# METSyS Current Logger vs Messprotokoll 365

The clearest difference is in-app purchases: METSyS Current Logger at none against Messprotokoll 365's 3. METSyS Current Logger also leads on iOS requirement (13.0 vs 16.0). Messprotokoll 365's advantage is update cadence (weekly vs every 12 months). On price, ads and device support there is nothing between them.

Both are free to download. Messprotokoll 365 sells 3 in-app purchases, starting at $2.49 per month. METSyS Current Logger asks for nothing beyond the download.

METSyS Current Logger ships an update every 12 months, Messprotokoll 365 weekly. The most recent releases landed on October 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | METSyS Current Logger | Messprotokoll 365 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 11 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GMC-I PROSyS Ltd](https://appshunter.io/developer/1444875054) | [Reiko Klein](https://appshunter.io/developer/984943326) |

## What reviewers say

### METSyS Current Logger

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Messprotokoll 365

[App page](https://appshunter.io/ios/app/messprotokoll-365/id1605362120)

Easily create and manage measurement logs for electrical installations, devices, and charging stations. Save data in a database and export as PDF. Streamline recurring entries by copying circuits and using customizable dropdown menus for common fields.

**Highlights:** Create measurement logs for electrical installations, Save logs in a database, Export logs as PDF, Copy recurring circuits and fields, Use customizable dropdown menus, Barcode scanning for quick retrieval, Drag & drop data transfer between apps

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Alle Funktionen für 1 Monat | $2.49 | per month |
| Alle Funktionen für 6 Momate | $10.49 | per 6 months |
| Alle Funktionen für 1 Jahr | $17.99 | per year |


## Frequently asked questions

### Is METSyS Current Logger free?

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

### Is Messprotokoll 365 free?

Messprotokoll 365 is free to download, with in-app purchases available.

### Do METSyS Current Logger or Messprotokoll 365 have ads?

Neither METSyS Current Logger nor Messprotokoll 365 shows ads.

### Which is updated more often, METSyS Current Logger or Messprotokoll 365?

METSyS Current Logger ships an update every 12 months, and Messprotokoll 365 weekly. Most recently, METSyS Current Logger was updated on October 26, 2026 and Messprotokoll 365 on October 10, 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.*