# Steth IO vs HD Steth

The clearest difference is review sentiment: Steth IO at 80% against HD Steth's 0%. Steth IO also leads on rating (4.2 vs 2.0) and ratings volume (13 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Steth IO holds the better App Store score, 4.2 against 2.0. That said, the two scores are not equally well evidenced: Steth IO has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of Steth IO's written reviews are positive against 0% of HD Steth's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 9, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Steth IO | HD Steth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (13 ratings)](https://appshunter.io/ios/app/steth-io/id961190182/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/hd-steth/id1565203803/reviews) |
| Number of ratings | **13** | 1 |
| Positive reviews | **80.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 63 MB | 22 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [StratoScientific, Inc.](https://appshunter.io/developer/961190181) | [HD Medical, Inc](https://appshunter.io/developer/1565203805) |

## What reviewers say

### Steth IO

[App page](https://appshunter.io/ios/app/steth-io/id961190182)

Record and visualize biological sounds using specialized hardware. This application transforms your device into a tool for capturing and analyzing bodily acoustics.

**Highlights:** Record biological sounds, Visualize sound data, Compatible with Steth IO hardware, Analyze bodily acoustics

**In-app purchases:** none


### HD Steth

[App page](https://appshunter.io/ios/app/hd-steth/id1565203803)

This medical app pairs with a smart stethoscope to visualize heart sounds and ECG waveforms simultaneously. It aids in early detection of cardiac anomalies by offering smart amplification and recording capabilities for professional review.

**Highlights:** Integrated ECG and heart sound visualization, Smart amplification for auscultation, Bluetooth connectivity to smart stethoscope, Record and replay cardiac data, Adjustable gain and amplification, Multiple auscultation modes (Bell, Diaphragm, Lung)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Steth IO free?

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

### Is HD Steth free?

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

### Which has better reviews, Steth IO or HD Steth?

Steth IO is rated higher. Steth IO averages 4.2 out of 5 from 13 ratings, while HD Steth averages 2.0 from 1 ratings.

### Do Steth IO or HD Steth have ads?

Neither Steth IO nor HD Steth shows ads.

### Which is updated more often, Steth IO or HD Steth?

Steth IO ships an update every 2 months, and HD Steth every 2 months. Most recently, Steth IO was updated on September 9, 2026 and HD Steth on June 1, 2026.

---

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