Last updated 6 November 2026
Terms of use
Helin is sold on the App Store under Apple’s standard licence agreement for apps (the Licensed Application End User Licence Agreement). There are no extra terms, no subscription and no account.
Open-source code in Helin
Helin is built on the work of others, used under the MIT licence:
- Mutable Instruments Plaits, by Emilie Gillet: the swarm, particle, chord, FM, noise and speech engines.
- Mutable Instruments Elements, by Emilie Gillet: the bowed strings, breath and modal resonator.
- Mutable Instruments Rings, by Emilie Gillet: the Resonator.
- Airwindows ToTape8, by Chris Johnson: the Drive’s Tape mode.
Each node’s ? page in the app names the code it uses. The full licence texts ship with the app.
Contact
Questions go to Tanel Teemusk at hello@teemusk.com.
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