Pocket Light Meter app: suitable for pinhole photography

Normally I calculate my exposure times for pinhole photography by "guesstimation", especially when I use my converted Gevabox or Agfa Clack. 

But sometimes I want to measure the light more securely. When I didn't bring my real light meter, I use the Pocket Light Meter app on my iPhone (also available for android). This app has a minimal ISO setting as low as 0.8 and maximum aperture as high as f/512. This makes this app very usefull for pinhole photography and for using photo paper as a negative. And it is very accurate too. I compared it with my digital camera. 

The app is free (with small add in the top of screen) or only $1.00 for the add free version. See for info:
http://www.pocketlightmeter.com.

(screenshots from the app)

The app has some nice features. It shows also the EV values, if desired. And you can "HOLD" the screen - holding your last reading. You can also take a small snapshot to log the used settings - and add some notes. Here is an example (jpg, 150 KB):

(sample of a snapshot made with the app)

The app can also sync with Dropbox to save the snapshots for later. Coming back home you can check the snapshots to see what settings you used when & where: the file names show date & time stamp. 
 Here you'll find a small test of this app.