# DrStemo vs Psyzone Sonics

The clearest difference is update cadence: Psyzone Sonics at every 3 weeks against DrStemo's every 2 months. DrStemo's advantage is iOS requirement (10.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

DrStemo ships an update every 2 months, Psyzone Sonics every 3 weeks. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | DrStemo | Psyzone Sonics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (8 ratings)](https://appshunter.io/ios/app/drstemo/id1660937732/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 7.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 34 MB | 35 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Shanghai Hulu Devices Co Ltd](https://appshunter.io/developer/1053971681) | [Nelson Novaes Neto](https://appshunter.io/developer/1888205775) |

## What reviewers say

### DrStemo

[App page](https://appshunter.io/ios/app/drstemo/id1660937732)

This app pairs with Stemoscope wireless stethoscopes to enhance listening to heart and lung sounds. It is intended for use with the Stemoscope PRO and Stemoscope II devices. Users should consult a doctor for medical decisions, as the app and device are not for self-diagnosis.

**Highlights:** Connects to Stemoscope PRO and II, Record body sounds, Enhance listening experience, FDA cleared device companion, Not for self-diagnosis

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

**In-app purchases:** none


### Psyzone Sonics

[App page](https://appshunter.io/ios/app/psyzone-sonics/id6761194184)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DrStemo free?

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

### Is Psyzone Sonics free?

Psyzone Sonics is free to download, with no in-app purchases.

### Do DrStemo or Psyzone Sonics have ads?

Neither DrStemo nor Psyzone Sonics shows ads.

### Which is updated more often, DrStemo or Psyzone Sonics?

DrStemo ships an update every 2 months, and Psyzone Sonics every 3 weeks. Most recently, DrStemo was updated on October 9, 2026 and Psyzone Sonics on October 1, 2026.

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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.*