Bridge to 10K (B210K) training app.
Supports a list of 18 days, all with individual progress indicators. Select a day to see the steps for that day, proceed to get a countdown click with instructions for each step.
Open source, check description for github link.

Couch to 5K (C25K) Training app.
Multi lanauge support: English, Français, Deutsche, Español.
Supports a list of 24 days, all with individual progress indicators.
Select a day to see the steps for that day, proceed to get a countdown clock with feedback for each step along the way.
Open source, check description for github link.