications and choose the time to be notified to remind you to do the challenge every day.

Don’t forget to take care of your body and mind. It's the only place you have to live.

What’s new

Version 8.7.23 · Updated October 8, 2026

✨ Smoother and steadier Behind-the-scenes improvements to keep your days running smoothly, in all 11 languages. "We are what we repeatedly do. Excellence, then, is not an act, but a habit." — Will Durant

User reviews

Yëłłõw ãęsťhętïç
Yëłłõw ãęsťhętïç
No words.UwU best app ever
JOKEBED AUGUSTIN
JOKEBED AUGUSTIN
Useful
Isabella Ronessia
Isabella Ronessia
Very good. :)))) it's . Good
Nikki Lightman
Nikki Lightman
Easy to use, lots of fun ❤️
Preeti Panwar
Preeti Panwar
Nice app. Enjoying the task
•Sunflower •
•Sunflower •
This app is free, helpful and fun. A great app for being happy!

Frequently asked questions

How long does it take for people to form a new habit?
It is estimated that it takes 21 days for people to form a new habit.
What are some challenges available on the app?
Some challenges available on the app include starting a healthy lifestyle, taking a break from the internet, practicing gratitude, trying to be more productive, and simple practices to find happiness and calm in your life. There are also challenges for studying effectively, self-care during quarantine, and home workouts.
How can I track my progress?
You can track your progress by marking your daily tasks as checked and collecting points. These points can be used to build your own avatar.
What can I do in the gratitude challenge?
In the gratitude challenge, you can write your thoughts and share them in the feed. You can also see all the community answers and give a like to your favorite ones.
What can I buy with the points I collect?
With the points you collect, you can buy items for your own avatar such as different hairstyles, eyes and mouth shapes, and clothes.
How can I be reminded to do the challenge every day?
You can enable notifications on the app and choose the time to be notified, reminding you to do the challenge every day.
What is the importance of taking care of your body and mind?
Taking care of your body and mind is important because it is the only place you have to live.

Alternatives to 21 Days Challenge

Looking for apps like 21 Days Challenge? Here are 6 similar Android apps on Google Play. The highest rated is Gratitude: Self-Care Journal (4.9/5), and all 6 are free to download.

21 Days Challenge vs. alternatives
App Rating Price Installs Last updated Compare
21 Days Challenge 4.7 / 5 Free 10,000,000+ Oct 8, 2026
Gratitude: Self-Care Journal 4.9 / 5 Free 5,000,000+ Oct 26, 2026 Compare
Fabulous Daily Routine Planner 4.4 / 5 Free 10,000,000+ Sep 29, 2026 Compare
BetterMe: Mental Health 4.4 / 5 Free 5,000,000+ Oct 7, 2026 Compare
21 Days Habit Challenges 4.5 / 5 Free 1,000,000+ May 25, 2026 Compare
Habit Tracker - Habit Diary 4.7 / 5 Free 10,000,000+ Oct 10, 2026 Compare
HabitNow Daily Routine Planner 4.7 / 5 Free 5,000,000+ Jul 26, 2026 Compare

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