There is an app called Wunderfind.
My story:
I lost my fitbit blaze today. It fell out of my band while I was cleaning house. I still had my band on. I downloaded several apps, they mostly wanted a paid service before usage. This free app worked great at finding it. It apparently fell out when I placed a book on a shelf that was taller than me. The fitbit app stated it was updated so I knew it was in the house after I did the dishes. Then I downloaded this app & it was wonderful in helping locate it. Range started at 10%, then I got up & walked around where I thought it might be. I got to 63% range & it was found. So happy now. I had only less than a 10% of battery on my blaze. It’s now charging & I will use a different band holder. Use this app to find Apple/Samsung watches or fitbits.
