# METSyS Current Logger vs FieldProof

The clearest difference is in-app purchases: METSyS Current Logger at none against FieldProof's 1. METSyS Current Logger also leads on iOS requirement (13.0 vs 17.0). FieldProof'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. FieldProof sells 1 one-off in-app purchase. METSyS Current Logger asks for nothing beyond the download.

METSyS Current Logger ships an update every 12 months, FieldProof weekly. The most recent releases landed on September 13, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | METSyS Current Logger | FieldProof |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Weekly** |
| Size | 25 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GMC-I PROSyS Ltd](https://appshunter.io/developer/1444875054) | [Thomas Golbach](https://appshunter.io/developer/1052772798) |

## What reviewers say

### METSyS Current Logger

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

**Features:** macOS Compatibility

**In-app purchases:** none


### FieldProof

[App page](https://appshunter.io/ios/app/fieldproof-site-reports/id6787054868)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FieldProof Pro | $19.99 | one-time |


## Frequently asked questions

### Is METSyS Current Logger free?

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

### Is FieldProof free?

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

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

Neither METSyS Current Logger nor FieldProof shows ads.

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

METSyS Current Logger ships an update every 12 months, and FieldProof weekly. Most recently, METSyS Current Logger was updated on September 13, 2026 and FieldProof on September 15, 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.*