# Chalk Performance Training vs Shack Fit

The clearest difference is rating: Shack Fit at 5.0 against Chalk Performance Training's 3.8. Shack Fit also leads on iOS requirement (12.4 vs 15.0). Chalk Performance Training's advantage is in-app purchases (none vs 1) and ratings volume (165 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Shack Fit sells 1 one-off in-app purchase. Chalk Performance Training asks for nothing beyond the download.

Shack Fit holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Chalk Performance Training has 165 ratings behind it against 1, so its average is the more settled of the two.

Chalk Performance Training ships an update every 5 months, Shack Fit every 4 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Chalk Performance Training | Shack Fit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (165 ratings)](https://appshunter.io/ios/app/chalk-performance-training/id6448561714/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shack-fit/id6451099352/reviews)** |
| Number of ratings | **165** | 1 |
| Positive reviews | 65.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 14 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gym Ryan LLC](https://appshunter.io/developer/1613097662) | [Shack Fit LLC](https://appshunter.io/developer/1439789365) |

## What reviewers say

### Chalk Performance Training

[App page](https://appshunter.io/ios/app/chalk-performance-training/id6448561714)

Access science-based workouts for any fitness level, at home or in the gym. Track your progress, join a supportive global community, and receive expert guidance to achieve your health and fitness goals.

**Highlights:** At-home and gym workout programs, Beginner, intermediate, and advanced options, Exclusive workout library, Video demonstrations and instructions, Progress tracking and performance analysis, Global fitness community and discussions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Convenient and easy to use
- 🔒 Robust security features
- 👍 Variety of workout programs
- 💡 Helpful nutrition resources
- 🚀 Seamless workout tracking

**What reviewers complain about**

- 🐛 Buggy app functionality
- 🔒 Difficult to cancel subscription
- 👎 Poor customer service
- 🐛 Inconsistent user experience
- 👎 Confusing navigation

**Reported bugs**

- Timer resets when switching apps
- Inability to log completed sets
- Workout history not transferring from previous app
- Difficulty creating custom workouts

**Requested features**

- Add option to disable audio during workouts
- Improve ability to enter weights and reps manually
- Provide more customization options for workouts
- Implement seamless sync across devices
- Add support for Apple Watch integration


### Shack Fit

[App page](https://appshunter.io/ios/app/shack-fit/id6451099352)

This fitness platform offers personalized training and nutrition plans for members. It aims to provide an all-encompassing approach to achieving fitness goals.

**Highlights:** Personalized training plans, Personalized nutrition plans, All-encompassing fitness platform, Exclusive member access

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Health & Fitness Plan | $599.99 | one-time |


## Frequently asked questions

### Is Chalk Performance Training free?

Chalk Performance Training is free to download, with no in-app purchases.

### Is Shack Fit free?

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

### Which has better reviews, Chalk Performance Training or Shack Fit?

Shack Fit is rated higher. Chalk Performance Training averages 3.8 out of 5 from 165 ratings, while Shack Fit averages 5.0 from 1 ratings.

### Do Chalk Performance Training or Shack Fit have ads?

Neither Chalk Performance Training nor Shack Fit shows ads.

### Which is updated more often, Chalk Performance Training or Shack Fit?

Chalk Performance Training ships an update every 5 months, and Shack Fit every 4 months. Most recently, Chalk Performance Training was updated on October 24, 2026 and Shack Fit on October 21, 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.*