Anytime I am flying with people int he backseat, I whip out this app and check the W&B to decide on fuel before calling the truck. It is highly customizable — I had to create a template for at 172P “SuperHawk” with the STC 180hp engine. Just follow the directions and use your POH and current W&B info and it’s done. I’ve used the app for several years, but last night had to email customer service as a button appeared to be missing so I could add more stations. I’m not kidding — I got an email back within 5 min on how to fix my issue at 9:30pm PT. Cannot recommend highly enough.
seebunny about Aviation W&B Calculator, v1.9