Build an Android display PPI calculator app with David Briddock
Over the last few issues we’ve used App Inventor 2 (AI2) to build a useful timer, a motion-activated dice shaker and a fully functional web browser.
This time we’re going to build a display pixel density calculator based on a pixels-per-inch (PPI) formula.
Remember, all you’ll need to play along is a Windows/Mac/Linux PC, a web browser and a Google account. Ideally, you’ll also have an Android smartphone or tablet, but even this isn’t essential.
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