Best 21 Day Fix Apps

26+ iOS apps curated and reviewed

4.3 avg rating
19 free apps
Updated September 2026

Looking for free 21 day fix apps? 19 of our 26+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top 21 Day Fix Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
121 Day Fix® Tracker – Official21 Day Fix® Tracker – OfficialFree4.6★ (2.5K)NoNoSep 2026
221 Day Container Tracker21 Day Container TrackerFree4.7★ (510)NoYesSep 2026
321 Day Slimple - The Easy Fix!21 Day Slimple - The Easy Fix!$1.992.0★ (1)NoNoAug 2026
421 Day Container Workout Fix21 Day Container Workout FixFree4.1★ (43)NoYesMay 2026
5Insane 60 Day Workout TrackerInsane 60 Day Workout TrackerFree4.7★ (489)NoYesAug 2026
6BB Links - Your Coaching LinksBB Links - Your Coaching LinksFree4.9★ (3.1K)YesYesAug 2026
730 Day Ab Challenge at Home30 Day Ab Challenge at HomeFree3.2★ (6)NoYesMay 2026
8Calorie Calculator+ by FoodFlyCalorie Calculator+ by FoodFlyFree4.5★ (33)YesYesSep 2026

Top Picks for 21 Day Fix

4.6😐(2.5K ratings)
Free
21 Day Fix® Tracker – Official screenshot 1
21 Day Fix® Tracker – Official screenshot 2

Easily monitor your nutrition and workouts with this official tracker. Log colored containers for meals, track water intake, and access daily workout plans. Monitor progress with body measurements and maintain your results with a dedicated maintenance mode.

What We Love

  • 💻 Simple and easy to use
  • 📋 Convenient way to track containers
  • 🍽️ Helpful food lists for each container
  • 🔍 Allows you to see where you are in the program

Room to Improve

  • 🐛 App crashes or freezes frequently
  • 🔢 Unable to enter decimal values for weight/measurements
  • 💤 Lack of progress tracking across multiple rounds
  • 🌱 No option for vegetarian/vegan plans
4.7😊(510 ratings)
FreeIn-App Purchases
21 Day Container Tracker screenshot 1
21 Day Container Tracker screenshot 2
21 Day Container Tracker screenshot 3
21 Day Container Tracker screenshot 4
21 Day Container Tracker screenshot 5
21 Day Container Tracker screenshot 6

This app helps users track their progress on a 21-day program. It allows for easy logging of containers, water intake, exercises, and body measurements. Visualize your journey with progress graphs and access an approved food list.

What We Love

  • 👍 Easy to use
  • 📊 Helpful for tracking progress
  • 🔍 Comprehensive food lists
  • 🗓️ Convenient for daily tracking
  • 💪 Supports various fitness programs

Room to Improve

  • 💰 Paid subscription required
  • 🔁 Resets data after each cycle
  • 🚫 Limited customization options
  • 📋 Lacks detailed food logging
  • 🔔 Needs more notifications/reminders

More 21 Day Fix apps to explore

FAQ about 21 Day Fix

What are the best 21 day fix apps for iPhone?
21 Day Fix® Tracker – Official tops our 21 day fix apps ranking as of September 2026, with a 4.6-star average from 2.5K App Store ratings, and it's free to download.
Yes — 19 of the top 21 day fix apps we rank are free to download, including 21 Day Fix® Tracker – Official and 21 Day Container Tracker.
21 Day Fix® Tracker – Official has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 26+ 21 day fix apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app helps you track your nutrition and workouts for the 21 Day Fix® program. You can log your meals using colored containers, monitor your water intake, and follow daily workout plans. It also allows you to record body measurements and transition to a maintenance plan after completing the program.
The app uses a system of colored containers to represent different food groups and portion sizes. You add the containers you consume for each meal, and the app shows you the remaining portions for each container you have left for the day. A container reference guide is also included.

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