Blackboard vs Calibration Meter

A blackboard-style app that you can write on with a white and red pen Can be used as a notepad or for drawing Multi-touch compatible, so multiple people can draw at the same time You can also save images, so give it a try

Measure color temperature and white balance with your phone, and calibrate your computer's display with the ScreenCal app — all locally, no extra hardware. Calibration Meter measures ambient light color temperature and white balance on your phone, and also serves as the measurement companion for ScreenCal on your computer. Measure color temperature · Point your phone at a light source to read color temperature (K) and RGB balance in real time — no computer needed · Save and review your measurement history Calibrate your display 1. Open ScreenCal on your computer and Calibration Meter on your phone. 2. Hold your phone close to the screen — measurement starts automatically. 3. ScreenCal generates and applies an ICC color profile. Restore your original settings anytime. · Everything runs locally — camera frames never leave your phone; results travel over your local Wi-Fi · This app is an independent product and is not affiliated with Apple