# Optical Power Meter vs Morse Relay

The clearest difference is price: Optical Power Meter at Free against Morse Relay's $0.99. Optical Power Meter also leads on iOS requirement (12.0 vs 18.0). Morse Relay's advantage is review sentiment (33% vs 0%) and update cadence (every 4 months vs every 12 months). On ads, in-app purchases and device support there is nothing between them.

Optical Power Meter is free to download; Morse Relay costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Optical Power Meter ships an update every 12 months, Morse Relay every 4 months. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Optical Power Meter | Morse Relay |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[2.6 (5 ratings)](https://appshunter.io/ios/app/optical-power-meter/id665941154/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 4 months** |
| Monetization | **Free** | Paid |
| Size | 19 MB | 2 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thorlabs GmbH](https://appshunter.io/developer/662121683) | [Echo Labs AG](https://appshunter.io/developer/1477626709) |

## What reviewers say

### Optical Power Meter

[App page](https://appshunter.io/ios/app/optical-power-meter/id665941154)

Control handheld optical power meters remotely via Bluetooth. View power readings on a large gauge and a 5-digit display, with min/max tracking. Adjust basic settings like wavelength and zeroing from your mobile device.

**Highlights:** Remote control via Bluetooth, Large needle gauge display, 5-digit power reading, Minimum and maximum readings, Wavelength correction, Zeroing function

**Features:** macOS Compatibility

**In-app purchases:** none


### Morse Relay

[App page](https://appshunter.io/ios/app/morse-relay/id1409525264)

This app enables users to send and receive Morse code using their device's torch or screen. It supports app-to-app communication for encoding and decoding messages, with a visual blinking box option for devices without a torch.

**Highlights:** Send Morse code via torch, Receive Morse code via camera, Screen blinking for Morse code, App-to-app encoding/decoding, Morse code transmission

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optical Power Meter free?

Optical Power Meter is free to download, with no in-app purchases.

### Is Morse Relay free?

Morse Relay costs $0.99, with no in-app purchases.

### Do Optical Power Meter or Morse Relay have ads?

Neither Optical Power Meter nor Morse Relay shows ads.

### Which is updated more often, Optical Power Meter or Morse Relay?

Optical Power Meter ships an update every 12 months, and Morse Relay every 4 months. Most recently, Optical Power Meter was updated on October 21, 2026 and Morse Relay 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.*