# Black Iron Training vs Body.build

Black Iron Training and Body.build are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Black Iron Training ships an update every 3 weeks, Body.build every 6 weeks. The most recent releases landed on October 20, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Black Iron Training | Body.build |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 427 MB | 31 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Black Iron Gym, LLC](https://appshunter.io/developer/1559974187) | [Dieter Plaetinck](https://appshunter.io/developer/1850774874) |

## What reviewers say

### Black Iron Training

[App page](https://appshunter.io/ios/app/black-iron-training/id6739282005)

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

**In-app purchases:** none


### Body.build

[App page](https://appshunter.io/ios/app/bodybuild/id6754889919)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Black Iron Training free?

Black Iron Training is free to download, with no in-app purchases.

### Is Body.build free?

Body.build is free to download, with no in-app purchases.

### Do Black Iron Training or Body.build have ads?

Neither Black Iron Training nor Body.build shows ads.

### Which is updated more often, Black Iron Training or Body.build?

Black Iron Training ships an update every 3 weeks, and Body.build every 6 weeks. Most recently, Black Iron Training was updated on October 20, 2026 and Body.build on October 28, 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.*