smartphone app
Common modern term for a mobile application on a smartphone.
I downloaded a new smartphone app.
This smartphone app is free to use.
I downloaded a new smartphone app.
このスマホアプリをインストールすると便利です。
Installing this smartphone app is convenient.
As soon as I wake up, I open a smartphone app to check the weather.
They are developing a new smartphone app.
Variant with interpunct; less common but sometimes used for clarity.
Wasei-eigo abbreviation from 'smartphone' (スマートフォン → スマホ) + 'app' (アプリケーション → アプリ).