Comparison

Sensors Toolbox vs NDT Helper

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

Head to head
About

Sensors Toolbox

Access and visualize data from all your smartphone's sensors in real time. Collect information from accelerometers, gyroscopes, GPS, barometers, and more, then convert it into easy-to-read graphs. This app offers a clean, intuitive interface for comprehensive sensor analysis.

Highlights
  • Real-time sensor data collection
  • Accelerometer, gyroscope, GPS
  • Barometer, decibel meter, metal detector
  • Compass functionality
  • Intuitive graph visualization
  • User-friendly interface
Features
Read full description

Sensor toolbox makes the most of all the sensors in your smartphone. With a user-friendly interface and easy to read layout, Sensor Multitool - Toolbox allows you to collect data in real time for any and all sensors on your phone. Convert the data into easy to read graphs with a detailed readout from each sensor. This app contains everything you need: an accelerometer, gyroscope, GPS Data, barometer, decibel meter, metal detector, compass, and much more. This app follows all material design guidelines, meaning the app is clean and simple to use This app uses intuitive graphs to create clean, orderly graphs of all data collected.

About

NDT Helper

Features
Read full description

NDT Helper is the professional companion app for Non-Destructive Testing inspectors. Capture, organize, and report inspection defects with a streamlined mobile workflow designed for field use. SMART DEFECT CAPTURE Photograph defects with automatic watermarking that stamps each image with the defect ID, timestamp, category, and dimensions. No more manually labeling photos after the fact. Use the built-in zoom control for detailed close-ups of cracks, porosity, undercuts, and other indications. PROJECT MANAGEMENT Organize your work into projects, each containing its own defects, photos, and diagrams. Track defect status through the full review lifecycle: Pending, Progression, Static, Repaired, or Missed. Filter and browse defects in a visual grid with color-coded status badges. EQUIPMENT TRACKING Maintain a complete inventory of your NDT equipment with serial numbers, calibration dates, and maintenance status. Get clear visibility on which instruments are calibrated, due soon, or overdue. Supports all major NDT methods: UT, MT, PT, RT, VT, and ET. INTERACTIVE DIAGRAMS Upload technical drawings or weld maps and place color-coded defect markers directly on the diagram. Tap any marker to see full defect details. A built-in legend shows status at a glance — perfect for client presentations and final reports. RAW DATA RECORDS Log raw inspection data with client information, location details, and linked equipment. Attach photos and associate records with specific projects for complete traceability. TEAM COLLABORATION Share projects with teammates using simple 6-digit codes. Push and pull changes to keep everyone in sync. See collaborator count and pending changes at a glance. WORKS OFFLINE All data is stored locally on your device. Capture defects, manage equipment, and build reports without an internet connection. Sync to the cloud when connectivity is available.

Screenshots

Sensors Toolbox4 screens
NDT Helper4 screens

Verdict

The call

The clearest difference is ads: NDT Helper at none against Sensors Toolbox's shown. NDT Helper also leads on update cadence (weekly vs every 7 months). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sensors Toolbox ships an update every 7 months, NDT Helper weekly. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

Scorecard2 real differences · 8 level
Sensors Toolbox versus NDT Helper: the parameters behind the verdict, then further details
ParameterSensors ToolboxNDT Helper
PriceFreeFree
Rating4.2 (134 ratings) — better—
Positive reviews52.8% of reviews—
Number of ratings134 — better—
Update frequencyEvery 7 monthsWeekly — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size17 MB27 MB
Age rating4+4+
DeveloperAndrew NealEDISON BOTOR

In-app purchases

None

Sensors Toolbox

No in-app purchases

None

NDT Helper

No in-app purchases

Questions

Is Sensors Toolbox free?
Sensors Toolbox is free to download, with no in-app purchases.
Is NDT Helper free?
NDT Helper is free to download, with no in-app purchases.
Do Sensors Toolbox or NDT Helper have ads?
Sensors Toolbox shows ads; NDT Helper does not.
Which is updated more often, Sensors Toolbox or NDT Helper?
Sensors Toolbox ships an update every 7 months, and NDT Helper weekly. Most recently, Sensors Toolbox was updated on October 16, 2026 and NDT Helper on October 17, 2026.

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