I generally don't do long answers but I've done what you are suggesting so stick with me. I worked in a school and created a saas product as a sideline. This w

I generally don't do long answers but I've done what you are suggesting so stick with me. I worked in a school and created a saas product as a sideline. This was very manageable in the world of school. I joined an IT company 8 years ago and brought my saas product with me. My product requires very little support so the new company were happy to let me do my full time work and let me look after product. The company even thought they may get involved with my product but it differed too much from their vision. 8 years on I now work 3 days a week for the company and 2 days a week on my on own saas product and I'm very happy. The company have been very supportive. Some people here are saying don't do it, think of your kids. I started my sideline as I wasn't making enough to save any money and wanted to put some money aside for my kids. My kids and I (who are now adults) are very close. Do what you think is best. I think it's important to be honest. If you go down this route make something that requires as little interaction with your users as possible. It was always important for me not to be the guy sneaking out to take calls. I reckon a good starting place would be setting aside an evening or something and sticking to a fixed amount of time. I've been down the road of a full time job and sideline taking up my whole week. I won't go back there again. I don't work on Saturdays. I don't really work on Sundays either but I'm very involved in my church which is another type of commitment. Have a good think about why you want to do this? Having my own thing which I made and try to grow fires me up. Know what your reasons are so you don't end up disappointed.