From ACal Wiki
Maybe you didn't pay the semi-mandatory donation on the Google Market to get hold of aCal - perhaps you wanted to have a play around with it first and see if it was worth a couple of bucks. Of course now you have it, you're feeling guilty about that...
Well: you can donate to us anyway!
You could use:
- Bitcoin to pay account 1C7ChLNbwiQNWS6BLCPNU5TzX3ve7Xup2m
- Ripplepay to https://ripplepay.com/payUser/karora/
- Paypal to andrew (at) mcmillan.net.nz
- Flattr aCal
Some of these options are more creative than others, and at present I've decided that Flattr is my current preferred approach.