Features & Capabilities

Sensor Logger is a mobile data-collection toolkit for researchers, educators, and curious minds. It supports iPhone, Apple Watch, iPad, and AirPods, capturing data from accelerometer, gyroscope, GPS, microphone, camera, Bluetooth, battery, and screen brightness. With one-tap recording, background logging, and interactive plots, you can log, view, and organize sensor measurements with ease. Exports include CSV, JSON, Excel, KML, SQLite, and more, plus optional real-time streaming via HTTP or MQTT.

Use Studies to collect data from multiple users and publish data-driven Stories with online dashboards. The app emphasizes privacy by keeping data on-device by default, with optional cloud storage for studies. The built-in rule engine and customization options enable advanced workflows for STEM research, classroom demonstrations, and field experiments.

User Growth & Download Statistics

By:
Choi Tsz Hei
Rating:
4.80
(102)
1 new ratings
Version:
1.59 Last updated: 2026-05-12
Version code:
885500737
Creation date:
2020-09-27
Compatible devices:
Size:
72.64MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-05
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Choi Tsz Hei
Apple Apps Store
https://apps.apple.com/us/app/sensor-logger/id1531582925
Website:
https://www.tszheichoi.com/sensorlogger

User Reviews

The app seems much better designed than many of the competing sensor apps available. That said, after trying it out, I’m not comfortable with it from a privacy perspective. It asks for permission for precise location and Motion & Fitness, even when you aren’t collecting that data. When you say no, it leaves bright yellow triangles on the screen, presumably intended to scare or annoy the user into granting permission. There is a privacy policy in the app, but it’s rendered in light grey text on a white background and is unreadable. The data this app collects is sensitive, so trust is critical, and I don’t feel like I can trust this app.
by an*****, 2024-08-14

This app may be life-changing for me, more on that in a bit. First I have to say how pleasant it is to use. The UI is easy on the eyes, and the controls are fairly intuitive given how much functionality and flexibility it packs in. Just reading through the list of measurements that my iPhone can collect is already educational and fun. I’m making a list of people who I need to tell about this, they will love it! But I’m not playing around, I’m on a mission. I have weather-sensitive fibromyalgia, and the science of how weather affects the health is not moving fast enough for me given how much I suffer day-to-day. I have been using an app that is useful for keeping charts of air pressure changes over time, but it has a conventional meteorological orientation. For starters, I live a little more than a mile above sea level and apps that insist on reporting my 830 mbar as 1030 mbar just… irritate me. More to the point, this app gives me total control over how frequently observations are collected. I’ve been using it for one day, and I’m already seeing patterns emerge that would never show up in the best data I could get before. (Not the ones I expected, but the ones that seem obvious in retrospect, which is always a good sign when you’re looking for answers.)
by Ri*****, 2024-01-01

Very reliable. But for some reason I can not record motion data from AirPods. Can you look into this?
by Mi*****, 2023-11-22
View all user reviews ›

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