Comparison

Microphone Watch vs Greyline FT8

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Microphone Watch

Transform your Apple Watch into a powerful megaphone. Record your voice and play it back amplified on your iPhone, which can then connect to external speakers. Boost volume significantly for clear announcements.

Highlights
  • Record audio on Apple Watch
  • Playback audio on iPhone
  • Connect iPhone to external speakers
  • Amplify volume over 100%
  • Background audio playback
  • Apple Watch Complication support
Features
Read full description

Microphone Watch is an app that turns your Apple Watch into a microphone, allowing you to make announcements with a loud voice. Features -Record audio on your Apple Watch and play it back on your iPhone. -Connect your iPhone to a speaker using either Bluetooth or a wired line. -Amplify the volume by more than 100% using the gain function. How to Use 1. Prepare your Apple Watch, iPhone, and a speaker. 2. Connect your iPhone to the speaker and test the audio. 3. Launch this app on both your Apple Watch and iPhone. 4. Record your voice using the app on your Apple Watch. 5. Press the Stop button on your Apple Watch to end the recording. 6. The audio will be transferred to your iPhone. *1 7. The transferred audio will play automatically on your iPhone. *2 8. Repeat the recording and playback process as needed. *3 *1 Don't worry about increased storage, as the recording file is overwritten each time. *2 The app can play audio in the background and can be used in conjunction with apps like Music. *3 You can add a shortcut to your Apple Watch face (Complication feature).

About

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.

Highlights
  • 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
Features
Read full description

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

Microphone Watch4 screens
Greyline FT84 screens

Verdict

The call

The clearest difference is update cadence: Microphone Watch at every 2 days against Greyline FT8's every 4 days. Microphone Watch also leads on review sentiment (100% vs 90%) and price ($2.99 vs $3.99). 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

CostPrice · In-app purchases · Ads · Monetization

Microphone Watch costs $2.99 and Greyline FT8 $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Microphone Watch ships an update every 2 days, Greyline FT8 every 4 days. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Microphone Watch versus Greyline FT8: the parameters behind the verdict, then further details
ParameterMicrophone WatchGreyline FT8
Price$2.99 — better$3.99
Rating—4.9 (14 ratings) — better
Positive reviews100.0% of reviews — better90.0% of reviews
Number of ratings—14 — better
Update frequencyEvery 2 days — betterEvery 4 days
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.4 — better26.5
Further details — not scored
Size4 MB18 MB
Age rating4+4+
Developerkobunachou ozawaJONATHAN MARK SCHULMAN

Customer experience

Microphone Watch

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Greyline FT8

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive90.0%
Neutral10.0%
Negative0.0%

In-app purchases

None

Microphone Watch

No in-app purchases

None

Greyline FT8

No in-app purchases

Questions

Is Microphone Watch free?
Microphone Watch costs $2.99, with no in-app purchases.
Is Greyline FT8 free?
Greyline FT8 costs $3.99, with no in-app purchases.
Do Microphone Watch or Greyline FT8 have ads?
Neither Microphone Watch nor Greyline FT8 shows ads.
Which is updated more often, Microphone Watch or Greyline FT8?
Microphone Watch ships an update every 2 days, and Greyline FT8 every 4 days. Most recently, Microphone Watch was updated on October 5, 2026 and Greyline FT8 on October 24, 2026.

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