# Steelhead vs Light Matter Kit

The clearest difference is update cadence: Steelhead at every 5 weeks against Light Matter Kit's every 9 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.

Steelhead ships an update every 5 weeks, Light Matter Kit every 9 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Steelhead | Light Matter Kit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/steelhead/id1644144210/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 75 MB | 35 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stevens Water Monitoring Systems, Inc.](https://appshunter.io/developer/503634320) | [FEIBIT ELECTRONIC TECHNOLOGY CO., LTD.](https://appshunter.io/developer/961499817) |

## What reviewers say

### Steelhead

[App page](https://appshunter.io/ios/app/steelhead/id1644144210)

This utility app allows users to connect to and configure compatible sensors via Bluetooth. It enables direct sensor diagnostics, immediate readings, and downloading of stored data for analysis.

**Highlights:** Bluetooth (BLE) connectivity, Sensor configuration (add/change sensors), Reporting/sampling interval adjustment, SDI-12 Transparent mode for diagnostics, Immediate current readings, Download stored data

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

**In-app purchases:** none


### Light Matter Kit

[App page](https://appshunter.io/ios/app/light-matter-kit/id6469416147)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Steelhead free?

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

### Is Light Matter Kit free?

Light Matter Kit is free to download, with no in-app purchases.

### Do Steelhead or Light Matter Kit have ads?

Neither Steelhead nor Light Matter Kit shows ads.

### Which is updated more often, Steelhead or Light Matter Kit?

Steelhead ships an update every 5 weeks, and Light Matter Kit every 9 months. Most recently, Steelhead was updated on November 3, 2026 and Light Matter Kit on November 3, 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.*