CALC ← Knowledge Base CALC Shortcuts, Gestures and Tricks How to Customize CALC's colors, look and feel? How to Install CALC's Custom Keyboard? FAQ: How to Add CALC's Widget to the Notification Center? FAQ: How to Install the Watch App How to add other conversion categories (Currency, Mass etc.) to the Apple Watch App Issue: Custom Theme disabled image still shows Cleanup if you have multiple CALC versions... CALC Watch App - WatchOS 2.0 migration FAQ: How to convert a decimal to a fraction? The features of CALC Smart, Swift & Prime FAQ: How to add other currencies to the converter How to graph a function? CALC's MDM Configuration and Volume Purchases (VPP) FAQ: Copy / Paste and Clipboard FAQ: How to M+ M- MR & MC? How to access the Tip Calculator / Estimator? How to disable the widget's Clipboard feature FAQ: How do I do 1/x? FAQ: How to Tape Roll? Wrong Conversions? FAQ: Smart Parenthesis & the Order of Operations FAQ: Watch App - Square root using x^(1/y) CALC Settings FAQ: How to set a Timer? Financial Custom Functions How to Define new Custom Advanced Functions? Custom Constants Custom functions for Time (hours/minutes) FAQ: How to set the wallpaper / background image?