Wow, it uses rechargeable batteries?!
Wait a minute... how much current does this thing draw, anyway? I've had my "Golden Power" alkaline 9V in my dirt cheap, probably very current-hungry digital multimeter for 2 years now. Intermittent use and no low battery yet. So rechargeable batteries will have nominal, if no effect. And frankly, if you've bought an iPhone you've probably already contributed more environmental damage than a couple of nine volt batteries.
I had a laugh when it is stated to have a more accurate resistance range than DC volts! I know of no multimeter with the same odd characteristics.
Also, "Continuity: Beeper on <25 Ohms and Beeper off >250 Ohms" - what happens between 25 and 250 ohms? On my dirt cheap multimeter, it made a kind of sick beeping sound at 33 ohms (specified to <25 ohms and >100 ohms), sort of like in between on and off, a low buzzing tone. But surely the continuity is implemented in software for the iPhone app?
Wait, is this just a multimeter without the display and with a Bluetooth interface stuck in place of an LCD??? It's starting to look a lot like it.