Convenient but may be limited to that specific ecosystem's family sharing. How to Retrieve a Lost Key
Unlike many modern software tools, Synthesia is not a subscription . You buy it once and get all future updates for free. Synthesia Unlock Key Code
If you purchase the key directly from the Synthesia website, it works across Windows, Mac, Android, and iOS devices simultaneously. Official Pricing & Licensing Convenient but may be limited to that specific
You can import and practice any MIDI or MusicXML file you find or create. it works across Windows