Class Delta
Records the radio. Tells you when the tower is calling you. Plays the call back.
An iOS app for GA pilots, in private testing.
Ask for a TestFlight invite: hello@classdelta.app
Skyhawk four six two one bravo, Paine Tower, cleared to land one six right, wind one four zero at eight.
Heads down, tower calling
You are on the checklist, or the chart, or the passenger. Your callsign comes over the radio and the app shows an alert.
Missed what they said
One tap replays the last call to you. Hear it once more before you read it back, with no "say again" on the air.
The whole flight, kept
Every flight is recorded from start to shutdown, with the track. A crash or a dead battery does not lose it.
Hear how you sounded
After the flight, step through every transmission with the silence skipped. Share the recording with your instructor.
A new device, the same flights
Turn on cloud backup and your recordings sync automatically across your devices.
Free.
Create a free account with Apple, Google or an email code.
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In the field
Live transcription of radio calls is being tested in the field and will be released when it's solid.
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Designing
A post-flight debrief of your own radio work, readbacks and call-ups included.
What you need
Two connections: one so your device hears the radio, one so you hear the replays.
An aviation Y cable splits the aircraft's radio and intercom into two outputs: one into your headset, the other into your iPhone or iPad: USB-C, Lightning or 3.5 mm depending on the port.
To hear replays in your headset: pair it over Bluetooth if it has it, or run an aux cable from your device to the headset's aux input. Without either, replays play on the device speaker.
Setup steps and the gear tried so far are on the support page.
What it does not do
- It is not a flight instrument and not a substitute for listening to the radio.
- The alert can miss a call and can fire on another aircraft with a similar callsign.
- It records what your intercom carries. You are responsible for recording lawfully where you fly.
- You, the pilot in command, remain responsible for the flight.
Try it
Class Delta is in private testing with a small group of pilots. Email with your aircraft and home field for a TestFlight invite.