Comparison

Cardio Rings vs Solfeggio Waves

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Cardio Rings

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
Read full description

Interested in longevity and heart health? Then you know the importance of training in different heart rate zones. Meeting weekly targets for each zone can improve endurance, fat oxidation, blood circulation and so much more. It's a workout for your heart muscle, so you're less likely to have heart issues. Cardio Rings helps you meet your heart health goals every week 1. Set Weekly Targets: Choose how long you want to train in each zone 2. Close the Rings: Keep exercising and watch your rings fill up 3. Improve your heart health: Track improvements in metrics like max and resting HR

About

Solfeggio Waves

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
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Solfeggio Waves helps you reach deeper states of calm and clarity using the ancient Solfeggio frequencies combined with modern binaural beats. Choose from 9 classic Solfeggio tones (174 Hz to 963 Hz) and layer them with brainwave entrainment — Delta for deep sleep, Theta for meditation and creativity, Alpha for relaxed focus, Beta for concentration, or Gamma for peak mental performance. Add gentle wind ambience to create a rich, immersive soundscape. The clean, distraction-free interface makes it effortless to find your perfect state whether you're meditating, working, falling asleep, or practicing yoga and breathwork. Features: • 9 authentic Solfeggio frequencies • Adjustable brainwave states (Delta, Theta, Alpha, Beta, Gamma) • Precise beat frequency control • Optional gentle wind ambience • Background audio support — continues playing with screen locked • Pure real-time sine wave generation — no loops or ads Simple, powerful, and designed for daily use. Whether you're new to sound healing or a seasoned practitioner, Solfeggio Waves gives you high-quality audio tools to support relaxation, focus, and wellbeing. Download now and tune into deeper peace and presence.

Screenshots

Solfeggio Waves4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

Scorecard6 real differences · 4 level
Cardio Rings versus Solfeggio Waves: the parameters behind the verdict, then further details
ParameterCardio RingsSolfeggio Waves
PriceFree — better$1.99
Rating2.0 (1 ratings)5.0 (3 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings13 — better
Update frequencyEvery 10 days—
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS13.0 — better18.0
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperAryan BhasinDustin Cohick

Customer experience

Cardio Rings

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Solfeggio Waves

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Cardio Rings

No in-app purchases

None

Solfeggio Waves

No in-app purchases

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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