Best 21 Days Habit Transformation Apps

246+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated October 2026

Finding the right 21 days habit transformation apps can be overwhelming with so many options. We've analyzed 246+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top 21 Days Habit Transformation Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
121 Days Habit Transformation21 Days Habit TransformationFree—NoYesOct 2026
2Lock In - Transform YourselfLock In - Transform YourselfFree3.0★ (6)NoYesNov 2026
3Habit: 21 day routineHabit: 21 day routine$0.99—NoYesOct 2026
4Days Without: Break Bad HabitsDays Without: Break Bad HabitsFree5.0★ (6)NoNoOct 2026
521 Days: Quit Bad Habits21 Days: Quit Bad HabitsFree—NoNoMay 2026
6HABIT: Break the LoopHABIT: Break the LoopFree5.0★ (1)NoYesAug 2026
7The 21 Days ChallengeThe 21 Days ChallengeFree4.7★ (575)YesYesNov 2026
821DaysOfChange21DaysOfChangeFree—NoYesOct 2026

Top Picks for 21 Days Habit Transformation

Lock In - Transform Yourself#2
3.0(6 ratings)
FreeIn-App Purchases
Lock In - Transform Yourself screenshot 1
Lock In - Transform Yourself screenshot 2
Lock In - Transform Yourself screenshot 3
Lock In - Transform Yourself screenshot 4
Lock In - Transform Yourself screenshot 5
Lock In - Transform Yourself screenshot 6

This program guides users through a 75-day journey to build lasting confidence by establishing core habits. It leverages neuroscience to help users create daily evidence of their transformation, fostering self-trust and rewiring neural pathways for sustained change.

Habit: 21 day routine#3

Habit: 21 day routine by Anand Raj R

1 Habit. 21 Days. Real Change.
Worth Considering
🌟 Lifestyle
0.0(0 ratings)
$0.99In-App Purchases
Habit: 21 day routine screenshot 1
Habit: 21 day routine screenshot 2
Habit: 21 day routine screenshot 3

Build life-changing habits with a focused 21-day approach. Track your progress, receive gentle reminders, and celebrate milestones to achieve real change. This app emphasizes self-accountability for lasting results.

More 21 Days Habit Transformation apps to explore

FAQ about 21 Days Habit Transformation

Are there free 21 days habit transformation apps for iPhone?
Yes — 19 of the top 21 days habit transformation apps we rank are free to download, including 21 Days Habit Transformation and Lock In - Transform Yourself.
21 Days Habit Transformation has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 246+ 21 days habit transformation apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.