DSO nano as data logger

If anyone could suggest a solution I would be very interested.
I would like to change the software a little so I can record with sample rates from 0.01Hz to 1kHz as this would make the device very useful as data recorder in biological and mechanical experiments as well as studying the physic activity of humans.
I once was a electronic nerd, but that was many decades ago and now I want to use the electronic gizmos for real world studies.
A low cost data recorder with a display would really be great. I am too old to carry around a heavy lap top and A/D-interface