# Performance Unit vs Box + Burn

The clearest difference is update cadence: Performance Unit at every 6 weeks against Box + Burn's every 5 months. Performance Unit also leads on device support (4 vs 2). 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.

Performance Unit ships an update every 6 weeks, Box + Burn every 5 months. The most recent releases landed on May 17, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Performance Unit | Box + Burn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Size | 205 MB | 31 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Selkrig Performance](https://appshunter.io/developer/1515613082) | [Workoutroba Oy](https://appshunter.io/developer/1667877342) |

## What reviewers say

### Performance Unit

[App page](https://appshunter.io/ios/app/performance-unit/id1515613083)

**Features:** Apple Wallet

**In-app purchases:** none


### Box + Burn

[App page](https://appshunter.io/ios/app/box-plus-burn/id1667877340)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Performance Unit free?

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

### Is Box + Burn free?

Box + Burn is free to download, with no in-app purchases.

### Do Performance Unit or Box + Burn have ads?

Neither Performance Unit nor Box + Burn shows ads.

### Which is updated more often, Performance Unit or Box + Burn?

Performance Unit ships an update every 6 weeks, and Box + Burn every 5 months. Most recently, Performance Unit was updated on May 17, 2026 and Box + Burn on September 8, 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.*