In case you missed it, Fitbit launched their long awaited tracker app for Windows Phone 8.1 today. The app is already earning a 4.5 (out of 5) rating on the Store, with many customers pleased with the release.

In case you are new to Fitbit, and you need a new Windows Phone, the Microsoft Store is running a stellar deal. Starting at $149, you can grab both the Lumia 635 (AT&T black or T-Mobile white) and a brand new Fitbit Flex (black or slate). Those are no-contract prices too, although the T-Mobile package is priced slightly higher at $178.95.

The Lumia 635 is a solid entry-level Windows Phone that features 8.1, Cortana and the Lumia Cyan update. The 4.5-inch IPS ClearBlack display is certainly good enough, and the 1.2GHz Quad Core Snapdragon keeps things humming along nicely.

Does anyone else think this is a good offer? You do save about $50, which sounds like a good deal to us.

Source: Microsoft Store; Thanks, Enzo M., for the tip!