Test bookkeeping app for suitability

I'm the recently appointed treasurer of a charity who have been using spreadsheets to maintain their accounting records. I'm searching for suitable software. I've tried a number of accounting packages but have not found anything suitable. I'd like to test Akaunting's bookkeeping app to determine if it will meet our needs. Is there a time-limited trial version of the bookkeeping app or any way of testing its functionality?

It's the double entry booking app I'd like to test please.