# Atomic CrossFit vs Functional Bodybuilding

The clearest difference is review sentiment: Atomic CrossFit at 100% against Functional Bodybuilding's 26%. Atomic CrossFit also leads on rating (5.0 vs 2.9) and device support (3 vs 1). Functional Bodybuilding's advantage is ratings volume (145 vs 3) and update cadence (weekly vs every 3 weeks). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Atomic CrossFit holds the better App Store score, 5.0 against 2.9. That said, the two scores are not equally well evidenced: Functional Bodybuilding has 145 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of Atomic CrossFit's written reviews are positive against 26% of Functional Bodybuilding's.

Atomic CrossFit ships an update every 3 weeks, Functional Bodybuilding weekly. The most recent releases landed on October 3, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Atomic CrossFit | Functional Bodybuilding |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/atomic-crossfit/id6502669164/reviews)** | [2.9 (145 ratings)](https://appshunter.io/ios/app/functional-bodybuilding/id6739143347/reviews) |
| Number of ratings | 3 | **145** |
| Positive reviews | **100.0% of reviews** | 26.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Ad-supported | **Free** |
| Size | 81 MB | 119 MB |
| Requires iOS | **15** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Atomic CrossFit](https://appshunter.io/developer/1749126256) | [Cliff Kohut](https://appshunter.io/developer/1783826754) |

## What reviewers say

### Atomic CrossFit

[App page](https://appshunter.io/ios/app/atomic-crossfit/id6502669164)

This app allows members to easily reserve spots in fitness classes and sign up for gym events. It also provides convenient account management features, such as updating personal information and payment details.

**Highlights:** Class reservation, Event sign-up, Account management, Profile updates, Payment information management

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

**In-app purchases:** none


### Functional Bodybuilding

[App page](https://appshunter.io/ios/app/functional-bodybuilding/id6739143347)

Access all your Functional Bodybuilding resources in one place. This app houses everything from PERSIST programs to FBB ebooks, providing a centralized hub for your training materials.

**Highlights:** Access to PERSIST programs, FBB ebooks library, All offerings in one app, Centralized training hub

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

**In-app purchases:** none

**What reviewers like**

- 👍 Workouts are good

**What reviewers complain about**

- 🐛 Plagued with bugs
- 🚫 Not user-friendly
- 🤔 Too much unnecessary information
- 🔌 Sound issues with videos
- 🤯 Confusing workout explanations

**Reported bugs**

- Videos not playing
- Workout data not saving
- Calendar issues
- App crashes after latest update

**Requested features**

- Simplify the app interface
- Provide all workout details on one page
- Improve the built-in timer functionality


## Frequently asked questions

### Is Atomic CrossFit free?

Atomic CrossFit is free to download, with no in-app purchases.

### Is Functional Bodybuilding free?

Functional Bodybuilding is free to download, with no in-app purchases.

### Which has better reviews, Atomic CrossFit or Functional Bodybuilding?

Atomic CrossFit is rated higher. Atomic CrossFit averages 5.0 out of 5 from 3 ratings, while Functional Bodybuilding averages 2.9 from 145 ratings.

### Do Atomic CrossFit or Functional Bodybuilding have ads?

Neither Atomic CrossFit nor Functional Bodybuilding shows ads.

### Which is updated more often, Atomic CrossFit or Functional Bodybuilding?

Atomic CrossFit ships an update every 3 weeks, and Functional Bodybuilding weekly. Most recently, Atomic CrossFit was updated on October 3, 2026 and Functional Bodybuilding on October 20, 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.*