# Stack: Running Log — Run Happy. Run Fast! > Simple running log for intuitive, sustainable training based on personal feel. (iPhone/iPad app by RootCause LLC.) - Source: https://appshunter.io/ios/app/stack-running-log/id6752502254 (this page in markdown: same URL + `.md`) - Developer: [RootCause LLC](https://appshunter.io/developer/1759030942) - Category: Health & Fitness - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 15.6 · 56 MB - Languages: American English - Released: 2026-01-12 - Data updated: 2026-09-08 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/stack-running-log/id6752502254/reviews.md ## What is Stack? 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/ ## Key features - Track fatigue and form visually - Identify optimal training zones - Prevent overtraining and undertraining - Build consistent routines - Judgment-free training system - Focus on how you feel ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Stack Monthly Subscription | $2.99 | per month | | Stack Yearly Subscription | $19.99 | per year | ## Frequently asked questions about Stack ### 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. ## Version history (last 4 releases) ### 2.0.2 — 2026-02-26 Bug fix! ### 2.0.1 — 2026-02-24 Minor bug fix ### 2.0 — 2026-02-23 Full overhaul! ### 1.0 — 2026-01-12 No release notes. ## Apps similar to Stack | App | Rating | Price | Category | | --- | --- | --- | --- | | [Running Dashboard - RunMetrics](https://appshunter.io/ios/app/running-dashboard-runmetrics/id6470377524) | 4.4 (15) | Free | Health & Fitness | | [GOGUMA: Visual Running Log](https://appshunter.io/ios/app/goguma-visual-running-log/id6758002358) | — | Free | Health & Fitness | | [NuTrace - Food Transparency](https://appshunter.io/ios/app/nutrace-food-transparency/id6759347751) | — | Free | Health & Fitness | | [Paceboard: Run Builder](https://appshunter.io/ios/app/paceboard-run-builder/id6761879730) | — | Free | Health & Fitness | | [CrossFit Iron Legacy](https://appshunter.io/ios/app/crossfit-iron-legacy/id6474454878) | — | Free | Health & Fitness | | [Gymbo: Gym Log Workout Tracker](https://appshunter.io/ios/app/gymbo-gym-log-workout-tracker/id6756890431) | — | Free | Health & Fitness | ## More apps by RootCause LLC - [RootCause: Food & Symptoms](https://appshunter.io/ios/app/rootcause-food-and-symptoms/id6569263070) - [Chomp: Simple Macro Tracker](https://appshunter.io/ios/app/chomp-simple-macro-tracker/id6740447356) - [Decaf - Quit Caffeine Fast](https://appshunter.io/ios/app/decaf-quit-caffeine-fast/id6751217376) - [HungryOwl: Ingredient Scanner](https://appshunter.io/ios/app/hungryowl-ingredient-scanner/id6751246948) - [One Bag: Smart Packing List](https://appshunter.io/ios/app/one-bag-smart-packing-list/id6760675558) All apps by RootCause LLC: https://appshunter.io/developer/1759030942 ## Related topics [running log](https://appshunter.io/ios/topics/running-log) · [root cause](https://appshunter.io/ios/topics/root-cause) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*