Best 21 Day Challenge Apps

233+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated October 2026

If you already know The 21 Days Challenge, this is the deeper bench. 233+ 21 day challenge apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.

Compare top 21 Day Challenge Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1The 21 Days ChallengeThe 21 Days ChallengeFree4.7★ (565)YesYesOct 2026
221 Day Fitness at Home21 Day Fitness at HomeFree3.9★ (17)YesYesAug 2026
321-Day Shape-Up Plan21-Day Shape-Up PlanFree—YesYesMay 2026
4Be fit 21 - Home workout appBe fit 21 - Home workout appFree4.6★ (613)NoYesAug 2026
521 Days21 DaysFree—NoYesSep 2026
6Habit TrackerHabit TrackerFree4.8★ (148K)NoYesOct 2026
730 Day Fitness at Home30 Day Fitness at HomeFree4.9★ (29K)YesYesOct 2026
8Quit Vaping: 21 Day ChallengeQuit Vaping: 21 Day ChallengeFree—NoYesSep 2026

Top Picks for 21 Day Challenge

The 21 Days Challenge#1

The 21 Days Challenge by Kati Pereira

Introduce life changing habits
Editor's Choice
🌟 Lifestyle
4.7😊(565 ratings)
FreeAdsIn-App Purchases
The 21 Days Challenge screenshot 1
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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.

What We Love

  • 🚀 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

Room to Improve

  • 🔍 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
21 Day Fitness at Home#2

21 Day Fitness at Home by Duc Hiep Dong

21 Day Challenge For Fitness
Strong Contender
📊 Productivity
3.9(17 ratings)
FreeAdsIn-App Purchases
21 Day Fitness at Home screenshot 1
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This app offers a 21-day fitness challenge designed for women, providing at-home workouts without equipment. It features customizable plans, progress tracking, and voice-guided coaching to help users achieve their fitness and weight loss goals.

More 21 Day Challenge apps to explore

FAQ about 21 Day Challenge

What are the best 21 day challenge apps for iPhone?
The 21 Days Challenge tops our 21 day challenge apps ranking as of October 2026, with a 4.7-star average from 565 App Store ratings, and it's free to download.
Yes — 19 of the top 21 day challenge apps we rank are free to download, including The 21 Days Challenge and 21 Day Fitness at Home.
The 21 Days Challenge shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 233+ 21 day challenge apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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