Cloudy Tower builds radio practice around your home airport. Hear the controller, key the mic, say your reply out loud, and see what you got right in seconds. Then it's easy in the airplane.
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Generic drills don't help when the tower says your runway, your taxiway and your callsign at full speed. Cloudy Tower uses your field.
Search for it or use your location once. Runways, frequencies and nearby fields come from FAA data, and today's wind from the nearest METAR picks the runway in use.
Tower, Ground and Approach each have their own voice, played through a radio effect you can turn up from clear to a busy frequency.
Hold to talk. Your iPhone turns your words into text and grades wording, order and completeness. Drop a “hold short” and it doesn't pass.
Eight stages, 106 lessons and 661 calls, in the order you'll meet them in training. Each lesson goes: learn it, try it with help, practise it, then prove it with no hints. Already flying? Tell it where you are and it opens the stages you've done.
The alphabet, numbers, your callsign and the four parts of a call.
Every call around the pattern at a field without a tower.
Departing, arriving, and visiting the fields nearby.
What each airspace asks of you, which frequency to use, and the ATIS.
Ground, Tower, the pattern and landing at a towered airport.
Flight following, handoffs, Class C and Class B.
Lost, radio failure, Pan-Pan and Mayday.
Whole flights, start to finish, with no hints.
Clearances, climb via, missed approaches. For after your private.
From Stage 2 on, the controller's words disappear. You copy them with a finger into boxes made for the call (taxi, takeoff and landing, vectors, CRAFT, ATIS), with a shorthand guide the first time. The debrief shows what you wrote and what you missed.
Each facility has its own voice, run through a radio effect at four levels: Clear, Radio, Busy and Real. In Listen, a practice frequency plays your airport's traffic. Tap any phrase to decode it, then say it yourself.
Today picks the next lesson and brings back the calls you got wrong, spaced out until they stick.
Lessons, voices for the main course and grading all run without signal. Only weather and new airport voices need a connection.
Open it and make your first call. Your logbook stays on your iPhone. Privacy
The first two stages are free for good. A month of Pro costs less than a tenth of an hour in a Skyhawk.
Prices in US dollars; the App Store shows your local price. Pro is an auto-renewing subscription billed by Apple to your Apple Account. The free week comes with the yearly plan, for new subscribers. Cancel any time in Settings, at least 24 hours before it renews. Terms
No. Cloudy Tower is a training aid. It gives you reps between lessons so your instructor can spend airplane time on flying. Always follow your CFI, current FAA publications and the controller on the actual frequency.
About 4,700 US airports from the FAA's own airport data, updated every 28 days. Lessons use your field's real runways and frequencies, the fields near it, and the closest towered airport for your first tower calls.
No. You talk only while you hold the button, and your iPhone turns the speech into text to grade it (on the device where it can, otherwise through Apple's speech service). We never receive your audio or what you said. How your data is handled
Tell the app where you are (taking lessons, soloed, private pilot, instrument rated, or getting back into flying) and it starts you at the right stage. Earlier stages stay open for review.
No. There's nothing to sign up for. Your progress lives on your iPhone, and Pro is tied to your Apple Account, so Restore Purchases brings it back on a new phone.
Against the phraseology in the AIM, AC 90-66C and the controllers' handbook, JO 7110.65. Safety-critical items like runway numbers, hold-short and your callsign cap the score if they're wrong, and every correction shows its source.
iPhone first, on iOS 26. Join the list and we'll tell you if that changes.
The website practice app has closed, and the iPhone app replaces it with a rebuilt course. Progress from the website doesn't carry over. To delete your old account, see Delete your account. Any questions: support@cloudytower.com.
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Cloudy Tower