Measure angles precisely using your phone's screen, gyroscope, or camera. Offers smart presets, real-time feedback with high accuracy, and calibration features to adapt to various situations.
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July 17, 2026
Your time, undisturbed. * Removed ads; * New UI design; * Updated developer information.
MoreAd-free | auto-renews, cancel anytime
$4.99
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Yes, Protractor contains advertisements. The VIP subscription offers an ad-free experience.
The VIP subscription provides an ad-free experience and is available for $4.99 per month with a 3-day free trial. Payment is charged to your Apple ID and auto-renews unless canceled at least 24 hours prior.
Protractor offers hyper-responsive feedback with an accuracy of less than or equal to 0.5°. Its anti-shake technology can boost accuracy by 80% in motion scenes when using gyroscope mode.
Protractor is supported on iPhone, iPad, and iPod devices.
The app was last updated on October 6, 2025, indicating regular updates are provided by the developer.
Protractor features three modes: Screen Protractor, Gyroscope Protractor, and Camera Protractor, allowing users to adapt to different measurement scenarios.
Yes, you can cancel your subscription by turning off auto-renewal at least 24 hours before the current period ends in your Apple ID account settings. You will retain access until the end of your paid billing period.
Protractor has an age rating of 4+, making it suitable for a wide range of users.
