Comparison

Sensor Logger vs GPS Speedometer

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

Head to head
About

Sensor Logger

This app collects and displays data from various device sensors, including motion, GPS, and audio. It offers background recording, interactive plots, and multiple export formats. Advanced features allow for data streaming, systematic data collection from other users, and creating shareable data-driven dashboards.

Highlights
  • One-tap logging
  • Background recording
  • Interactive plot visualization
  • Data streaming (HTTP/MQTT)
  • CSV, JSON, Excel, KML exports
  • Create and share data dashboards
  • Systematic data collection studies
Features
Read full description

Sensor Logger collects, records and displays data from a range of sensors on iPhone, Apple Watch, iPad and AirPods — including accelerometer, gyroscope, GPS, audio, camera and Bluetooth devices. You can log device properties such as screen brightness, battery and network state. Select and preview desired sensors in a few taps. A single tap initiates the recording function, which works even when the app is in the background. View and manage recordings within the app via interactive plots. The app supports many export formats, including Zipped CSV, JSON, Excel, KML and more. For advanced use cases, stream data via HTTP or MQTT, resample measurements from multiple sensors, create Studies to collect data from other users systematically and write custom automation rules based on sensor, time and location. Once you have collected your data, you can create Stories — data-driven dashboard with your recordings, hosted online for effortless sharing. Sensor Logger is designed for researchers, educators, and anyone interested in collecting or monitoring sensors on their smartphone. It serves as the ultimate toolbox for exploring various fields, including physics, science, technology, engineering, and mathematics (STEM). - One-tap logging - Background recording - Recordings on interactive plots - Stream data via HTTP & MQTT - Intelligent, custom rule engine - Zipped CSV, JSON, Excel, KML & SQLite exports - Resample and aggregate measurements - Enable & disable specific sensors - Scan and log nearby Bluetooth devices - Add timestamp-synchronised annotations during recording - Adjust sampling frequency for sensor groups - Custom recording workflow - Raw and calibrated measurements available - Live plots and readings for sensors - Organise, sort and filter recordings - Control & track recording session from Watch - Bulk export & delete recordings - Resources to help you analyse your data - Data stays on-device and private - Create and share dashboard-style, data-driven Stories using your recordings, hosted online. Studies & Sensor Logger Cloud Create Studies to collect data from other Sensor Logger users efficiently. When activated, Studies use the investigator's specified sensor configuration for consistent data collection. Participants can upload their recordings to a secure cloud and join, pause, or switch Studies anytime. Studies include clear data usage descriptions, privacy statements, and contact details to ensure privacy compliance. Customize Study size, duration, sensor configuration, and export formats. Optional Paid Features (Plus, Pro & Ultimate) - No limitations on the number of stored recordings - Additional export formats - Combined CSV export - Customise recording workflow - Advanced sensor configurations - Custom naming templates - Theme and icon customizations - Unlimited Bluetooth beacons and no limit on the minimum RSSI - Create larger Studies with more participants - More allocated storage on Sensor Logger Cloud - Email support - Advanced study customization Supported Measurements - Device Acceleration (Accelerometer; Raw & Calibrated) - Gravity Vector (Accelerometer) - Device Rotation Rate (Gyro) - Device Orientation (Gyro Raw & Calibrated) - Magnetic Field (Magnetometer Raw & Calibrated) - Compass - Barometric Altitude (Barometer) - GPS Coordinate, Altitude, Speed & Heading - Audio (Microphone) - Loudness (Microphone) - Images (Front/Back) - Video (Front/Back) - Depth - Pedometer - Activity - Heart Rate (Watch) - Wrist Motion (Watch) - Location & Barometer (Watch) - Annotations (Timestamp and text) - Device battery level and state - Device screen brightness level - Nearby Bluetooth beacons (advertised data) - Headphone Motion (AirPods) - Network Heart rate logging requires integration with the Health app on the watch. Permission to access the heart rate from HealthKit on the watch is needed for the app to log the measurements. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

GPS Speedometer

Monitor your speed and track routes with this GPS-powered tool. It offers real-time data, detailed trip history, and customizable speed limit alerts. Features include a HUD mode and Apple Watch integration for convenient use.

