In my experience, one of the biggest mistakes startups make is not defining a clear shareholders agreement from day 1 - just leads to conflict down the road. Wh

In my experience, one of the biggest mistakes startups make is not defining a clear shareholders agreement from day 1 - just leads to conflict down the road. While you could hypothetically write your own, if either you or your partner have never done so in the past I strongly recommend you bring in an outside party, as they will force you and your business partners to have discussions you may not want to have otherwise (i.e. what to do if one of the partner gets a job offer and chooses to leave the company shortly after your product launches, what to do if one partner wants to buy another partner out, etc... Agreed don't spend it on TOS though, you can build a pretty strong one yourself by reading similar sites TOS for inspiration.