Stack: Running Log
Run Happy. Run Fast!
Only for iPhone
Free · In-App Purchases · Designed for iPhone
iPhone
Most training apps overwhelm you with comparisons, arbitrary pace targets, AI-generated summaries, and constant recommendations.
Stack removes the complexity.
What’s left is a clean, focused system that helps you listen to your body and train based on how you actually feel not external metrics.
Train Smarter With Less
- Track fatigue and form in one simple visual chart
- Identify your optimal training zones
- Prevent overtraining and undertraining
- Build consistent routines that support long-term progress
- Judgement free
Stack is deliberately simple. When you remove pressure and unnecessary data, your training becomes more intuitive and sustainable.
Less is more.
Start your 7-day free trial today.
Privacy Policy: https://www.stackapp.run/privacy-policy
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
Bug fix!
The developer, RootCause LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- RootCause LLC
- Size
- 58.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.6 or later.
- iPhone
Requires iOS 15.6 or later. - iPod touch
Requires iOS 15.6 or later. - Mac
Requires macOS 12.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Stack Yearly Subscription ₺999,99
- Stack Monthly Subscription ₺149,99
- Copyright
- © 2026 RootCause LLC. All rights reserved.