# Cardio Rings vs Solfeggio Waves

The clearest difference is price: Cardio Rings at Free against Solfeggio Waves's $1.99. Cardio Rings also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). Solfeggio Waves's advantage is rating (5.0 vs 2.0) and ratings volume (3 vs 1). On ads and in-app purchases there is nothing between them.

Cardio Rings is free to download; Solfeggio Waves costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Solfeggio Waves holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

## The numbers

| Metric | Cardio Rings | Solfeggio Waves |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/cardio-rings-hr-zone-tracker/id6741053453/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/solfeggio-waves/id6761736623/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Monetization | **Free** | Paid |
| Size | 1 MB | 2 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Aryan Bhasin](https://appshunter.io/developer/1471527185) | [Dustin Cohick](https://appshunter.io/developer/1891177026) |

## What reviewers say

### Cardio Rings

[App page](https://appshunter.io/ios/app/cardio-rings-hr-zone-tracker/id6741053453)

This app helps you achieve your heart health goals by tracking your workouts in different heart rate zones. Set weekly targets, monitor your progress as you close rings, and improve key metrics like resting and maximum heart rate.

**Highlights:** Set weekly heart rate zone targets, Close rings by exercising, Track max and resting heart rate, Improve endurance and fat oxidation, Monitor blood circulation

**Features:** Apple Watch app

**In-app purchases:** none


### Solfeggio Waves

[App page](https://appshunter.io/ios/app/solfeggio-waves/id6761736623)

This app uses ancient Solfeggio frequencies and modern binaural beats to promote calm and clarity. Choose from various frequencies and brainwave states, layered with ambient sounds, for meditation, sleep, or focus.

**Highlights:** 9 Solfeggio frequencies, Adjustable brainwave states, Precise beat frequency control, Wind ambience option, Background audio playback, Real-time sine wave generation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Cardio Rings free?

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

### Is Solfeggio Waves free?

Solfeggio Waves costs $1.99, with no in-app purchases.

### Which has better reviews, Cardio Rings or Solfeggio Waves?

Solfeggio Waves is rated higher. Cardio Rings averages 2.0 out of 5 from 1 ratings, while Solfeggio Waves averages 5.0 from 3 ratings.

### Do Cardio Rings or Solfeggio Waves have ads?

Neither Cardio Rings nor Solfeggio Waves shows ads.

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