I use this one, it date/time stamps my entries:
Welcome to ParentingTime.net.
This is the home of OPTIMAL™, the Online Parenting Time Information Manager and Activity Log.
OPTIMAL™ is a unique online service that can help you win custody, change custody, or reduce child support. OPTIMAL™ is used every day by thousands of parents and families worldwide.
The first person they see when they wake up and the last person they see when they go to sleep.