Comparison

Draw2Measure Protractor vs TD CoPilot

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

Head to head
About

Draw2Measure Protractor

This app offers two methods for measuring angles: tracing them on screen or using the device's gyroscope. It provides an accessible alternative to traditional protractors for all students, including those with visual impairments.

Highlights
  • Measure angles by tracing on screen
  • Measure angles using device gyroscope
  • Accessible for visually impaired students
  • Reports measurements in degrees and radians
  • Includes instructions and demo video
Read full description

The Draw2Measure Protractor app allows students to measure angles in two ways. First, students can place an angle over the screen of a device, such as a phone or tablet, and trace along the sides of the angle with a fingertip or stylus. The app records the locations of the sides and then calculates the angle. For objects that may not fit on a screen, students can find measurements by rotating the device itself, which utilizes a built-in gyroscope sensor to measure the angle. Unlike traditional protractors, the Draw2Measure Protractor is accessible for blind and low vision students. It gives all students, both sighted and visually impaired, an alternative way to measure angles, thus meeting students’ diverse needs in math and science classrooms. Watch the short video below to see the app in action. Features: • Enhanced accessibility; designed for sighted students as well as students with low vision or blindness • Allows students to measure angles by tracing the sides rather than reading measurements as with a traditional protractor • Reports angle measurements in both degrees and radians • Includes detailed instructions and a link to a demonstration video

About

TD CoPilot

This app calibrates eye tracking devices for optimal performance and user experience. It also provides access to device settings, firmware updates, and battery status information.

Highlights
  • Eye tracker calibration
  • Device settings customization
  • Firmware update tracking
  • Application version display
  • Battery status verification
Read full description

TD CoPilot is the iOS-based eye tracking calibration app for your Tobii Dynavox device. Like all eye tracking systems, this device requires calibration. That's where the TD CoPilot app comes in. Quick and easy calibrations ensure your device is accurate, works correctly and delivers the best experience. The TD CoPilot app also provides access to general information such as settings, firmware updates, version numbers, and battery status. TD CoPilot functions: • Keeps your device in peak operating form by calibrating the eye tracker to your eyes • Customizes device settings to meet your specific needs • Tracks hardware updates and lets you explore the latest features and user experiences of your device • Tells you the application version • Verifies the status of your device battery life

Screenshots

Draw2Measure Protractor2 screens

Verdict

The call

The clearest difference is rating: TD CoPilot at 3.7 against Draw2Measure Protractor's 3.0. TD CoPilot also leads on update cadence (every 2 months vs every 20 months). Draw2Measure Protractor's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 15.0). On price, ratings volume, ads and in-app purchases 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.

ReceptionRating · Positive reviews · Number of ratings

TD CoPilot holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively.

UpkeepUpdate frequency

Draw2Measure Protractor ships an update every 20 months, TD CoPilot every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Draw2Measure Protractor versus TD CoPilot: the parameters behind the verdict, then further details
ParameterDraw2Measure ProtractorTD CoPilot
PriceFreeFree
Rating3.0 (4 ratings)3.7 (3 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings4 — better3
Update frequencyEvery 20 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS8.0 — better15.0
Further details — not scored
Size1 MB57 MB
Age rating4+4+
DeveloperAmerican Printing House for the Blind (APH)Tobii Dynavox LLC

Customer experience

Draw2Measure Protractor

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

TD CoPilot

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Draw2Measure Protractor

No in-app purchases

None

TD CoPilot

No in-app purchases

Questions

Is Draw2Measure Protractor free?
Draw2Measure Protractor is free to download, with no in-app purchases.
Is TD CoPilot free?
TD CoPilot is free to download, with no in-app purchases.
Which has better reviews, Draw2Measure Protractor or TD CoPilot?
TD CoPilot is rated higher. Draw2Measure Protractor averages 3.0 out of 5 from 4 ratings, while TD CoPilot averages 3.7 from 3 ratings.
Do Draw2Measure Protractor or TD CoPilot have ads?
Neither Draw2Measure Protractor nor TD CoPilot shows ads.
Which is updated more often, Draw2Measure Protractor or TD CoPilot?
Draw2Measure Protractor ships an update every 20 months, and TD CoPilot every 2 months. Most recently, Draw2Measure Protractor was updated on November 2, 2026 and TD CoPilot on November 3, 2026.

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