This might sound crass but... use a computer. There are millions of applications that run on computers to do those things. If you are growing tired of the lock

This might sound crass but... use a computer. There are millions of applications that run on computers to do those things. If you are growing tired of the lock in of an application and want something that will work on all devices and for the rest of time, try using a computer in a basic way by just storing text files in a folder. I have one folder of text files that follows me around on every device thanks to Dropbox. My `todo.txt` is there, my `shopping-list.txt` is there, my `calendar.txt` is there, my `travel +notes.txt` is there. If I want to find an item with a particular tag I use what ever OS to filter by the files by `+tag-name`. I use `+` instead of `#` that twitter uses for tags because sometimes `#` will mess with an OS searching for files.