# Cardio Rounds — Open source heart rate tracker

> Open source heart rate tracker (iPhone/iPad app by Yuval Greenfield.)

- Source: https://appshunter.io/ios/app/cardio-rounds/id6777868430 (this page in markdown: same URL + `.md`)
- Developer: [Yuval Greenfield](https://appshunter.io/developer/1703936106)
- Category: Health & Fitness, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 22 MB
- Languages: American English
- Released: 2026-06-28
- Data updated: 2026-06-29
- User reviews in markdown: https://appshunter.io/ios/app/cardio-rounds/id6777868430/reviews.md

## What is Cardio Rounds?

Cardio Rounds is an open-source heart rate monitoring app designed specifically for treadmill running, interval training, and Brazilian Jiu-Jitsu (BJJ) rounds.

Focus on your performance with a simple, distraction-free interface and beautiful, detailed charts. Cardio Rounds prioritizes your privacy. All data is stored locally on your device, with no sign-ins required, no ads.

Key Features:
• Track workouts with live heart rate charts and time-in-zone analysis.
• Record your rate of recovery.
• Customize your resting and max heart rate for accurate zone calculations.
• View historical stats and compare past performances.
• Connect seamlessly to nearby Bluetooth heart rate monitors.
• Export your data anytime for personal backup or external analysis.


## Version history (last 1 release)

### 1.0 — 2026-06-29

No release notes.

## More apps by Yuval Greenfield

- [You Are The Translator](https://appshunter.io/ios/app/you-are-the-translator/id6463097357)
- [Kat and Noodles](https://appshunter.io/ios/app/kat-and-noodles/id6755672232)
- [DidOne habit and goal tracker](https://appshunter.io/ios/app/didone-habit-and-goal-tracker/id6767774995)

All apps by Yuval Greenfield: https://appshunter.io/developer/1703936106

---

*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 2026-06-29.*