# Sensor Data Recorder vs HemiPhysioData

The clearest difference is review sentiment: HemiPhysioData at 100% against Sensor Data Recorder's 50%. 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.

Sensor Data Recorder ships an update every 26 months, HemiPhysioData every 18 months. The most recent releases landed on June 6, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Sensor Data Recorder | HemiPhysioData |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sensor-data-recorder/id1438400138/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 18 months** |
| Monetization | Free | Free |
| Size | 8 MB | 2 MB |
| Requires iOS | 14.0 | **13.2** |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Nils Ackermann](https://appshunter.io/developer/1308556492) | [Moez ur Rehman](https://appshunter.io/developer/1502416676) |

## What reviewers say

### Sensor Data Recorder

[App page](https://appshunter.io/ios/app/sensor-data-recorder/id1438400138)

This utility app records gyroscope, accelerometer, and audio data from your device. Export your recorded data as CSV or M4A files for further processing, particularly for machine learning applications. Your data remains private and is only accessible on your device.

**Highlights:** Record gyroscope and accelerometer data, Record audio simultaneously, Label recordings for ML workflow, Adjust data capture frequency, Download or email data, Export as CSV and M4A

**Features:** macOS Compatibility

**In-app purchases:** none


### HemiPhysioData

[App page](https://appshunter.io/ios/app/hemiphysiodata/id1502983547)

This app collects raw and processed sensor data from your Apple Watch, including accelerometer and gyroscope readings. It allows you to select activities, preferences, and then exports the data as a CSV file to your iPhone for analysis. Ideal for tracking movement and Range of Motion (ROM) measurements.

**Highlights:** Collects raw and processed sensor data, User-friendly activity selection, Exports data as CSV files, Supports accelerometer and gyroscope, Configurable sampling rate, Haptic feedback for logging alerts

**In-app purchases:** none


## Frequently asked questions

### Is Sensor Data Recorder free?

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

### Is HemiPhysioData free?

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

### Do Sensor Data Recorder or HemiPhysioData have ads?

Neither Sensor Data Recorder nor HemiPhysioData shows ads.

### Which is updated more often, Sensor Data Recorder or HemiPhysioData?

Sensor Data Recorder ships an update every 26 months, and HemiPhysioData every 18 months. Most recently, Sensor Data Recorder was updated on June 6, 2026 and HemiPhysioData on June 4, 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.*