L3LAB / DESIGN NOTES
App V2: practice and review
9:41SONA FIELD
Try the app
Try the app
Prepare
Check the connection and contact separately.
Walk through a full practice session below.
Watch the app recording
App recording (Simplified Chinese interface)Walk through a full practice session below.
01An app you can operate
App V2 has four main views: practice, signals, records and device. This site lets you operate the bilingual practice flow in the browser.
02Connection and contact are different
The app shows wireless connection and signal-contact quality separately, so you can see at a glance whether the device is connected and well placed.
03Notes that are yours
Pause a practice at any time and leave your own note on the device to pick up next time.
Source material
Sona Field App V2 design documents, 22 Oct 2026.