Creating a co-parenting app or shared calendar for communication

Is anyone using one of those apps like OurFamilyWizard or Talking Parents? My ex and I do okay but we're still texting about scheduling and expenses and sometimes things get misconstrued. I've heard these apps help keep things more professional and documented. Worth the money or am I overcomplicating things? We're not hostile or anything, just want to make sure everything is clear so there's no confusion later.