[ODK Community] Storage/Memory and Accuracy

I don't know what you mean by "accuracy". integers are 32-bit values;
decimal fields are stored as double-precision numbers.

For ODK Collect, as with all Android software, the running space of the
application is dictated by the hardware on which it is run.

ODK Collect requires enough space to hold the active form definition any
currently-displayed images, and the data structures needed to evaluate
constraints. If your form is very large or has very complex constraint
formulas, then it is less likely to run on smaller or cheaper devices. In
general, tablets with higher resolution screens will provide more space to
an application, so a higher-resolution tablet will handle a larger form
than will a smaller tablet.

These issues generally arise when your form gets upwards of 500 questions,
or makes heavy use of regular expressions for string pattern matching
("RegEx" processing is a particularly heavy user of working memory).

The website has some information on ODK Aggregate sizing:

··· On Thu, May 14, 2015 at 11:05 AM, Alexa Brockamp wrote:

I’m looking for the storage/memory and accuracy specs for OpenDataKit,
but can’t seem to find them online. Can anyone fill me in regarding these
aspects of the program?


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Mitch Sundt
Software Engineer
University of Washington