# Stonel Wireless Link vs OPTICHECK Level Mobile

The clearest difference is iOS requirement: Stonel Wireless Link at 9.0 against OPTICHECK Level Mobile's 11.0. 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.

Stonel Wireless Link ships an update every 5 months, OPTICHECK Level Mobile every 3 months. The most recent releases landed on June 5, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Stonel Wireless Link | OPTICHECK Level Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/stonel-wireless-link/id995355080/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 2 MB | 242 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Valmet Flow Control Inc.](https://appshunter.io/developer/995355079) | [KROHNE Messtechnik GmbH](https://appshunter.io/developer/1445655816) |

## What reviewers say

### Stonel Wireless Link

[App page](https://appshunter.io/ios/app/stonel-wireless-link/id995355080)

This app allows remote monitoring and control of automated valves via Bluetooth. Users can locate valves, set switch positions, manage network addresses, and log maintenance information. It also provides access to installation manuals and diagnostic data.

**Highlights:** Remote valve location, Monitor/set switch positions, Monitor/set network address, Operate solenoid valves, Identify model/serial number, Log maintenance information, Monitor diagnostics

**Features:** macOS Compatibility

**In-app purchases:** none


### OPTICHECK Level Mobile

[App page](https://appshunter.io/ios/app/opticheck-level-mobile/id1596750666)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stonel Wireless Link free?

Stonel Wireless Link is free to download, with no in-app purchases.

### Is OPTICHECK Level Mobile free?

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

### Do Stonel Wireless Link or OPTICHECK Level Mobile have ads?

Neither Stonel Wireless Link nor OPTICHECK Level Mobile shows ads.

### Which is updated more often, Stonel Wireless Link or OPTICHECK Level Mobile?

Stonel Wireless Link ships an update every 5 months, and OPTICHECK Level Mobile every 3 months. Most recently, Stonel Wireless Link was updated on June 5, 2026 and OPTICHECK Level Mobile on September 23, 2026.

---

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