Highlights
  • Real-time speed and trip data
  • Detailed trip history with graphs
  • Customizable speed limit alerts
  • Head-Up Display (HUD) mode
  • Apple Watch support
  • PDF trip reports
Features
Read full description

Accurate GPS Speedometer for Any Type of Movement (with Apple Watch Support) A reliable companion for drivers, motorcyclists, cyclists, and anyone who wants to monitor their speed and route. The app displays your trip data in real time using precise GPS navigation. GPS Speedometer: - View your current speed and other key parameters in real time; - Supports multiple measurement units: km/h, mph, knots. Map: - Track your location, route, and direction on the built-in map. Detailed Trip History: - Start and end time of each trip; - Total distance traveled; - Full route displayed on the map; - Maximum and average speed; - Total trip duration and active driving time; - Stop duration; - Maximum and minimum elevation; - Elevation and speed graphs over time; - Generate a comprehensive PDF report. Speed Limit Alerts: - Set your custom speed limits and get notified when exceeding them. HUD Mode (Head-Up Display) - Project essential data onto your windshield at night for safer driving. Apple Watch Support: - Track your speed and route directly from your wrist; - Intuitive interface for quick access to key features. Good to Know: - Make sure your device is securely mounted to prevent damage while driving or braking; - Continuous use of GPS may reduce battery life. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current subscription period. Your iTunes will automatically be charged at the same price for renewal, as stated above, within 24 hours prior to the end of the current subscription period. You can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. Privacy Policy: https://sites.google.com/view/dfkbndjkbnrjt/privacy-policy Terms of use: https://sites.google.com/view/sdvskdmvl/terms-of-use

Screenshots

Sensor Logger4 screens
GPS Speedometer4 screens

Verdict

The call

Sensor Logger and GPS Speedometer both sit at 4.8 stars, but that hides the real split: 100% of GPS Speedometer's written reviews are positive against 44% of Sensor Logger's. Sensor Logger's advantage is ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price, rating, in-app purchases and monetization model 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

Both are free to download. Sensor Logger sells 6 in-app purchases, starting at $4.99 per month and GPS Speedometer sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Sensor Logger against 4.7 for GPS Speedometer. Both are backed by a comparable volume of ratings — 111 and 23 respectively. Written reviews are what separate them: 44% of Sensor Logger's written reviews are positive against 100% of GPS Speedometer's.

UpkeepUpdate frequency

Sensor Logger ships an update weekly, GPS Speedometer every 3 weeks. Both last shipped on October 1, 2026.

Scorecard4 real differences · 6 level
Sensor Logger versus GPS Speedometer: the parameters behind the verdict, then further details
ParameterSensor LoggerGPS Speedometer
PriceFreeFree
Rating4.8 (111 ratings) — better4.7 (23 ratings)
Positive reviews44.4% of reviews100.0% of reviews — better
Number of ratings111 — better23
Update frequencyWeekly — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple WatchiPhone, iPod, Apple Watch
Requires iOS16.415.6 — better
Further details — not scored
Size81 MB54 MB
Age rating4+4+
DeveloperLogger Labs LTDAndrei Dziahel

Customer experience

Sensor Logger

All ratings111 ratings
Positive95.5%
Neutral2.7%
Negative1.8%
Written reviews9 reviews
Positive44.4%
Neutral22.2%
Negative33.3%

GPS Speedometer

All ratings23 ratings
Positive91.3%
Neutral8.7%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

6 purchases

Sensor Logger

Subscriptions6
  • Plus Monthly$4.991 Month
  • Pro Monthly$9.991 Month
  • Ultimate Monthly$24.991 Month
Show 3 more
  • Plus Yearly$49.991 Year
  • Pro Yearly$99.991 Year
  • Ultimate Yearly$249.991 Year
4 purchases

GPS Speedometer

Subscriptions3
  • Speedometer GPS: Speed Tracker3 Days trial$4.997 Days
  • Speedometer: GPS Navigation3 Days trial$12.991 Month
  • Speedometer Simple3 Days trial$34.991 Year
One-time1
  • GPS Speedometer MPH Tracker$49.99

Questions

Is Sensor Logger free?
Sensor Logger is free to download, with in-app purchases available.
Is GPS Speedometer free?
GPS Speedometer is free to download, with in-app purchases available.
Which has better reviews, Sensor Logger or GPS Speedometer?
Sensor Logger is rated higher. Sensor Logger averages 4.8 out of 5 from 111 ratings, while GPS Speedometer averages 4.7 from 23 ratings.
Do Sensor Logger or GPS Speedometer have ads?
GPS Speedometer shows ads; Sensor Logger does not.
Which is updated more often, Sensor Logger or GPS Speedometer?
Sensor Logger ships an update weekly, and GPS Speedometer every 3 weeks. Most recently, Sensor Logger was updated on October 1, 2026 and GPS Speedometer on October 1, 2026.

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