Optical Power Meter vs Morse Relay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Optical Power Meter
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.
- Remote control via Bluetooth
- Large needle gauge display
- 5-digit power reading
- Minimum and maximum readings
- Wavelength correction
- Zeroing function
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The Thorlabs Powermeter App is designed to remote control the PM160 series handheld optical power meters via Bluetooth® connection. This application allows the user to read the optical power from a large needle gauge, supported by a 5 digit display with additional minimum and maximum readings. Basic settings like wavelength correction and zeroing can be performed directly from your mobile device. The app requires a Bluetooth® paired device. Supported Power Meters: - Thorlabs PM160 - Thorlabs PM160T
Morse Relay
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.
- Send Morse code via torch
- Receive Morse code via camera
- Screen blinking for Morse code
- App-to-app encoding/decoding
- Morse code transmission
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Morse Relay allows you to: - Send out morse code over your device's torch - Record it by pointing your camera at another device that is emitting a morse message. Currently, it only supports encoding and decoding from app to app. The algorithms do not support human message fully yet. For device without torch, the signal is emitted in a blinking box on the screen. For suggestions or collaborations, contact @nidegen
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Optical Power Meter | Morse Relay |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 2.6 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 5 — better | — |
| Update frequency | Every 12 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 19 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Thorlabs GmbH | Echo Labs AG |
Customer experience
Optical Power Meter
Morse Relay
In-app purchases
Optical Power Meter
No in-app purchases
Morse Relay
No in-app purchases
Questions
Is Optical Power Meter free?
Is Morse Relay free?
Do Optical Power Meter or Morse Relay have ads?
Which is updated more often, Optical Power Meter or Morse Relay?
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