Windows Phone Thoughts: Have Application Purchase Regret?

Many of us here do not run perfectly vanilla devices. We like to install one or two (on the low side) or even 10 or more third-party applications. However even though trial versions exist, sometimes it can be very tempting to buy something only to find a few weeks later that it wasn't the best purchase. I personally have dozens of registration codes in my eWallet for programs I though were uber-cool, and later found weren't as uber-useful as I had hoped. Want an example? OK - here's one: Calligrapher

Now don't get me wrong. Calligrapher is a great product. It works well, it's widely used, and has many featureas that power users can leverage quite well. However when I found the product, I forgot one critical thing about myself: my handwriting is aweful. Really bad. So bad that I worked hard to make my own font so I can type notes out in actual legible handwriting. And that means I don't really like to write. Not liking to write = not wanting to use Calligrapher that often. It's a shame too, but I suppose something to learn from.

Now it's your turn to share. Do you have Application Buyers Remorse or Regret? Feel free to name the application and why it wasn't a great fit for you!