DuoTecho · 12 October 2026

Support

Need help with DuoTecho? Email [email protected] with your device model, app version and what you were trying to do. Screenshots are helpful, but remove private information first.

Progress is stored on your device in the initial version. Resetting progress or removing app data clears that installation's learning history. External project tools may require separate accounts, subscriptions or hardware. DuoTecho does not include those services or provide support for their billing.

If a lesson is outdated or a source link no longer works, send the lesson title and the issue. Tools change, and reports help us keep explanations accurate.