For what it's worth. I started my company with a B2B solution developed in VB6. Now 20 years later I moved to Cloud/SAAS long time ago. But wouldn't you know, about half of my clients still run mission critical processes with the desktop client that received it's last update in 2018. Another one is scheduled for this year.

Can somebody recommend a simple app to do the following: keep a list of tasks and estimations of time required to complete them. When I insert an item between existing tasks, all the dates of subsequent tasks should be automatically updated. That is really all I need, but so far I have not find to right tool for this.