Comparison

SensorLog vs Mentra

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

Mentra

Discover and run a variety of applications designed for smart glasses. This platform provides access to mini apps for AI assistance, live captions, streaming, language learning, and more, enhancing your smart glasses experience.

Highlights
  • Access to global developer apps
  • Live captions for accessibility
  • Hands-free photo capture
  • AI-powered assistance
  • Livestream your point-of-view
  • Language learning tools
  • On-demand teleprompter
Features
Read full description

Mentra gives you access to apps built by developers from around the world. Mentra is the leading smart glasses operating system and SDK - and brings it all together in one app. Stream your view, see live captions, talk to AI, capture photos hands-free, and unlock new experiences on your smart glasses. Compatible with Even Realities G1, Mentra Live, and Vuzix Z100. Get Mentra mini apps including: * Merge - Proactive AI * Live Captions - real life subtitles for the deaf and hard-of-hearing * Notes - Proactive note taker * Streamer - Livestream your POV to Twitch, YouTube, and more * LinkLingo - Language learning * MemCards - Flash cards on your HUD * Teleprompter - see what you want to say * Live Translation - understand anyone * Calendar Reminders - get a ping before your next meeting * Dash - Running/cycling stats without looking down New mini apps are added regularly, expanding what your glasses can do. With Mentra, you choose your reality with your smart glasses experience.

Screenshots

SensorLog4 screens
Mentra4 screens

Verdict

The call

The clearest difference is price: Mentra at Free against SensorLog's $2.99. Mentra also leads on in-app purchases (none vs 4) and update cadence (every 2 weeks vs every 2 months). SensorLog's advantage is rating (4.4 vs 3.7) and review sentiment (69% vs 53%). On ratings volume, ads 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

Mentra is free to download; SensorLog costs $2.99 up front. SensorLog sells 4 one-off in-app purchases. Mentra asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SensorLog holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 40 and 35 respectively. Written reviews point the same way: 69% of SensorLog's written reviews are positive against 53% of Mentra's.

UpkeepUpdate frequency

SensorLog ships an update every 2 months, Mentra every 2 weeks. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

Scorecard7 real differences · 3 level
SensorLog versus Mentra: the parameters behind the verdict, then further details
ParameterSensorLogMentra
Price$2.99Free — better
Rating4.4 (40 ratings) — better3.7 (35 ratings)
Positive reviews69.0% of reviews — better52.6% of reviews
Number of ratings40 — better35
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS18.015.5 — better
Further details — not scored
Size4 MB267 MB
Age rating4+12+
DeveloperBernd ThomasMentra

Customer experience

SensorLog

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

Mentra

All ratings35 ratings
Positive62.9%
Neutral2.9%
Negative34.3%
Written reviews19 reviews
Positive52.6%
Neutral5.3%
Negative42.1%

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
None

Mentra

No in-app purchases

Questions

Is SensorLog free?
SensorLog costs $2.99, and also offers in-app purchases.
Is Mentra free?
Mentra is free to download, with no in-app purchases.
Which has better reviews, SensorLog or Mentra?
SensorLog is rated higher. SensorLog averages 4.4 out of 5 from 40 ratings, while Mentra averages 3.7 from 35 ratings.
Do SensorLog or Mentra have ads?
Neither SensorLog nor Mentra shows ads.
Which is updated more often, SensorLog or Mentra?
SensorLog ships an update every 2 months, and Mentra every 2 weeks. Most recently, SensorLog was updated on October 18, 2026 and Mentra on October 14, 2026.

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