Stack: Running Log
Run Happy. Run Fast!
About
This app offers a streamlined approach to running training by focusing on how you feel rather than external metrics. It helps you track fatigue and form, identify optimal training zones, and build sustainable routines to prevent over or undertraining.
What's New in Stack
2.0.2
February 26, 2026
Bug fix!
Subscription plans
Stack Monthly Subscription
Subscription to Stack, billed monthly
Developer apps
FAQ
What is Stack's free trial?
Stack offers a 7-day free trial for all its subscription plans. This allows users to experience the full features before committing to a monthly or yearly subscription.
How much does Stack cost?
Stack offers a monthly subscription for $2.99 and a yearly subscription for $19.99. Both plans include a 7-day free trial.
What devices does Stack support?
Stack is currently supported on iPhone and iPod devices. It is designed for iOS users looking to enhance their running experience.
How often is Stack updated?
The latest version of Stack is 2.0.2, which was last updated on February 26, 2026. This indicates regular updates to improve the app's functionality and user experience.
What is the age rating for Stack?
Stack has an age rating of 4+. This means it is suitable for a wide range of users, including children, and does not contain mature content.
Does Stack have ads?
No, Stack is ad-free. Users can enjoy a seamless training experience without any advertisements interrupting their sessions.
What makes Stack different from other running apps?
Stack removes the complexity found in many training apps, such as arbitrary pace targets and AI summaries. It focuses on helping users listen to their body and train based on how they feel, promoting intuitive and sustainable progress.
Can I track my fatigue and form with Stack?
Yes, Stack allows you to track fatigue and form in one simple visual chart. This feature helps you understand your body's response to training and prevent overtraining.
