# Intervals vs HRV

The clearest difference is in-app purchases: Intervals at none against HRV's 8. Intervals also leads on iOS requirement (11.0 vs 18.6). HRV's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. HRV sells 5 one-off in-app purchases. Intervals asks for nothing beyond the download.

## The numbers

| Metric | Intervals | HRV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (7 ratings)](https://appshunter.io/ios/app/hrv-tracker/id6746576506/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 6 weeks |
| Monetization | — | Free |
| Size | 36 MB | 14 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Cloud Geo LLC](https://appshunter.io/developer/1689681632) | [Philippe Gerin](https://appshunter.io/developer/1817452297) |

## What reviewers say

### Intervals

[App page](https://appshunter.io/ios/app/intervals-timing-activities/id6449558648)

**Features:** macOS Compatibility

**In-app purchases:** none


### HRV

[App page](https://appshunter.io/ios/app/hrv-tracker/id6746576506)

This app analyzes heart rate variability from Apple Health and Apple Watch to provide actionable insights into your daily stress, energy levels, sleep quality, and recovery. It uses scientific visualizations and dual HRV metrics to help you understand your autonomic nervous system activity.

**Highlights:** Dual HRV metrics (SDNN + RMSSD), All-day stress curve, Energy (Body Resources) reserve tracking, Nightly Sleep Score, Personalized Recovery score, Interactive trend charts, Apple Watch complications

**Features:** Apple Watch app

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bronze Supporter | $1.99 | one-time |
| Bronze Supporter Tier | $1.99 | one-time |
| Silver Supporter | $4.99 | one-time |
| Gold Supporter | $11.99 | one-time |
| Platinum Supporter | $44.99 | one-time |


## Frequently asked questions

### Is Intervals free?

Intervals is free to download, with no in-app purchases.

### Is HRV free?

HRV is free to download, with in-app purchases available.

### Do Intervals or HRV have ads?

Intervals shows ads; HRV does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*