# StetSAFE vs StethAid Lungs

The clearest difference is ads: StethAid Lungs at none against StetSAFE's shown. StetSAFE's advantage is update cadence (every 3 months vs every 7 months) and iOS requirement (13.0 vs 15.0). On price, 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.

StetSAFE ships an update every 3 months, StethAid Lungs every 7 months. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | StetSAFE | StethAid Lungs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stetsafe/id1557467813/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | Ad-supported | — |
| Size | 49 MB | 18 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [KuartisMed Ltd Sti](https://appshunter.io/developer/598946138) | [Auscultech DX](https://appshunter.io/developer/1532371245) |

## What reviewers say

### StetSAFE

[App page](https://appshunter.io/ios/app/stetsafe/id1557467813)

This medical device uses UV-C light to disinfect stethoscope diaphragms, neutralizing harmful bacteria in minutes. Connect to a mobile app to monitor disinfection status and usage details.

**Highlights:** UV-C light disinfection, Neutralizes bacteria, Mobile app connectivity, Disinfection status monitoring, Usage details tracking

**In-app purchases:** none


### StethAid Lungs

[App page](https://appshunter.io/ios/app/stethaid-lungs/id1605130701)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StetSAFE free?

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

### Is StethAid Lungs free?

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

### Do StetSAFE or StethAid Lungs have ads?

StetSAFE shows ads; StethAid Lungs does not.

### Which is updated more often, StetSAFE or StethAid Lungs?

StetSAFE ships an update every 3 months, and StethAid Lungs every 7 months. Most recently, StetSAFE was updated on October 22, 2026 and StethAid Lungs on October 25, 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.*