Version 2.6 of the Interval Walking App is now active in the Play Store. The update includes:
vocal prompt when changing pace
setting for volume of beep in app
settings page - you can choose prompts for pace change: voice, beep, or both
6x6-minute walking plan added in addition to the current 3x3-minute workout
Roadmap:
future version will track history of completed workouts
Play Store Link: https://play.google.com/store/apps/details?id=com.jimrgarrison.intervalwalkingtraining