# 21 Day Container Workout Fix vs OptimalFit

The clearest difference is rating: 21 Day Container Workout Fix at 4.1 against OptimalFit's 3.3. 21 Day Container Workout Fix also leads on monetization model (freemium vs subscription) and iOS requirement (12.0 vs 15.1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. 21 Day Container Workout Fix sells 2 in-app purchases, starting at $2.99 per month and OptimalFit sells 2 in-app purchases, starting at $19.95 per month. Whichever you choose, the download price is not the number that matters.

21 Day Container Workout Fix holds the better App Store score, 4.1 against 3.3. Both are backed by a comparable volume of ratings — 45 and 16 respectively.

21 Day Container Workout Fix ships an update every 5 days, OptimalFit every 3 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 21 Day Container Workout Fix | OptimalFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (45 ratings)](https://appshunter.io/ios/app/21-day-container-workout-fix/id1507655549/reviews)** | [3.3 (16 ratings)](https://appshunter.io/ios/app/optimalfit/id6754051624/reviews) |
| Number of ratings | **45** | 16 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | **Freemium** | Subscription |
| Size | 49 MB | 64 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mehul Srivastava](https://appshunter.io/developer/1008621157) | [Alex Borst](https://appshunter.io/developer/1846477583) |

## What reviewers say

### 21 Day Container Workout Fix

[App page](https://appshunter.io/ios/app/21-day-container-workout-fix/id1507655549)

Easily track your 21-day workout progress with this intuitive fitness app. It replaces paper calendars, offers a calorie calculator, BMI tracking, and photo logging to monitor your transformation. Stay motivated with reminders and custom graphs.

**Highlights:** Ad-free tracking, Calorie calculator, BMI calculator, Workout streaks tracker, Custom progress graphs, Nutrition notes, Progress photo logging

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Yearly Subscription | $12.99 | per year |


### OptimalFit

[App page](https://appshunter.io/ios/app/optimalfit/id6754051624)

This app offers personalized fitness and nutrition plans that adapt to your individual goals, schedule, and equipment. It provides AI-powered coaching and progress tracking to help you achieve sustainable improvements in your fitness and overall wellness.

**Highlights:** Customized resistance-training workouts, Personalized nutrition guidance, AI-powered coaching, Progress tracking, Adaptive to user needs, Body composition improvements

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OptimalFit Membership | $19.95 | per month |
| OptimalFit | $199.00 | per year |


## Frequently asked questions

### Is 21 Day Container Workout Fix free?

21 Day Container Workout Fix is free to download, with in-app purchases available.

### Is OptimalFit free?

OptimalFit is free to download, with in-app purchases available.

### Which has better reviews, 21 Day Container Workout Fix or OptimalFit?

21 Day Container Workout Fix is rated higher. 21 Day Container Workout Fix averages 4.1 out of 5 from 45 ratings, while OptimalFit averages 3.3 from 16 ratings.

### Do 21 Day Container Workout Fix or OptimalFit have ads?

Neither 21 Day Container Workout Fix nor OptimalFit shows ads.

### Which is updated more often, 21 Day Container Workout Fix or OptimalFit?

21 Day Container Workout Fix ships an update every 5 days, and OptimalFit every 3 days. Most recently, 21 Day Container Workout Fix was updated on November 3, 2026 and OptimalFit on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*