Graded by rules, not AI, so the feedback is always consistent. Digits and words both count: "08R" or "zero eight right".
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Cheat sheet
0 zero · 1 one · 2 two · 3 tree · 4 four · 5 fife · 6 six · 7 seven · 8 eight · 9 niner · . decimal
5000 → "fife thousand" · 39 → "tree niner" · 08R → "zero eight right" · 121.9 → "one two one decimal niner"
The AI plays the controller and may occasionally slip. The readback drills are the reliable reference. Simulation training only, not for real-world flight.
AI
The AI controller and tutor use the built-in Worker, so there is nothing to set up.
Voices
Voices come from your browser. If one sounds robotic, pick another, ideally a "natural" or "neural" one.