I got three of these. 1 of the 3 was different using a different app. No key ring, so you have to crack it open. It pairs good though!

It took me a while to figure these out.  First problem, there is no key ring included.  You have to crack it open and use wire to feed in.  I think they should have included a key ring with the unit. It was difficult to crack open and precisely insert a piece of wire.  Then it took me a while to figure out that 1 of the 3 is slightly different.  2 of them connected using the isearching app.  The 3rd connected using the Dycoo app.  I have to say they all connected once I figured this out.  However, having to open different apps feels totally unnessary.  I do like the ability to take pictures with my phone by clicking the tile to trigger the phone.  I also like you can name each device in the app.  I have my keys, my wifes keys and my daughter.  So... I do see alot of positive features with this, but the fact is quality control is not good receiving different model's in the mail.  I do like the isearching app better than the Dycoo app.  Another cool feature is you click the button twice on the tile and it triggers you phone to make noise too.  I like that feature alot.  If it had a key ring and I didn't receive different models requiring two different apps, then I would have given it a 5 star...