# PumpRex vs FFMI Calc

The clearest difference is in-app purchases: FFMI Calc at none against PumpRex's 2. FFMI Calc also leads on update cadence (every 4 days vs every 3 weeks). PumpRex's advantage is iOS requirement (17.0 vs 26.4). On price, ads and device support there is nothing between them.

Both are free to download. PumpRex sells 2 in-app purchases, starting at $6.99 per month. FFMI Calc asks for nothing beyond the download.

PumpRex ships an update every 3 weeks, FFMI Calc every 4 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PumpRex | FFMI Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 5 MB | 1 MB |
| Requires iOS | **17.0** | 26.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [JARI TOIVIAINEN](https://appshunter.io/developer/1881425556) | [Tomoharu Iseki](https://appshunter.io/developer/1863683948) |

## What reviewers say

### PumpRex

[App page](https://appshunter.io/ios/app/pumprex-gym-workout-tracker/id6759879756)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PumpRex Pro Monthly | $6.99 | per month |
| PumpRex Pro Yearly | $44.99 | per year |


### FFMI Calc

[App page](https://appshunter.io/ios/app/ffmi-calc/id6768256805)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PumpRex free?

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

### Is FFMI Calc free?

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

### Do PumpRex or FFMI Calc have ads?

Neither PumpRex nor FFMI Calc shows ads.

### Which is updated more often, PumpRex or FFMI Calc?

PumpRex ships an update every 3 weeks, and FFMI Calc every 4 days. Most recently, PumpRex was updated on October 11, 2026 and FFMI Calc on October 7, 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.*