iCountTimer

Workout timer & counter which is simple, practical and classy.
Whether it's interval training, yoga, home workouts, sports, strength training, HIIT or other fitness requirements, this app can easily fit in and accelerate your progress. Time your repetitions, forget the count and focus on your moves.
A must-have app for exercise enthusiasts, athletes, trainers, coaches and all the fitness freaks who are passionate about exercising.

Features:
• Timer + Counter combined together
• Save timers/counters as presets organised by activities
• Large clear display with progress bar
• Audio cues
• Smart lock to lock timer screen

This is an ad-supported free version of iCountTimer with basic features. Do check the Pro version for more features.
Pro version features:
• No Ads
• Extended slider limits,
• Input custom values
• Save upto 40 presets
• 5 different themes
• Various choices for alert sounds
• Different counter modes
• Custom start delay
• Calories estimation**
• Health app integration
• Today widget in Notification Center
• Apple Watch app

** The estimated calories are approximate Calories burned for any selected activity based on the MET (Metabolic Equivalent) values for the activity and personal details of individual. Actual energy expenditure may vary.

Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/