Here’s an iphone quickie for the weekend - Mint.com, the personal finance site (that’s awesome) has launched an iPhone app today. Technically, it went up yesterday, but for some reason, you couldn’t find it in the app store until today. Anyhow, it’s on the store, and is very handy for checking your account balances and investments on the fly. I had some issues with the data being 2-3 hours old, even when I told it to refresh the data (and could see the latest data right there on the Web site), but as a whole, it’s a very nice tool to keep handy. Just remember - it’s a good bet to password protect your iPhone if you’re going to have any personal finance info on it.