# Endurance Calculators — Pace & Power Calc for Athletes

> Pace & Power Calc for Athletes (iPhone/iPad app by John Oneill.)

- Source: https://appshunter.io/ios/app/endurance-calculators/id6770125840 (this page in markdown: same URL + `.md`)
- Developer: [John Oneill](https://appshunter.io/developer/1896717541)
- Category: Health & Fitness, Sports
- Price: $0.99
- Age rating: 4+
- Requires: iOS 15.0 · 2 MB
- Languages: American English
- Released: 2026-05-27
- Data updated: 2026-07-27
- User reviews in markdown: https://appshunter.io/ios/app/endurance-calculators/id6770125840/reviews.md

## What is Endurance Calculators?

Endurance Calculators is a free toolkit for endurance athletes covering running, cycling, and swimming.
RUNNING
• Pace converter (min/mile ↔ min/km)
• Race finish time predictor
• VDOT training zones
• Altitude pace adjustment
CYCLING
• Power & HR training zones
• Watts per kilogram calculator
• Altitude power adjustment
• Distance & speed converter
SWIMMING
• Pace converter (per 100m / 100yd)
• Pool course conversion (SCY, SCM, LCM)
Built for athletes who want quick answers without the math. Works offline.


## Version history (last 2 releases)

### 1.0.1 — 2026-07-20

Fresh new light look, more accurate altitude race-time conversions, and a cleaner layout on newer iPhones.

### 1.0 — 2026-05-28

No release notes.

## Related topics

[endurance calculators](https://appshunter.io/ios/topics/endurance-calculators)

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*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 2026-07-27.*