Optical super, facilities improvement

The optical conversion I find really great. The handwriting input I really like where this is more appropriate for a tablet of course as on a comparatively small smartphone.
Unfortunately, there is not the possibility of tasks to be expected in a random order. You have to opt for a series of numbers and this is interrogated in succession. Random tasks within a series of numbers and also across the different series of numbers would be really necessary.
Likewise, a selectable time frame or a timepiece would be helpful and motivating.