I personally use the "TurboScan" app to scan the contract right there and email it to them.  

If you didn't incur any actual expenses for that family, returning their app fee seems reasonable for you to do, but is not required. you could always make a copy of the application form and return them the original with their returned app fee to make them happy.

But in such apps, we can look at a house in details one by one.

An app that allows for good organization. 

Examples of residential real estate include undeveloped land, houses, condominiums and townhomes; examples of commercial real estate are office buildings, warehouses and retail store buildings; and examples of industrial real estate are factories, mines and farms."

Like any good Dutchman I waited until the big box stores had their after thanksgiving sales to buy some much needed power tools for my investment property.

And have some awesome things in store for the world.

On rental app. fees, we charge $25 per adult, but higher might be more in tune with your area.  

I'm  surprised you can get this from a big box store like Staples.

I mostly use apps:A Tracker: timeThis is an app that I use all day to let me know whether or not I'm maximizing my time through out the day.