Like Jhon,
The required duration of use is 20-50 yr so the raw data needs to be portable and permanent across generations of operating systems. Export raw data to csv and txt files or at least standard spreadsheet format would be essential.
My reloading records are mostly QC, so reports with run charts of data like pre and post sizing cartridge headspace , cart length, case base to ogive,powder throw weights and their calibrators would be really handy. For example, over a few years the press wears or stretches and seating depth can increase, requiring readjustment to get back to the original target dimensions.
Another key feature which ive found very hard to xapture on paper is to record load development testing at the range.
I need to record the for each of 20 shots: powder charge,seating depth, case base diameter ( at .200" from the rim) before and after firing, chrony velocity, case inspection like bolt lift primer pocket and smears, plus which target they were shot on mean point of impact and group size for each trial load. Also some check or verification ive actually re orrded the data i intended in each box and shot the rounds i intended to ( i usually muck this up at least once each session). Capability to store photos of case bases and targets would be helpful. This makes for a very messy paper based record.
I would pay NZD50 to 100 for a combo that runs on phone and laptop. You might be be better to go for tablet for mat for a start. A free version that can just read and export data is a good idea. People will continue to keep paper records till they are familiar with an app.
The app must require no permissions like internet access , data sharing with other apps, but possibly the use of the camera when requested as suggested.
Unlike Jhon i dont want anything in the cloud; local storage only please. No advertisements or links to reloading gear supplier web sites in the paid version please.
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