Corbyn Running Calculator is a specialized utility for runners to perform race pace, interval, and distance calculations on iOS.
The App DNA
What makes this app unique?
It removes the time-consuming friction of manual math during training sessions, serving runners who prefer a dedicated, focused calculation tool over complex fitness trackers.
For Runners who need to perform training and race pace calculations quickly without manual math.
What does it look like?
Key features
Calculates required pace for a specific target race time and distance.
Computes average rep time for multiple interval session segments.
Reverse-engineers the pace required for a competitor to achieve a specific finish time.
How much does it cost?
The app operates as a free, ad-free utility with no monetization gates.
Velocity
Dormant developmentaccessibilityplatform expansionShow more...
Corbyn Running Calculator has been inactive for 3,336 days, showing no development momentum or updates in over nine years. The last release focused on platform compatibility and accessibility improvements, but the project has since entered a state of total stagnation. There is no evidence of ongoing support, feature development, or maintenance.
Who built it?
User Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Corbyn Running Calculator - A run time calculator
How's the Utilities market?
Corbyn Running Calculator maintains a niche presence as a free utility with a 5-star rating based on a small sample of 2 reviews. Its lack of updates since 2017 places it outside the competitive cycle of modern, wearable-integrated training tools.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for Corbyn Running Calculator - A run time calculator
Where is it heading?
The fitness utility market is consolidating around apps that offer automated data sync and wearable integration. Corbyn Running Calculator remains in maintenance mode, which will likely lead to further decline as users migrate to tools that reduce manual input.
- The nine-year development hiatus prevents integration with current iOS standards and wearable ecosystems, leading to inevitable user attrition.
The SWOT
- Focused utility for specific running calculations
- Add export function for training logs
Next best moves
Audit feature parity against current training apps because the nine-year update gap risks total obsolescence → determine if a pivot is viable
The counter-intuitive read
The app's simplicity is its only remaining asset…
Read the full takeSince the last report: The app's development status remains unchanged, but internal strategic planning has shifted from a recommendation to sunset the product to a requirement for a feature parity audit.
Bottom line
Corbyn Running Calculator serves a specific manual-entry need, but its nine-year development gap makes it a legacy tool in a market that now demands automated wearable integration.
Unlock 2 critical frictions, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is Corbyn Running Calculator free to use?
Does Corbyn Running Calculator sync with my running watch?
What is the difference between this and a standard fitness tracker?
Sources
- [1] App Store, source
Report last updated