Toolbox - Tools for measuring is a comprehensive multitool app designed for iPhone and iPad users. Developed by Jens Rieckhof, this free app is a must-have for anyone in need of precise and essential measurement tools.

With 9 super-accurate professional measurement tools, Toolbox offers a wide range of functionalities for your projects. From measuring angles and distances to frequencies and areas, this app has it all.

One of the standout features of Toolbox is the Inclinometer + Level tool. It allows you to measure angles with a precision of 0.1° and store multiple angle values. You can even overlay the camera image as a background for enhanced accuracy. The app also provides audio signals for angle differences and offers an AirPrint and email function for saving and sharing angles.

Another useful tool in Toolbox is the Plumb Bob / Leveling Tool. It helps you align horizontal surfaces along both axes and displays the deviation from horizontal in degrees. All the necessary functions are conveniently placed on one screen for easy access.

In addition to these tools, Toolbox offers an Endless Ruler for accurate length measurements, a Compass that utilizes your phone's compass for angle measurements, and a Barometer/GPS Altimeter for tracking pressure, altitude, and elevation changes. The app even features an Audiometer for measuring frequency responses and volumes across the audible spectrum.

If you need to measure objects in a room, Toolbox has you covered with its 3D Camera Measurement tool. Simply use your device's camera to measure individual objects with ease.

Overall, Toolbox - Tools for measuring is a versatile and reliable app that provides a wide range of measurement tools in one convenient package. Whether you're a professional or a DIY enthusiast, this app is sure to meet your measurement needs.