Indispensable apps are the ones that most Android users will almost certainly need to install for the smooth functioning of their smartphones. Note that this list is US-centric and some of the apps listed here may not be relevant/ available elsewhere.
You will also find links to separate best lists for apps where you can also look for alternatives to the best Android apps already listed here. Note that we have separated these must-have Android apps into several categories and selected one app - which we think is the best - for each app category.