One issue that comes up often is whether one should develop an “app” — a program built specifically for a mobile phone — or just make a mobile optimized website.

Here are the key advantages of developing an app:

• Immediacy – except for exceptionally-well developed websites, there is often a several second lag between doing an action on a mobile phone and seeing a result come back over the mobile network. Apps are immediate: when one does something, you see the results instantly. Immediacy leads to a different type of interaction between the user and the device, more playful, more experimental and fundamentally deeper.
• Offline Use – apps don’t depend on a network connection, which means they work in airplanes, in below-ground floors of buildings, in tunnels and (especially) they work on iPod Touches which comprise nearly half the iPhone device market.
• Gizmos – your app can access your device’s camera, compass, GPS, touch screen, motion sensor, and so forth. Mobile sites, not so much.
• Privileged space – people who own devices that can run apps, run apps. The first place they’re going to look for information is their apps which are given a “privileged” place on the screen of the user’s mobile phones. Your mobile app is just another website, that they may or may not get to when they use their browser.

We’ll also briefly mention here that most “mobile optimized” websites rarely are: they don’t work with the user’s location, they don’t design for limited bandwidth and high latency network connections, they’re not tested against a range of devices, and they rarely provide the right amount of information in the right way. In short, the user experience is awful.

Related reading:

• Five Reasons Mobile Apps Rule
• Mobile apps: Cemented into your business’s tech strategy?
• Mobile apps: Does your business need one?