Apps like Plank Timer

Here are some great alternatives to Plank Timer by exercisetimer.org :
Plank - 21 Day Challenge
Plank - 21 Day Challenge
★4.6
Plank Workout for Weight Loss
Plank Workout for Weight Loss
★4.7
Plank - Full Body Workout
Plank - Full Body Workout
★5.0
Perfect Plank – Plank Workout
Perfect Plank – Plank Workout
★4.7
Plank Workout at Home
Plank Workout at Home
★4.6
Plank Challenge App: Workout
Plank Challenge App: Workout
★5.0
Plank Challenge: Core Workout
Plank Challenge: Core Workout
★4.9
Plank workout BeStronger
Plank workout BeStronger
★4.2
PlankFit: Core Workout Pro
PlankFit: Core Workout Pro
★4.5
Plank Workout 30‑Day Core Plan
Plank Workout 30‑Day Core Plan
★4.5
Plank 30 days challenge
Plank 30 days challenge
★4.6
squat plank lunge challenge
squat plank lunge challenge
★4.5
30 Days Plank Challenge
30 Days Plank Challenge
★4.6
30 Day Fitness Challenge
30 Day Fitness Challenge
★4.8
Plank Challenge exercises
Plank Challenge exercises
★4.4
Interval Timer - HIIT & Tabata
Interval Timer - HIIT & Tabata
★4.7