# IsoMetrix vs Peformax XPRS

The clearest difference is update cadence: Peformax XPRS at fortnightly against IsoMetrix's every 2 months. IsoMetrix's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

IsoMetrix ships an update every 2 months, Peformax XPRS fortnightly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | IsoMetrix | Peformax XPRS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 39 MB | 105 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [IsoMetrix](https://appshunter.io/developer/1420432028) | [BRAXTON CONSULTING (PTY) LTD](https://appshunter.io/developer/1667561086) |

## What reviewers say

### IsoMetrix

[App page](https://appshunter.io/ios/app/isometrix/id1420432029)

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

**In-app purchases:** none


### Peformax XPRS

[App page](https://appshunter.io/ios/app/peformax-xprs/id6456891345)

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

**In-app purchases:** none


## Frequently asked questions

### Is IsoMetrix free?

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

### Is Peformax XPRS free?

Peformax XPRS is free to download, with no in-app purchases.

### Do IsoMetrix or Peformax XPRS have ads?

Neither IsoMetrix nor Peformax XPRS shows ads.

### Which is updated more often, IsoMetrix or Peformax XPRS?

IsoMetrix ships an update every 2 months, and Peformax XPRS fortnightly. Most recently, IsoMetrix was updated on October 26, 2026 and Peformax XPRS on October 25, 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.*