Running Writings Lab
Running Writings Lab is made and published by Running Writings. AppBrain is an independent app data site and isn't affiliated with Running Writings. The app name, icon, screenshots and description belong to Running Writings and are shown as published on the App Store.
AppBrain's verdict
- Best rank
- #1
- Top Paid, United States
- Last updated
- October 23, 2026
Rankings
App Store top charts- Highest rank
- #1
- Chart
- Top Paid
- Sports
- Country
- United States
App Store Rankings for Running Writings Lab
Top rankings
| Rank | Country | Category | List |
|---|---|---|---|
| 1 | United States | Sports | Top Paid |
| 1 | Canada | Sports | Top Paid |
| 1 | United Kingdom | Sports | Top Paid |
| 1 | Iran | Sports | Top Paid |
| 2 | Australia | Sports | Top Paid |
| 5 | Germany | Sports | Top Paid |
| 3 | Brazil | Sports | Top Paid |
| 3 | Denmark | Sports | Top Paid |
| 3 | Finland | Sports | Top Paid |
| 3 | Sweden | Sports | Top Paid |
Ranking history in United States
Releases
Updates seen on the App Store- Version
- 1.0.0
- Launched
- October 2026
No changelog data
User feedback
Ratings and reviews on the App StoreComments on Running Writings Lab for iOS
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Technology
Found in the app by AppBrain- Price
- $9.99
- App size
- 4.50 MB
- Content rating
- Everyone
Technologies used by Running Writings Lab
About the app and developer
About Running Writings Lab
Running Writings Lab is a sports app developed by Running Writings.
User Ratings
The app has no ratings yet.
App Information
Running Writings Lab costs $9.99. The app size is 4.50 MB. The latest version available is 1.0.0. The last update was on October 23, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since October 2026.
Developer information for Running Writings
Address:
Frequently asked questions about Running Writings Lab
Is Running Writings Lab free?
No. Running Writings Lab costs $9.99 on the App Store.
Is Running Writings Lab still available?
Yes. Running Writings Lab is on the App Store, and the last update we saw was on October 23, 2026.
How large is Running Writings Lab?
Running Writings Lab is 4.50 MB.
Is Running Writings Lab suitable for children?
App Store rates the content of Running Writings Lab as suitable for everyone.
Who made Running Writings Lab?
Running Writings Lab was developed by Running Writings. It is listed in the sports category on the App Store.
Store listing
By Running Writings, from the App Store
Description by Running Writings Written by the developer, not by AppBrain. Click to read.
PACING & PREDICTION
• Race Pace: finish times, splits, and pace conversions for any track, XC, or road distance, including custom distances.
• Pace Percentage: calculate paces for Canova-style percentage-based workouts.
• Power Law: predict your performances across a wide range of race distances using a power law model.
THRESHOLD & PHYSIOLOGY
• Critical Speed: fit a research-grade critical speed model using race or time trial performance.
• CV, LT2, and VO₂max Pace: calculate physiologically based workout paces from any race distance 10k and under.
• LT1 and Zone 2 Pace: get first lactate threshold and Zone 2 pace from a recent 5k result.
TERRAIN & CONDITIONS
• Grade-Adjusted Pace: get GAP adjustments for uphills and downhills.
• Heat-Adjusted Pace: adjust long workout paces for heat and humidity.
• Wind-Adjusted Pace: see what a headwind costs and a tailwind gives back on point-to-point road runs and races.
• Track Wind Adjustments: calculate the net effect of wind around the oval, where every lap has a headwind and a tailwind.
Every calculator is built on published research, with the sources and model details one tap away.
BUILT FOR IPHONE AND IPAD
• Pin your favorite calculators to the top of the menu, and long-press the app icon to jump straight to them from your Home Screen.
• Set paces and times using haptic dials.
• Built-in memory to remember your workout and race paces between sessions.
• Set appearance to dark mode, light mode, or auto.
• Works completely offline. No account, no sign-in.
THE DEAL
One purchase enables every calculator forever. No ads, no subscription, no extra "pro" tier, no tracking, and no analytics. You get the same capabilities as the calculators from Running Writings web tools plus iOS-specific features: offline functionality, haptic dials, input memory, and one-tap access from your Home Screen. Your purchase funds the ongoing research that will power even more scientific running calculators.
WHO IT'S FOR
This app is designed for all runners who take their training and racing seriously. Whether you're a marathoner, track athlete, cross country runner, or trail runner, you'll find the tools you need to plan effective workouts and personal-best races.
Built by John J. Davis, Ph.D. - coach, scientist, author of Marathon Excellence for Everyone, and founder of RunningWritings.com.