# METSyS Current Logger vs ProMa

The clearest difference is update cadence: ProMa at every 3 days against METSyS Current Logger's every 12 months. METSyS Current Logger's advantage is iOS requirement (13.0 vs 16.4). 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.

METSyS Current Logger ships an update every 12 months, ProMa every 3 days. The most recent releases landed on September 13, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | METSyS Current Logger | ProMa |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 days** |
| Size | 25 MB | 62 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GMC-I PROSyS Ltd](https://appshunter.io/developer/1444875054) | [Suncycle GmbH](https://appshunter.io/developer/1193526099) |

## What reviewers say

### METSyS Current Logger

[App page](https://appshunter.io/ios/app/metsys-current-logger/id1444875055)

**Features:** macOS Compatibility

**In-app purchases:** none


### ProMa

[App page](https://appshunter.io/ios/app/proma/id1595844221)

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

**In-app purchases:** none


## Frequently asked questions

### Is METSyS Current Logger free?

METSyS Current Logger is free to download, with no in-app purchases.

### Is ProMa free?

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

### Do METSyS Current Logger or ProMa have ads?

Neither METSyS Current Logger nor ProMa shows ads.

### Which is updated more often, METSyS Current Logger or ProMa?

METSyS Current Logger ships an update every 12 months, and ProMa every 3 days. Most recently, METSyS Current Logger was updated on September 13, 2026 and ProMa on August 31, 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.*