I've been working on this for a while, and I still have data quality issues that need corrected, but I figure I'll "release" this now so I can get some feedback. I think it's plenty useful in its current state.

It's part-picker-like tool aimed at hopefully greatly aiding the process of picking parts for FPV drone builds. Once you have props, motors, and a battery selected, it estimates the hover time and thrust-to-weight ratio of the build. When you go to switch-out parts, it shows you the estimated deltas for thrust-to-weight-ratio and hover flight times. You can do things like sort by the highest deltas, if you want to optimize for flight time, for instance. The application does a lot of compatibility checks and auto-filtering, but they still need a little more work (mostly because of data quality issues). I currently only support GetFPV's catalog, but once I'm satisfied with the data quality, I will add more stores and price comparisons.

I'd be happy get feedback, or answer any questions.