Thoroughly enjoying exploring PocketLab and its potential.
I have a few suggestions for the app, which I'm currently using on an Android tablet. If you do a long experiment, such as light or temperature over 24 hours, the line is quite thick when it is drawn. Could it be thinner to make reading the data easier? Possibly add the facility to zoom in on a particular range? Also, would it be possible to save the graph as well as the data? For a lot of the work in UK primary schools, the graph would be sufficient or a better output than raw data. If it was able to be exported as an image file it could be imported into other software for the pupils to annotate. I know they could screenshot it, but an export would be tidier.
Also, if the scale could alter itself to hours or even minutes it'd be useful. 86 400 seconds isn't as easily understood as 24 hours.