# IVIT vs Protimeter Firmware Update

The clearest difference is update cadence: IVIT at weekly against Protimeter Firmware Update's every 4 months. Protimeter Firmware Update's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 15.5). On price, ads and in-app purchases there is nothing between them.

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

IVIT ships an update weekly, Protimeter Firmware Update every 4 months. The most recent releases landed on August 27, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | IVIT | Protimeter Firmware Update |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 months |
| Size | 52 MB | 27 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Verdi NTFS AS](https://appshunter.io/developer/1276574149) | [Amphenol-Sensors](https://appshunter.io/developer/1086146573) |

## What reviewers say

### IVIT

[App page](https://appshunter.io/ios/app/ivit/id1471960698)

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

**In-app purchases:** none


### Protimeter Firmware Update

[App page](https://appshunter.io/ios/app/protimeter-firmware-update/id6738372546)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IVIT free?

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

### Is Protimeter Firmware Update free?

Protimeter Firmware Update is free to download, with no in-app purchases.

### Do IVIT or Protimeter Firmware Update have ads?

Neither IVIT nor Protimeter Firmware Update shows ads.

### Which is updated more often, IVIT or Protimeter Firmware Update?

IVIT ships an update weekly, and Protimeter Firmware Update every 4 months. Most recently, IVIT was updated on August 27, 2026 and Protimeter Firmware Update on September 11, 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.*