# Protimeter BLE vs Hydro Pro App

The clearest difference is update cadence: Hydro Pro App at every 2 months against Protimeter BLE's every 10 months. 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.

Protimeter BLE ships an update every 10 months, Hydro Pro App every 2 months. The most recent releases landed on September 23, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Protimeter BLE | Hydro Pro App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Size | 33 MB | 21 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Amphenol-Sensors](https://appshunter.io/developer/1086146573) | [The Testing Agency LLC](https://appshunter.io/developer/1700427350) |

## What reviewers say

### Protimeter BLE

[App page](https://appshunter.io/ios/app/protimeter-ble/id1272528996)

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

**In-app purchases:** none


### Hydro Pro App

[App page](https://appshunter.io/ios/app/hydro-pro-app/id6456410800)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Protimeter BLE free?

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

### Is Hydro Pro App free?

Hydro Pro App is free to download, with no in-app purchases.

### Do Protimeter BLE or Hydro Pro App have ads?

Neither Protimeter BLE nor Hydro Pro App shows ads.

### Which is updated more often, Protimeter BLE or Hydro Pro App?

Protimeter BLE ships an update every 10 months, and Hydro Pro App every 2 months. Most recently, Protimeter BLE was updated on September 23, 2026 and Hydro Pro App on September 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*