Calculator83 vs PMag

Calculator83 is a minimalist calculator designed with simplicity to the core and an emphasis on a clean workflow. Be up and running in seconds! Featuring two modes of operation, basic and scientific. The goal of this app is to allow users to have a powerful calculator without the fuss of learning all the settings of a powerful calculator.

PMag is the missing app that all visually-impaired user would like to have on their devices. It simulates all of the specific (and specialized) features of a real and expensive optic magnifiers for low-vision people. There are case where the low-vision is to severe that a user could have necessity to magnify some objects with VoiceOver still running. PMag is totally accessible with VoiceOver! PMag's features are as follows: * Normal mode; * Black and White mode; * 14 false-color high-contrast schemes; * Max zoom factor as allowed by device in use; * Real time brightness, contrast and sharpness control; * Real time exposure and focus tuning; * Torch (if available); Gestures to manipulate parameters are quite simple: * Swipe left/right with one finger to change parameter type (brightness, contrast and sharpness); * Swipe up/down with one finger to increase/decrease current parameter value; * Rotate two fingers to go through the 14 false-color schemes; * Pinch in/out with two fingers to zoom out/in; * Tap with one finger to focus at the screen center; * When VoiceOver is active tapping once with two fingers you can listen the current magnifier state;