Cadenza App Teaches Morse Code on Mobile
Independent developer Ivan Terekhin has released a Morse code trainer for iPhone, iPad and Android that works offline without an account.
Updated on Nov. 7, 2026 in Language Learning
Trifoil Trailblazer has released Cadenza, a Morse code training app for iPhone, iPad and Android. The app uses the Koch method with Farnsworth spacing and works offline without requiring an account.
Why it matters
Morse code remains a practical skill for amateur radio operators and others who rely on low-bandwidth communication. A free, offline-capable trainer lowers the barrier for learners who want structured practice on their phones.
The app is free to download, with optional monthly, annual or lifetime Pro purchases that add callsign practice, simulated QSOs, pileups, head copy and sending practice. Sending exercises work with an on-screen key or a straight key or paddle connected through a compatible USB or Bluetooth keyboard adapter.
The players
Ivan Terekhin
Ivan Terekhin is the independent developer behind Cadenza and the Trifoil Trailblazer studio that publishes it.
The details
Cadenza begins learners with two characters played at speed with wider gaps, adding new characters as accuracy improves. The free version also includes a reference covering prosigns and Q-codes, a two-way Morse translator, and a microphone decoder.
Timeline
Cadenza was released on November 7, 2026.
Learning Methods
Cadenza builds on the Koch method, which introduces Morse characters progressively and is paired here with Farnsworth spacing to slow the pace of individual characters while keeping overall speed. Its mobile, offline design extends a technique traditionally practiced with human instructors or audio courses.
Learners can practice Morse code on iPhone, iPad or Android without creating an account or needing an internet connection. The free tier covers core alphabet, number and punctuation training, and optional Pro upgrades are available for those who want callsign and simulated contact practice.
The takeaway
Practicing short sessions with characters you are still learning builds recognition speed more reliably than rushing through a full alphabet at once. Pairing app practice with a sending key, where available, adds the hands-on dimension that listening alone cannot provide.
Further reading
Explore more on Language Learning for related study methods.
More information
Download and learn more at the Cadenza Morse code training app website.
Source note: This article includes information reported by Hamweekly.
