[vectran]

This is a very difficult topic and there are plenty of thoughts and blog posts available online. The need for a lawyer probably depends on whether you intend to raise capital or just see it as a short term project? For bringing in new founders you should look at some sort of vesting agreement to vest founders over time.

For general equity-split, the calculator below is thought provoking: http://foundrs.com/

However generally with two founders a 50-50 split is best as both of you need to be 100% committed for it to work out.

[dear]

Thanks for your reply! What do you mean by "vest founders over time"?

We are not intended to actively looking to raise capital (though we don't mind it) but neither do we see it as a short term project. We want to see growth of revenue and profit.