SweetSleep vs Heart Graph
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SweetSleep
This application uses advanced digital audio synthesis technology to adjust sound wave frequencies. It aims to help users achieve an optimal brain state for relaxation and passion, empowering them to manage their well-being without medication.
- Digital audio synthesis
- Sound wave frequency adjustment
- Brain state optimization
- DIY well-being management
- Passion and relaxation enhancement
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[Sweet Sleep] is supported by the Medisound laboratory which is concentrate on the research of BBT biological effect, this software adopts the up to date synthesize technology of digital audio, aiming at the specific goal to delicate adjustment the frequency of sound wave, and to assist inducing the brain to access the optimal situation, use the software to tap your potential, reappearing your passion. Become a healthcare doctor of yourself, now DIY and say goodbye to the pills!
Heart Graph
Visualize your heart rate data stored in your health app. See average, minimum, and maximum heart rate values presented in tables or graphs. Export your heart rate data to a CSV file for further analysis.
- Visualize heart rate data
- View average, min, max heart rate
- Data presented in tables and graphs
- Export heart rate data to CSV
- Show workout heart rate on graph
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Heart Graph app allows you to show your heart rate data that stored in Health app. Heart Graph app allows you to see average, minimal and maximum values of your heart rate in the form of the table or graph. With a Heart Graph you can export heart rate data in a CSV-file. Also you can show your workouts heart rate data on a graph.
Screenshots
Verdict
The clearest difference is review sentiment: Heart Graph at 86% against SweetSleep's 0%. Heart Graph also leads on rating (4.6 vs 1.0) and update cadence (weekly vs every 6 weeks). SweetSleep's advantage is price (Free vs $4.99). On ads, in-app purchases, monetization model and device support 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
SweetSleep is free to download; Heart Graph costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Heart Graph holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Heart Graph has 49 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of SweetSleep's written reviews are positive against 86% of Heart Graph's.
SweetSleep ships an update every 6 weeks, Heart Graph weekly. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.
| Parameter | SweetSleep | Heart Graph |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 1.0 (4 ratings) | 4.6 (49 ratings) — better |
| Positive reviews | 0.0% of reviews | 86.4% of reviews — better |
| Number of ratings | 4 | 49 — better |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 50 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Omesoft | Ruslan Kimaev |
Customer experience
SweetSleep
Heart Graph
In-app purchases
SweetSleep
No in-app purchases
Heart Graph
No in-app purchases
