Up until now, if you wanted to use the location-based service Gowalla on the go, you had to have an iPhone. Today, that expands to Android. But rather than building an app, Gowalla has extended support to Android using the mobile web. This works because Android’s browser is closely tied to the device and is able to access location information, which is vital for Gowalla. The goal is to extend this mobile web support to BlackBerry and a few other location-aware devices in the next week or so, co-founder Josh Williams tells us.

As a small team, Gowalla, like its rival Foursquare, doesn’t have a lot of resources to devote to building apps on all the mobile platforms, so this is a good solution for the time being. Eventually, the plan is to have native apps for all the big platforms, Williams says.

But the most-loved child will remain the iPhone app for the foreseeable future. In fact, version 1.3 of that app has just been submitted to the App Store for approval, we’re told. Williams says that it should alleviate a lot of the check-in and place adding issues that u