Checking out #NotePlan . What I like?
• file over app concept; local files in markdown format ⇒ files are under my control even thought app might go out of biz
• It it interoperable with @obsidian . I can use both together, if I want. How nice!
• It even supports the same format for linking to a heading in a note like #obsidian - [[note#heading]]
• Syncs via iCloud. I have to pay a commercial license & for sync in Obsidian. If I use #setapp (https://setapp.com/) it becomes even more cheaper since I can use lot of other apps for the same price
• Availability of bi-directional links
• In addition to all these, I like their integration of tasks and calendar into note taking - both of mobile and mac
Testing it out for a while. So far, I use a note-taking app for a day and then switch to obsidian because Obsidian is beautifully designed. Let me see how long I use NotePlan 
Got to know NotePlan from the list shared by @kvistgaard here: https://www.strategicstructures.com/?p=2591