# OPTICHECK Flow Mobile vs JS Maintenance Mate

The clearest difference is update cadence: JS Maintenance Mate at every 5 weeks against OPTICHECK Flow Mobile's every 3 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.

OPTICHECK Flow Mobile ships an update every 3 months, JS Maintenance Mate every 5 weeks. The most recent releases landed on October 13, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | OPTICHECK Flow Mobile | JS Maintenance Mate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/opticheck-flow-mobile/id1476806101/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 361 MB | 26 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KROHNE Messtechnik GmbH](https://appshunter.io/developer/1445655816) | [JS Proputec AS](https://appshunter.io/developer/1542351307) |

## What reviewers say

### OPTICHECK Flow Mobile

[App page](https://appshunter.io/ios/app/opticheck-flow-mobile/id1476806101)

This utility app facilitates the wireless setup, verification, and ongoing monitoring of specific KROHNE flow meters. It enables secure Bluetooth® connectivity for device configuration and performance checks without interrupting ongoing measurements.

**Highlights:** Wireless device commissioning, Device parameterization via Bluetooth®, Verification without measurement interruption, Monitoring of meter performance, Monitoring of application parameters

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

**In-app purchases:** none


### JS Maintenance Mate

[App page](https://appshunter.io/ios/app/js-maintenance-mate/id1542351245)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OPTICHECK Flow Mobile free?

OPTICHECK Flow Mobile is free to download, with no in-app purchases.

### Is JS Maintenance Mate free?

JS Maintenance Mate is free to download, with no in-app purchases.

### Do OPTICHECK Flow Mobile or JS Maintenance Mate have ads?

Neither OPTICHECK Flow Mobile nor JS Maintenance Mate shows ads.

### Which is updated more often, OPTICHECK Flow Mobile or JS Maintenance Mate?

OPTICHECK Flow Mobile ships an update every 3 months, and JS Maintenance Mate every 5 weeks. Most recently, OPTICHECK Flow Mobile was updated on October 13, 2026 and JS Maintenance Mate on October 27, 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.*