# Stress Tracker HRV vs Sun Ring

The clearest difference is price: Sun Ring at Free against Stress Tracker HRV's $7.99. Stress Tracker HRV's advantage is iOS requirement (13.0 vs 17.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Sun Ring is free to download; Stress Tracker HRV costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Stress Tracker HRV against 5.0 for Sun Ring. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

## The numbers

| Metric | Stress Tracker HRV | Sun Ring |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/stress-tracker-hrv/id6748257580/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sun-ring/id6751605890/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Paid | **Free** |
| Size | 5 MB | 2 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Alvaro Garcia Pizarro](https://appshunter.io/developer/1822790774) | [Aaron Taylor](https://appshunter.io/developer/1616034086) |

## What reviewers say

### Stress Tracker HRV

[App page](https://appshunter.io/ios/app/stress-tracker-hrv/id6748257580)

Monitor your body's stress levels, sleep quality, and recovery using Heart Rate Variability (HRV) data from your Apple Watch. Gain insights into your mental and physical well-being to make informed decisions about rest and activity.

**Highlights:** Real-time stress tracking via HRV, Daily and weekly stress trend analysis, Recovery Index for bounce-back assessment, Sleep score and optimization insights, On-device data privacy

**Features:** Apple Watch app

**In-app purchases:** none


### Sun Ring

[App page](https://appshunter.io/ios/app/sun-ring/id6751605890)

This app encourages daily sun exposure by using a familiar ring-closing mechanic. Users can customize their daily goals and track progress with watch face complications and notifications. Review historical data to maintain streaks and stay motivated to enjoy the outdoors.

**Highlights:** Gamified daily sun exposure tracking, Customizable daily sun exposure goals, Adjustable 'direct sunlight' lux value, Watch face widgets and complications, Goal completion notifications, Daily progress history and streak tracking

**In-app purchases:** none


## Frequently asked questions

### Is Stress Tracker HRV free?

Stress Tracker HRV costs $7.99, with no in-app purchases.

### Is Sun Ring free?

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

### Which has better reviews, Stress Tracker HRV or Sun Ring?

Stress Tracker HRV and Sun Ring are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Stress Tracker HRV or Sun Ring have ads?

Neither Stress Tracker HRV nor Sun Ring shows ads.

---

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