# ReplyMD vs Sensor Bio

The clearest difference is update cadence: Sensor Bio at weekly against ReplyMD's every 3 weeks. ReplyMD's advantage is monetization model (free vs ad-supported) and iOS requirement (15.1 vs 18.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for ReplyMD against 5.0 for Sensor Bio. Both are backed by a comparable volume of ratings — 4 and 10 respectively.

ReplyMD ships an update every 3 weeks, Sensor Bio weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ReplyMD | Sensor Bio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/replymd/id6741511114/reviews) | [5.0 (10 ratings)](https://appshunter.io/ios/app/sensor-bio/id6745620963/reviews) |
| Number of ratings | 4 | **10** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 66 MB | 166 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Trial Partners Operating Co LLC](https://appshunter.io/developer/1794507768) | [Sensr Biotech, LLC](https://appshunter.io/developer/1812560181) |

## What reviewers say

### ReplyMD

[App page](https://appshunter.io/ios/app/replymd/id6741511114)

Connect with verified healthcare professionals and join peer-to-peer communities for reliable health information and support. Ask questions, share experiences, and access curated articles to manage your health journey.

**Highlights:** Verified healthcare professionals, Peer-to-peer communities, Meaningful discussions, Curated articles and resources, Connect with others, Share knowledge

**Features:** macOS Compatibility

**In-app purchases:** none


### Sensor Bio

[App page](https://appshunter.io/ios/app/sensor-bio/id6745620963)

This platform uses biosensors to remotely monitor key health metrics like heart rate, HRV, and sleep stages. It provides personalized insights and is designed for general fitness and wellness purposes.

**Highlights:** Clinical-grade biometrics, Validated heart rate and HRV tracking, Detailed sleep stage analysis, Remote monitoring capabilities, Personalized health insights

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

**In-app purchases:** none


## Frequently asked questions

### Is ReplyMD free?

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

### Is Sensor Bio free?

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

### Which has better reviews, ReplyMD or Sensor Bio?

ReplyMD and Sensor Bio are both rated 5.0 out of 5 on the App Store, from 4 and 10 ratings respectively.

### Do ReplyMD or Sensor Bio have ads?

Neither ReplyMD nor Sensor Bio shows ads.

### Which is updated more often, ReplyMD or Sensor Bio?

ReplyMD ships an update every 3 weeks, and Sensor Bio weekly. Most recently, ReplyMD was updated on October 24, 2026 and Sensor Bio on October 28, 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.*