Prime Kit
Protractor, compass & GPS
Free · Designed for iPad. Not verified for macOS.
Hang the shelf. Check the angle. Find north. Know exactly where you stand. Prime Kit is the little toolbox that's always in your pocket — precise and free.
Prime Kit turns your phone into a precision toolbox — instruments with the feel of real workshop hardware, and more on the way.
LEVEL — A machined bullseye level plus edge and plumb vials. Calibrate against any surface, get live angles and slope, and hear a soft chime the moment you hit level. On iPad, landscape mode shows all three vials at once, workbench style.
ANGLE — A rotating protractor. Align your phone's edge with one line, tap Start, rotate to the second line — the swept angle reads out live, clockwise or counterclockwise, powered by the gyroscope for magnet-proof accuracy.
COMPASS — A weighted dial with true-north headings, live accuracy grading, and built-in calibration guidance when the magnetic environment misbehaves.
RULER — Measure small objects directly against your screen with draggable markers, in centimeters or inches, from either edge and in either direction.
LOCATE — Your position at a glance: GPS coordinates, altitude, speed, and signal quality, plus your country and nearest city. Great for hikes, road trips, or just knowing exactly where you stand.
No account. No sign-up. Sensor data never leaves your device — location is shown to you and never stored or shared. A single small ad banner keeps it free.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Nguyen Nam, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nguyen Nam
- Size
- 57.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Nam Nguyen