# Sentron vs ESA Alben

The clearest difference is iOS requirement: ESA Alben at 13.0 against Sentron's 15.0. On price, update cadence, 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.

Sentron ships an update every 5 weeks, ESA Alben every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Sentron | ESA Alben |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sentron/id1623135557/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 94 MB | 27 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sentron Europe B.V.](https://appshunter.io/developer/1623135559) | [ESA S.p.A. (BG)](https://appshunter.io/developer/1823860419) |

## What reviewers say

### 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


### ESA Alben

[App page](https://appshunter.io/ios/app/esa-alben/id6748006417)

**In-app purchases:** none


## Frequently asked questions

### Is Sentron free?

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

### Is ESA Alben free?

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

### Do Sentron or ESA Alben have ads?

Neither Sentron nor ESA Alben shows ads.

### Which is updated more often, Sentron or ESA Alben?

Sentron ships an update every 5 weeks, and ESA Alben every 2 months. Most recently, Sentron was updated on November 3, 2026 and ESA Alben on October 30, 2026.

---

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