Request for suggestions: algebraic equations in Free42

[SammysHP]

With all the new recent features that are not available in the HP 42s I wonder if it should still be called Free42. Also, while I think that every effort in creating a useful software should be appreciated in one way or the other (and if it's just by donating money), I heavily prefer open source software. So if this results in a paid closed source software, I'm not really interested in it.

But you could start by publishing a donation version of Free42 in the app stores (something in the $3-4 range) and see how many users are willing to pay for something that they can get for free. Sadly the stores keep a big part of the money. Adding a PayPal link in the app might work better, but is not allowed AFAIK (all in-app payments must be done through the app store).