Best 21 Days Habit Transformation Apps

233+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated July 2026

Finding the right 21 days habit transformation apps can be overwhelming with so many options. We've analyzed 233+ 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 (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
121 Days Habit Transformation21 Days Habit TransformationFree was $5.99NoYesJun 2026
2Habit Tracker by GoalifyHabit Tracker by GoalifyFree4.7★ (340)NoYesJul 2026
3Reload: Reset Life & Lock InReload: Reset Life & Lock InFree4.8★ (956)NoYesJul 2026
4Kaizen AI: Reset Life 66 DaysKaizen AI: Reset Life 66 DaysFree4.5★ (54)YesYesJul 2026
5(Not Boring) Habits(Not Boring) HabitsFree4.8★ (5.6K)NoYesJul 2026
6Transform 75 : Hard ChallengeTransform 75 : Hard ChallengeFree5.0★ (1)YesYesJul 2026
7Habitify: Habit TrackerHabitify: Habit TrackerFree4.6★ (7K)NoYesJul 2026
8Grit: Daily Habit TrackerGrit: Daily Habit TrackerFree4.9★ (11K)NoYesJul 2026

Top Picks for 21 Days Habit Transformation

Habit Tracker by Goalify#2

Habit Tracker by Goalify by onebytezero GmbH

Goal Setting & Accountability
Strong Contender
📊 Productivity
4.7(340 ratings)
FreeIn-App Purchases
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Habit Tracker by Goalify screenshot 5
Habit Tracker by Goalify screenshot 6

Build lasting habits, achieve your goals, and stay accountable with this comprehensive tracker. It offers smart reminders, progress visualization, and group challenges to keep you motivated and committed.

Reload: Reset Life & Lock In#3

Reload: Reset Life & Lock In by Focus Core LTD

Transform Yourself In 60 Days
Worth Considering
💪 Health & Fitness
4.8😐(956 ratings)
FreeIn-App Purchases
Reload: Reset Life & Lock In screenshot 1
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This app offers a science-backed 60-day plan to help you build better habits, improve focus, and achieve your goals. It provides personalized plans, progress tracking, and tools to block distractions and quit bad habits.

What We Love

  • 🚀 Helps with focus and productivity
  • 📚 Useful library feature
  • 💯 One of the best apps for screen time and focus

Room to Improve

  • 💰 Requires paid subscription to use
  • 🔓 No free option available
  • 🤔 Blocked entire app categories

More 21 Days Habit Transformation apps to explore

4
Kaizen AI: Reset Life 66 Days
Kaizen AI: Reset Life 66 Days
Kaizen AI: Reset Life 66 Days
Life Transformation in 66 Days
Free

This app guides users through a 66-day journey of personal growth and discipline. It features AI-powered habit tracking with gamified progression, daily prompts, and journaling capabilities to help users build consistency and achieve their goals.

AI-powered habit trackingGamified progression systemDaily affirmations and prompts
💪 Health & Fitness
(54)
free with in-app purchases
5
(Not Boring) Habits
(Not Boring) Habits
(Not Boring) Habits
Science-backed habit tracker
Free

Build better habits with a fun, guilt-free approach based on science. Focus on consistent repetition rather than streaks, with daily guidance and motivational tools. Customize your experience with unique skins and widgets.

Science-backed habit buildingFocus on 60 repetitionsNo guilt or streaks
💪 Health & Fitness
(5.6K)
freemium
6
Transform 75 : Hard Challenge
Transform 75 : Hard Challenge
Transform 75 : Hard Challenge
75 hard & 75 soft days tracker
Free

This app helps you track progress through a 75-day physical and mental challenge. It provides tools for logging daily tasks, workouts, hydration, and meals, with features to capture progress photos and set reminders. Users can also share their journey and track multiple attempts.

Daily progress trackingWorkout and meal loggingHydration monitoring
💪 Health & Fitness
(1)
free with in-app purchases
7
Habitify: Habit Tracker
Habitify: Habit Tracker
Habitify: Habit Tracker
Build Your Routine & Streaks
Free

Build lasting habits and break bad ones with this comprehensive tracker. It offers smart reminders, detailed insights, and organization tools to help you improve daily. Seamlessly syncs across devices and integrates with health apps.

Track habits, routines, and goalsSmart time and location-based remindersHabit stacking for seamless transitions
💪 Health & Fitness
(7K)
freemium
8
Grit: Daily Habit Tracker
Grit: Daily Habit Tracker
Grit: Daily Habit Tracker
Routines & Goals ADHD Planner
Free

This app helps users build good habits and break bad ones by providing tools for goal achievement. It offers smart reminders, detailed statistics, and integration with Apple Health to support users on their journey. Personalize your experience with customizable themes and track progress easily with widgets.

