I've been curious about this for a while, so I decided to test for OTF lumens in my homemade integrating sphere this morning. I thought others might be curious about this too, so I decided to post my results here. I don't think I'll really use this app for anything, but I guess it's one of those tools that you have just in case you need it. Basically, if I have my phone with me, I've got my EDC light with me too, but I guess you never know.
The downloaded app I tested is the 'Tesla LED' flashlight app from the Android Marketplace. They claim to have the brightest app for Droid phones. For reference, I have the Droid 1.
Here are my results:
22.2 OTF lumens