Answer
ETC does not currently offer a version of Eos with native support for Apple Silicon. ETC plans to one day release a Universal app in a future release that natively supports both Apple Silicon and Macs with Intel processors in the future. That being said, Eos v2.9.1 and higher can be run on Apple Silicon through Rosetta 2.
In June 2026, macOS has started issuing an explicit warning to users about this upcoming deprecation when they install Eos. The Eos team is aware of the planned removal of Rosetta 2 with macOS 28.
Additional Info
The first time Eos is launched on Apple Silicon Macs, if you have not previously installed Rosetta for other Intel-based apps, you may receive the following prompt:

After installing Rosetta, ETC recommends rebooting your computer as ETCnomad dongles may not function properly until a reboot is performed.