Comparison

SensorLog vs Physics Toolbox Sensor Suite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SensorLog

Record and stream sensor data from your iPhone, iPad, and Apple Watch. Export data in CSV or JSON format, or send it via TCP, UDP, or HTTP requests. Integrates with Core ML models for advanced analysis.

Highlights
  • Log sensor data up to 100Hz
  • Stream data via TCP/UDP or HTTP
  • Export data as CSV or JSON
  • Remote client/server functionality
  • Siri and Shortcuts integration
  • Core ML model support
  • HealthKit data export from Apple Watch
Features
Read full description

With SensorLog you can read sensor data from the iPhone, iPad and Apple Watch. The sensor data can be saved as a file in CSV or JSON format, streamed via TCP/UDP or sent as an HTTP request. The most important functions for iPhone and iPad: - Sensor data can be recorded at up to 100Hz (depending on the iOS device version and sensor type). - Sensor data can be streamed in server or client mode using TCP or UDP. Depending on the network speed and the server or client configuration used, this is possible with up to 100Hz. - Via HTTP(S) GET/POST request, sensor data in JSON format (POST) or form-url encoded (POST and GET) can be transmitted to a REST API with up to 20Hz. - With the SensorLog Remote Client/Server function, an iPad or iPhone can connect as a SensorLog Remote Client to an iPhone or iPad, which takes on the role of SensorLog Remote Server. The client's sensor data can be visualized on the server, and the server can control the clients (start/stop logging, start/stop sending data). - Logging can be started and stopped using Siri and shortcuts. - SensorLog supports Core ML models created with Apple's Create ML app. Log data with SensorLog, train a model with the data in Create ML, load exported models in SensorLog and log the model prediction. Supported Create ML models are: Activity Classifier, Tabular Regressor and Tabular Classifier. - If you have an Apple Watch, HealthKit data such as heart rate, energy used, sleep and movement data can be exported on the watch as a csv or json file and then transferred to your iPhone. Sensor data iPhone / iPad: For sample log files, please visit the SensorLog homepage (link App Support). - CLLocation, CLHeading, CMAccelerometer, CMGyroData, CMMagnetometer, CMDeviceMotion, CMActivity, CMPedometer, CMAltimeter, WLAN and network provider IP addresses, device orientation, battery info, decibels. The most important functions for Apple Watch: - Logging Option 1: Logging duration up to 1 hour Simultaneous logging of all selectable sensor data is supported in the background with up to 50Hz. Individual sensors can be logged with a higher frequency of up to 100Hz. Sending data via HTTP requests is supported. - Logging option 2: Logging duration greater than 1 hour In the background only logging of the accelerometer data with max. 50Hz is supported. In the foreground all sensor data with up to 100Hz. Sending data via HTTP requests is only supported when the app is in the foreground. - Via HTTP(S) GET/POST request, sensor data can be transmitted to a REST API with up to 10Hz in JSON format (POST) or form-url encoded (POST and GET). - The Health Store data feature off the SensorLog Watch app allows you to export HealthKit data like heart rate, energy burned, sleep, and movement data. This data is automatically recorded by your Watch and can be read out and exported by SensorLog as csv or json file and transferred to your iPhone. - Logging can be started and stopped using Siri and Shortcuts. Sensor Data Watch: For sample log files, please visit the SensorLog homepage (link App Support). - CLLocation, CMAccelerometer, CMDeviceMotion, CMActivity, CMPedometer, CMAltimeter, battery info

About

Physics Toolbox Sensor Suite

This app turns your smartphone into a scientific instrument suite, enabling measurement, recording, analysis, and export of real-time sensor data. It offers tools for kinematics, acoustics, light, magnetism, and more, suitable for students, educators, researchers, and hobbyists.

