Light Meter vs Greyline FT8
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Light Meter
This application acts as a portable light meter, allowing users to measure light intensity in lux and foot candles. It offers real-time readings, a log library for saving measurements, and the ability to calibrate with professional devices for enhanced accuracy. The app supports both front and rear cameras and saves scene images.
- Real-time light intensity measurement
- Lux and foot candle readings
- Saveable log library
- Calibration with professional illuminometer
- Front and rear camera support
- Scene image saving
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Light Meter - Lux and foot candle measurement tool in your pocket! Light Meter for Film Photography. Light meter in your pocket! The only app you really need to measure light intensity. You can calibrated with professional Illuminometer. Features: - Exclusive simplicity and convenience of use with unique and attractive design. - Real-time measurements. - Result are save-able into log library. - All result are comparable with Variable Lux, foot candle, ISO and Date in log library. - Scene Image are save-able into camera-roll - Front and rear camera supported. - Lux and foot candle measurement. - Option to Calibrated with light sensitivity. To ensure the accuracy of measurements. you can calibrated with professional high-precision illuminometer. Note : Light Meter app is not a replacement for a professional device and should be used for private purposes only. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
Greyline FT8
This app provides a portable digital ham radio experience for field operations on iOS devices. It automates callsign lookups, displays real-time spot data, and offers automated calling or manual control for QSOs. Features include intelligent frequency selection, audio delay adjustment, and direct logging to QRZ.
- Field-ready digital ham radio
- Automated callsign and DXCC lookups
- Real-time PSK Reporter spot data
- Automated CQ Gatherer and Hunter modes
- Intelligent automatic frequency selection
- Direct-to-QRZ logging and ADI export
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Greyline FT8 is a highly portable, capable amateur radio app designed specifically for field operation with an iOS device. I designed this app because I got very used to my full-stack FT8 solution: GridTracker, WSJT-X, PSK Reporter, WRL Desktop, several browser tabs, and more. But I didn't want the bulk and weight of a full Windows PC in the field. At the same time, while there are excellent and lightweight FT8 iOS solutions out there, they were lacking features I really wanted. Greyline is everything you need and nothing you don't. It automatically locates your grid square, performs callsign and calling station DXCC lookups (internet access required), and can even show you real-time spot data from PSK Reporter. Want to adjust your directional antenna? Now you've got the info you need to do it! Greyline also incorporates automated calling features. Gatherer mode calls CQ, responds to the first reply it gets, finishes the QSO and returns to calling CQ all without your input. On the other side of things, Hunter mode listens for CQ calls and pounces on them, finishing a QSO then returning to the live band to find the next. Or, take control of the conversation yourself with standard mode. That's the experience you're already used to from WSJT-X and other digital mode apps. Some other noteworthy features are: - Intelligent automatic free frequency selection - Dynamically adjusted audio delay for virtually drift-free message timing - PSK Reporter integrated Live Spots - Direct-to-QRZ, WRL and private Cloudlog logging and ADI export - Configurable waterfall settings - CQ addendums - CQ filtering for contesting and general courteous operation - Configurable retransmissions - Intelligent log recovery (didn't get that last 73 but want to log the contact anyway? Now you can!) - Log import and export - Antenna tuning - POTA Autospotting - One touch POTA activation and POTA.app-compatible ADIF export - Multiple POTA activation support - And so much more! Greyline uses audio VOX and not serial PTT. Most radios support this with simple cabling or an audio interface like a Digirig. For helpful tips on cabling and configuring popular radios, visit the Support URL below. Built by a ham, for hams, I'm very open to your feedback and hope Greyline can be your field companion. Want to share your own Field Notes (https://greylineft8.com/fieldnotes.html)? Email me at support@greylineft8.com!
Screenshots
Verdict
The clearest difference is rating: Greyline FT8 at 4.9 against Light Meter's 4.2. Greyline FT8 also leads on review sentiment (90% vs 50%) and update cadence (every 4 days vs every 48 months). Light Meter's advantage is price ($2.99 vs $3.99) and iOS requirement (13 vs 26.5). On ads, in-app purchases, monetization model 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
Light Meter costs $2.99 and Greyline FT8 $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Greyline FT8 holds the better App Store score, 4.9 against 4.2. Both are backed by a comparable volume of ratings — 5 and 15 respectively. Written reviews point the same way: 50% of Light Meter's written reviews are positive against 90% of Greyline FT8's.
Light Meter ships an update every 48 months, Greyline FT8 every 4 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | Light Meter | Greyline FT8 |
|---|---|---|
| Price | $2.99 — better | $3.99 |
| Rating | 4.2 (5 ratings) | 4.9 (15 ratings) — better |
| Positive reviews | 50.0% of reviews | 90.0% of reviews — better |
| Number of ratings | 5 | 15 — better |
| Update frequency | Every 48 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #190 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13 — better | 26.5 |
| Further details — not scored | ||
| Size | 1 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | JONATHAN MARK SCHULMAN |
Customer experience
Light Meter
Greyline FT8
In-app purchases
Light Meter
No in-app purchases
Greyline FT8
No in-app purchases









