CustodyLogic was built by AJ, a software engineer who watched a close friend struggle through a difficult divorce.

My friend had a complex 2-2-5-5 schedule and was constantly stressed about "who has the kids" on random Tuesdays three months in the future. He was using spreadsheets, counting days on his fingers, and worrying about making a mistake that could cause conflict with his co-parent.

I realized that while the legal system defines the rules, parents are often left without the tools to visualize those rules easily.

I built this tool to be simple, private, and free. It doesn't ask for your children's names, it doesn't store your data on a server, and it doesn't require a login. It just does the math so you can focus on being a parent.