Draw2Measure Protractor vs CViConnect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
CViConnect
This iPad application supports parents and teachers of children with Cortical Visual Impairment (CVI). It guides users through tailored exercises to improve visual focus and brain stimulation, with data analysis to personalize future lessons.
- Tailored visual exercises
- Brain stimulation for CVI
- Front-facing camera analysis
- Performance graphing and analysis
- Automatic lesson generation
- Support forum
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Who is the app for? CVi Connect is an iPad application intended to support parents, and teachers of the visually impaired (TVIs), who work with children who have Cortical Visual Impairment (CVI). The app can be used by parents, TVIs and anyone else who works with children who have CVI. CVi Connect's goal is to aid in the process of improving the visual impairment with this iPad application, and grow the awareness of CVI as a whole and provide educational content related to CVI. What does it do? The application guides the user through exercises of varying difficulty that are intended to help the child's eye focus on graphics on the screen, which stimulates the area of the brain that is most affected by CVI. By stimulating this area of the brain we can support the improvement of the child's vision. Over time the exercises are tailored to each child based on the data that is collected while the child and parent use the application. How does it work? Using the front-facing camera in the iPad the application can measure facts about how the child is responding to the exercises. All of these expertly-determined facts can then be graphed and analyzed by the educator, in whole or in part, across all training sessions. For example, it is possible to graph the time spent, on average, on training sessions combined with the number of times a sprite is touched, showing ways of measuring improvement in visual acuity as well as allowing a teacher to tailor future lesson plans to better match the needs of the student. In addition to analyzing favorite and least favorite lessons, the CVI system has the ability to use information from the training sessions to automatically generate new training sessions that are best for the student. As an example, the system can detect highly touched areas of the iPad and where sprites are commonly touched. Using this information, the system can automatically generate new lesson plans that focus the attention specifically on these areas as well as specifically AWAY from these areas to improve acuity. The system can use facts about the lengths of time spent on average by the user on training sessions to tailor the length of time a typical training session should take place. Where can I get help if I need it? CVi Connect maintains a support forum where users of the app (parents, TVI's and CVI professionals) are supported by leading CVI professionals and CVi Connect technical staff. Users can asks questions and provide feedback in this forum, which adds to the CVi community as a whole by serving as a place where CVI discussions can take place.
Screenshots
Verdict
The clearest difference is rating: CViConnect at 4.3 against Draw2Measure Protractor's 3.0. CViConnect also leads on update cadence (every 5 weeks vs every 20 months). Draw2Measure Protractor's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 12.0). On price, review sentiment, ratings volume and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CViConnect holds the better App Store score, 4.3 against 3.0. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews split almost evenly too, at 50% and 50% positive.
Draw2Measure Protractor ships an update every 20 months, CViConnect every 5 weeks. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.
| Parameter | Draw2Measure Protractor | CViConnect |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (4 ratings) | 4.3 (4 ratings) — better |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| Number of ratings | 4 | 4 |
| Update frequency | Every 20 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 8.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 1 MB | 201 MB |
| Age rating | 4+ | 17+ |
| Developer | American Printing House for the Blind (APH) | LifeScience Technologies, LLC |
Customer experience
Draw2Measure Protractor
CViConnect
In-app purchases
Draw2Measure Protractor
No in-app purchases
CViConnect
No in-app purchases
Questions
Is Draw2Measure Protractor free?
Is CViConnect free?
Which has better reviews, Draw2Measure Protractor or CViConnect?
Do Draw2Measure Protractor or CViConnect have ads?
Which is updated more often, Draw2Measure Protractor or CViConnect?
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