Habit tracking and goal achievementSmart reminders and notificationsApple Health integration
📊 Productivity
(11K)
free with in-app purchases
9
DayQuest - Build Habits
DayQuest - Build Habits
DayQuest - Build Habits
30-Day Life Transformation
Free
💪 Health & Fitness
(0)
10
Days Since: Quit Habit Tracker
Days Since: Quit Habit Tracker
Days Since: Quit Habit Tracker
Sober Time Clean Day Counter
Free

Break free from bad habits with this tracker. Create custom counters for any vice, like smoking, and visualize your progress. Stay motivated by seeing how long you've gone without giving in, helping you achieve your goals.

Custom habit countersTrack progress visuallyMotivation through tracking
💪 Health & Fitness
(19K)
free with in-app purchases
11
Way of Life - Habit Tracker
Way of Life - Habit Tracker
Way of Life - Habit Tracker
Build a better, stronger you
Free

Effortlessly track and transform your daily habits in under a minute. This intuitive tool helps you identify trends, build positive streaks, and achieve a healthier lifestyle with customizable reminders and insightful charts. Unlock your potential for a better, stronger you.

Daily habit trackingPositive streak challengesCustomizable reminders
💪 Health & Fitness
(5.1K)
free with in-app purchases
12
75 Soft Challenge™ Official
75 Soft Challenge™ Official
75 Soft Challenge™ Official
75 day custom fitness tracker
Free

This app guides users through a customizable health challenge focused on building positive habits like movement, nutritious eating, and hydration. It offers a flexible approach to fitness, encouraging users to feel good about their progress without strict rules.

Customizable challenge goalsHabit trackingProgress monitoring
💪 Health & Fitness
(49)
free with in-app purchases
13
Lock In - Transform Yourself
Lock In - Transform Yourself
Lock In - Transform Yourself
Track habits over 75 days
Free

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.

75-day habit programNeuroscience-based insightsDaily evidence tracking
💪 Health & Fitness
(0)
free with in-app purchases
14
DayStamp - Habit Tracker
DayStamp - Habit Tracker
DayStamp - Habit Tracker
Build Habits, Change Your Life
Free

This app helps you build and maintain good habits daily. Track your progress with widgets, view detailed statistics, and receive AI-powered habit recommendations. Make habit formation easy and sustainable to achieve life-changing results.

Simple and powerful widgetsCalendar and weekly report widgetsDetailed monthly and yearly statistics
📊 Productivity
(486)
free with in-app purchases
15
The 21 Days Challenge
The 21 Days Challenge
The 21 Days Challenge
Introduce life changing habits
Free

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 challengesHabit trackingAvatar customization
🌟 Lifestyle
(499)
free with in-app purchases
16
Do Habits: Get It Done
Do Habits: Get It Done
Do Habits: Get It Done
Daily Routine & Goal Planner
Free

Build healthy habits and break bad ones with this goal-setting and progress-tracking app. It allows for multiple daily goal completions and offers customizable features like journals, reminders, and data export. Integrate with Apple HealthKit for automatic tracking.

Set and track goals multiple times dailyDaily, weekly, monthly, yearly trackingCustomizable habit display with icons and colors
📊 Productivity
(17K)
freemium
17
Habitat - Daily Habit Tracker
Habitat - Daily Habit Tracker
Habitat - Daily Habit Tracker
Set Goals and Track Progress
Free

This app helps you build and maintain positive habits by visualizing your progress as a chain. Set weekly schedules for activities and mark your progress daily to stay motivated and avoid breaking your streak. Features include widgets, custom notifications, and detailed stats.

Build activity chainsSet weekly schedulesHome screen widget
📊 Productivity
(339)
free with in-app purchases
18
Quit Bad Habits & Addiction
Quit Bad Habits & Addiction
Quit Bad Habits & Addiction
Quit Smoking & Drinking Easily
Free

This app helps you overcome addictions like smoking, drinking, or gambling. Track your progress, analyze patterns, and set achievable goals with a daily companion designed for self-improvement. Regain control and build a healthier life.

Track unlimited habitsCountdown timer for progressDetailed history and analysis
🌟 Lifestyle
(950)
free with in-app purchases
19
VitaHabit: Habit Tracker
VitaHabit: Habit Tracker
VitaHabit: Habit Tracker
Build routines Stay consistent
Free

Build positive daily routines with a simple, pressure-free habit tracker. Focus on small, consistent actions to achieve long-term growth and stay motivated with gentle reminders and rewards.

Daily habit trackingStep tracking integrationStreak building system
💪 Health & Fitness
(94)
free with in-app purchases
20
Atoms - from Atomic Habits
Atoms - from Atomic Habits
Atoms - from Atomic Habits
The official Atomic Habits app
Free

This app helps you build good habits and break bad ones using principles from a best-selling book. It offers bite-sized lessons, guided habit creation, and smart reminders to make positive changes in just five minutes a day.

Guided habit creationBite-sized lessonsSmart reminders
📊 Productivity
(10K)
free with in-app purchases

FAQ about 21 Days Habit Transformation

Are there free 21 days habit transformation apps for iPhone?
Yes — 20 of the top 21 days habit transformation apps we rank are free to download, including 21 Days Habit Transformation and Habit Tracker by Goalify.
21 Days Habit Transformation has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 233+ 21 days habit transformation apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.