Highlights
  • Real-time sensor data measurement
  • Data recording and analysis
  • Data export functionality
  • Kinematics tools (accelerometer, gyroscope)
  • Acoustics tools (sound meter, oscilloscope)
  • Magnetism tools (compass, magnetometer)
  • AR visualization for magnetic fields and measurements
Features
Read full description

Whether you’re a student, educator, researcher, or hobbyist, Physics Toolbox transforms your smartphone’s built-in sensors into a powerful suite of scientific instruments. Easily measure, record, analyze, and export real-time data for a variety of uses—from classroom experiments to cutting-edge research. KINEMATICS G-Force Meter Linear Accelerometer Gyroscope Inclinometer Motion Visualizer (LiDAR-tracked position and velocity) ACOUSTICS Sound Meter Tone Detector Tone Generator Oscilloscope Spectrum Analyzer Spectrogram LIGHT Light Meter Color Detector Proximeter Stroboscope MAGNETISM Compass Magnetometer Magna-AR (AR visualization of magnetic field vectors) OTHER Barometer GPS - latitude, longitude, altitude, speed, direction, number of satellites Ruler-AR (AR-estimated measurements) COMBINATION Multi Record Roller Coaster GAME Play (data-verified challenges)

Screenshots

SensorLog4 screens
Physics Toolbox Sensor Suite4 screens

Verdict

The call

The clearest difference is price: Physics Toolbox Sensor Suite at Free against SensorLog's $2.99. Physics Toolbox Sensor Suite also leads on update cadence (weekly vs every 2 months) and rating (4.7 vs 4.4). On ads, in-app purchases, monetization model and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Physics Toolbox Sensor Suite is free to download; SensorLog costs $2.99 up front. SensorLog sells 4 one-off in-app purchases and Physics Toolbox Sensor Suite sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Physics Toolbox Sensor Suite holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Physics Toolbox Sensor Suite has 1.8K ratings behind it against 40, so its average is the more settled of the two. Written reviews point the same way: 69% of SensorLog's written reviews are positive against 81% of Physics Toolbox Sensor Suite's.

UpkeepUpdate frequency

SensorLog ships an update every 2 months, Physics Toolbox Sensor Suite weekly. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

Scorecard6 real differences · 4 level
SensorLog versus Physics Toolbox Sensor Suite: the parameters behind the verdict, then further details
ParameterSensorLogPhysics Toolbox Sensor Suite
Price$2.99Free — better
Rating4.4 (40 ratings)4.7 (1.8K ratings) — better
Positive reviews69.0% of reviews80.6% of reviews — better
Number of ratings401.8K — better
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.016.0 — better
Further details — not scored
Size4 MB78 MB
Age rating4+4+
DeveloperBernd ThomasChrystian Vieyra

Customer experience

SensorLog

All ratings40 ratings
Positive82.5%
Neutral2.5%
Negative15.0%
Written reviews126 reviews
Positive69.0%
Neutral7.9%
Negative23.0%

Physics Toolbox Sensor Suite

All ratings1,798 ratings
Positive93.8%
Neutral2.9%
Negative3.3%
Written reviews124 reviews
Positive80.6%
Neutral8.1%
Negative11.3%

In-app purchases

4 purchases

SensorLog

One-time4
  • Buy me a Coffee ...$0.99
  • Spend me an Ice Cream ...$1.99
  • Offer me a glas of Wine ...$5.99
Show 1 more
  • Invite me for a Cocktail ...$9.99
1 purchases

Physics Toolbox Sensor Suite

One-time1
  • Upgrade to Pro$5.99

Questions

Is SensorLog free?
SensorLog costs $2.99, and also offers in-app purchases.
Is Physics Toolbox Sensor Suite free?
Physics Toolbox Sensor Suite is free to download, with in-app purchases available.
Which has better reviews, SensorLog or Physics Toolbox Sensor Suite?
Physics Toolbox Sensor Suite is rated higher. SensorLog averages 4.4 out of 5 from 40 ratings, while Physics Toolbox Sensor Suite averages 4.7 from 1.8K ratings.
Do SensorLog or Physics Toolbox Sensor Suite have ads?
Neither SensorLog nor Physics Toolbox Sensor Suite shows ads.
Which is updated more often, SensorLog or Physics Toolbox Sensor Suite?
SensorLog ships an update every 2 months, and Physics Toolbox Sensor Suite weekly. Most recently, SensorLog was updated on October 8, 2026 and Physics Toolbox Sensor Suite on October 10, 2026.

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