# PreSens Wireless Studio vs Sentron

PreSens Wireless Studio and Sentron are too close to call on the numbers: across 7 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

PreSens Wireless Studio ships an update every 2 months, Sentron every 5 weeks. The most recent releases landed on September 10, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | PreSens Wireless Studio | Sentron |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sentron/id1623135557/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 56 MB | 94 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PreSens Precision Sensing GmbH](https://appshunter.io/developer/1460253859) | [Sentron Europe B.V.](https://appshunter.io/developer/1623135559) |

## What reviewers say

### PreSens Wireless Studio

[App page](https://appshunter.io/ios/app/presens-wireless-studio/id1460253860)

This application allows users to connect to Bluetooth-enabled oxygen meters for configuration, measurement, and data management. It supports live viewing of oxygen concentration and exporting data in various formats.

**Highlights:** Bluetooth oxygen meter connection, Device configuration, Live oxygen measurement display, Measurement data management, Data export to CSV, XLSX, PDF

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

**In-app purchases:** none


### Sentron

[App page](https://appshunter.io/ios/app/sentron/id1623135557)

Transform your mobile device into a sophisticated pH meter. Connect wirelessly to specialized probes for accurate measurements in various applications. The app guides you through calibration, data logging, and export.

**Highlights:** Wireless pH/EC measurement, Bluetooth probe connectivity, Step-by-step calibration, Data logging and graphing, GPS data mapping, Automatic temperature compensation

**In-app purchases:** none


## Frequently asked questions

### Is PreSens Wireless Studio free?

PreSens Wireless Studio is free to download, with no in-app purchases.

### Is Sentron free?

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

### Do PreSens Wireless Studio or Sentron have ads?

Neither PreSens Wireless Studio nor Sentron shows ads.

### Which is updated more often, PreSens Wireless Studio or Sentron?

PreSens Wireless Studio ships an update every 2 months, and Sentron every 5 weeks. Most recently, PreSens Wireless Studio was updated on September 10, 2026 and Sentron on September 22, 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.*