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The 21 Days Challenge

The 21 Days Challenge

Introduce life changing habits

565 ratings
303 reviews
With Ads
🌟 Lifestyle
📊 Productivity
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • November 7, 2019
  • October 9, 2026

Features

Developer

Kati Pereira
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About

Build lasting habits and transform your life over 21 days with guided challenges. Track your progress, journal your thoughts, and customize your avatar with earned points. Discover new routines for health, productivity, and happiness.

✓21-day habit challenges
✓Habit tracking
✓Avatar customization
✓Daily journaling
✓Mood tracking
✓Community feed
✓Positive affirmations
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What users say about The 21 Days Challenge

Reviews of The 21 Days Challenge are mostly positive: the Lifestyle app is rated 4.7/5 from 565 App Store ratings. What users like most: simple and motivating, clean design and clear progress tracking. Top complaints: lack of search option in community challenges, challenges disappear after creation, no way to find them. Summarized from real user reviews.

Positive things

  • 🚀Simple and motivating
  • 👍Clean design and clear progress tracking
  • 🤗Genuinely helpful and enjoyable to use
  • 💫Positive impact on mental health and habits
  • 🌟Inspirational and encouraging messages
  • 🌱Helps build healthy routines

Negative things

  • 🔍Lack of search option in community challenges
  • 🔀Challenges disappear after creation, no way to find them
  • 🤖Too many ads interrupting the experience
  • 🎨App could use more customization options
See all reviews
+1

What's New in The 21 Days Challenge

8.7.27

October 9, 2026

From the daily quote straight to your step When you open the daily quote notification, a new button takes you straight to the current day of your challenge. "We are what we repeatedly do. Excellence, then, is not an act, but a habit." — Will Durant

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Subscriptions & In-App Purchases

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User reviews

Most RecentHighest RatedLowest Rated

Great app

Great app
Daisy_D2Daisy_D2

Great App

Have been using this app for many years
Poohhh_08Poohhh_08

Using for years

Using for the past 3 years.
Its something magical.
Sgram_Sgram_

I love it

I love the way sometimes send useful messages.
NaifxNaifx

Improved mental health but more updates

This app improved my mental health significantly, it doesn’t tell you the cliche things people tell someone who is suffering with mental illness. They give creative quotes everyday and a reason to keep going. I just wish they made more challenges!
Chiquita100jdhdjxChiquita100jdhdjx
See 298 more reviews

User experience

🐞

Reported Bugs

2 issues

Sharing created challenges does not work as expected

Bug

Challenges sometimes disappear from the app

Bug
✨

Requested Features

4 requests

Add a search function for community challenges

Feature

Allow users to save and revisit their own created challenges

Feature

Provide more customization options for the app and user profile

Feature

Introduce a widget for easier access to daily tasks

Feature

FAQ

What is the 21 Days Challenge app?

The 21 Days Challenge app helps users introduce and build life-changing habits over a 21-day period. It offers various challenges focused on health, productivity, happiness, and more. Users can track their progress, journal their experiences, and engage with a community.

What kind of challenges can I find in the app?

The app offers a diverse range of challenges, including starting a healthy lifestyle, taking breaks from the internet, practicing gratitude, improving productivity, finding happiness and calm, studying effectively, spreading kindness, and fixing sleep schedules. It also includes daily positive affirmations.

How does the habit tracking and avatar customization work?

You can mark your daily tasks as completed to earn points. These points can then be used to customize your avatar with various items like hairstyles, eyes, mouth shapes, and clothes, making it a gamified habit tracker.

Is the app free to use?

The app is free to download and use, but it does offer in-app purchases and has advertisements. This means you can access core features without cost, but may choose to spend money for additional customization options or an ad-free experience.

Can I use this app to improve my mental well-being?

Yes, the app supports mental well-being through features like daily journaling, mood tracking, and practicing gratitude. You can also find challenges focused on finding happiness, calm, and positive affirmations to cultivate a healthier mind.