the best number to start with, doesn't need an app.
the yellow sticker weight number(or white sticker on older RV's.)
all you have to do to the yellow sticker weight number is add the weights of battery, propane, water and cargo.
battery, propane and water are pretty easy to figure out. it's the cargo that will be the challenge.
but even without the cargo added, you'll have a very good ballpark number to work with.
my Roo 23SS's sticker weight was 4471lbs.
add 90lbs. for two group 24 deep cycle batteries, 40lbs. for propane in both tanks and 250lbs. for 30 gallons of water.
so, before any cargo/food/supplies, it now weighs around 4850lbs., ready to be loaded.
its GVWR is 6367lbs. which gives me over 1500lbs. for cargo, which i could never even come close to.
don't need an app for that.
i have plenty of skoosh that i really shouldn't need to go to scale unless i wanted to.
but by starting with the actual sticker weight, i can at least get a real world number to work with, without even owning the trailer yet.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC