Comparison

Sensor Data Pro vs Type D Viewer

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

Head to head
About

Sensor Data Pro

Features
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Sensor Data Pro records every sensor of your iPhone on one precise timeline, together with video, sound, Apple Watch and Bluetooth sensors. Review, analyze and export your sessions for research, engineering, sports and field work. RECORD - Accelerometer, gyroscope, magnetometer and device motion, each at its own rate up to 100 Hz - GPS and compass, barometer and altitude, steps and activity, sound level - Keeps recording with the screen locked: when nothing else keeps it running, GPS is recorded at low accuracy (you can turn this off); anything iOS pauses is marked as a gap instead of being filled in - Event markers with quick labels, countdown, auto-stop and presets - Live Activity and Dynamic Island with Mark, Pause and Stop; Siri, Shortcuts, the Action button, Control Center and a widget - Crash-safe: an interrupted recording is recovered the next time you open the app REVIEW - Synced multi-track timeline with zoom, map and per-axis statistics - Events and gaps on every track - Export to CSV and JSON, and import sessions shared from Sensor Data Pro The free version records up to 15 minutes per session. PRO+ - Unlimited recording length - Video synced to your sensor data, and audio files you can play back on the timeline - Apple Watch heart rate and wrist motion, with start, pause, mark and stop from the watch - Bluetooth heart-rate straps (with RR intervals), cycling speed, cadence and power, and running sensors - AirPods head motion and ARKit position tracking - Live streaming to your computer over UDP, TCP, WebSocket, HTTP, MQTT or ROS 2 - iCloud sync between your devices - Spectrum, spectrogram and filters for every sensor and for the recorded sound; compare sessions, trim and split - MCAP for Foxglove and ROS 2, GPX, KML and GeoJSON routes, and whole session packages to share - Threshold triggers and unlimited presets Pro+ is available monthly, quarterly or yearly. Yearly starts with a one-week free trial. If you installed Sensor Data Pro before version 2.0, Pro+ is included for free. PRIVATE BY DESIGN No account, no analytics, no ads. Recordings stay on your devices and leave them only when you export, stream or turn on iCloud sync. Subscriptions renew automatically until cancelled in your Apple Account settings at least 24 hours before the end of the period. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.iamsimon.dk/privacy.html

About

Type D Viewer

Features
Read full description

Type D Viewer is a fast and intuitive way to monitor live telemetry from supported devices on your local network. Designed with clarity and precision in mind, it delivers real-time performance data, extended system status, and secure identification fieldsβ€”all presented in a sleek, theme-aware interface. Adaptive layouts ensure the app looks great in both portrait and landscape orientations, while customizable themes let you tailor the visual experience to your style. Sensitive values can be safely masked by default and revealed with a tap when needed. Whether you’re evaluating performance, monitoring system health, or simply keeping an eye on important status indicators, Type D Viewer gives you a clear, responsive, and reliable window into your device’s live data. A Type D Expansion unit is required for operation.

Screenshots

Sensor Data Pro4 screens
Type D Viewer4 screens

Verdict

The call

The clearest difference is in-app purchases: Type D Viewer at none against Sensor Data Pro's 3. Type D Viewer also leads on iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Sensor Data Pro sells 3 in-app purchases, starting at $1.99 per month. Type D Viewer asks for nothing beyond the download.

Scorecard2 real differences Β· 4 level
Sensor Data Pro versus Type D Viewer: the parameters behind the verdict, then further details
ParameterSensor Data ProType D Viewer
PriceFreeFree
Update frequencyEvery 9 monthsβ€”
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, Apple Watch β€” betteriPhone
Requires iOS26.018.0 β€” better
Further details β€” not scored
Size20 MB2 MB
Age rating4+4+
DeveloperSimon Bogh Holding ApSPatrick Foley

In-app purchases

3 purchases

Sensor Data Pro

Subscriptions3
  • Pro+ Monthly$1.991 Month
  • Pro+ Quarterly$4.993 Months
  • Pro+ Yearly7 Days trial$14.991 Year
None

Type D Viewer

No in-app purchases

Questions

Is Sensor Data Pro free?
Sensor Data Pro is free to download, with in-app purchases available.
Is Type D Viewer free?
Type D Viewer is free to download, with no in-app purchases.
Do Sensor Data Pro or Type D Viewer have ads?
Neither Sensor Data Pro nor Type D Viewer shows ads.

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