25 Principles to mobile app design from I/O 2016

I/O video

25 Principles PDF

GV Guide to Research

App navigation and exploration

1. Make it easy to manually change the location
2. Where app to web transitions are needed, make them frictionless — chrome custom tabs

In app search

1. Prominently display the search field
2. Provide filter and sort options
3. Add custom suggestions
4. Add recent query suggestions

Commerce and conversions

1. Enable comparison shopping features
2. Make it easy to add and manage payment methods

Registration

1. Differentiate “sign in” from “sign up” (sign in and register)
2. Make password authentication a frictionless experience — smart lock & fingerprint & sign in hints

Form entry

1. Build user-friendly forms
2. Match the keyboard with the required text inputs

Usability and comprehension

1. Provide text labels and visual keys to clarify visual information
2. Add descriptive text to user interface controls in your application
3. Ask for permission in context