An app is software installed on a device. A website runs in a browser.

| | App | Website |

|---|---|---|

| Installed? | Yes | No |

| Offline? | Often yes | Usually no |

| Uses camera/GPS? | Easy | Limited |

| Updates | App store | Instant (refresh) |

| Cost to build | Higher | Lower |

Many services now offer both — a website for occasional visitors, an app for regulars.