About this app
Determine any angle between two surfaces with your iPhone, iPod Touch and iPad by using the angle measuring tool PROtractor.
Latest release
What’s New
Version 1.0
Jan 22, 2016
This update from Apple will improve the functionality of this app. No new features are included.
Audience growth
Ratings growth
7-day gain
+0
Ratings / day
0.0
30-day gain
+0
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
Current
$0.99
Historical low
USD 0.99
Paid → free
0×
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 12, 2026 · 12:07 AM $0.99
Screenshots
