TODO LIST APP
I have used a todo app for decades.
My todo list includes simple tasks, repeating reminders, projects with multiple todo items, etc.
I keep my todo list on my iPhone. I have no need or desire to share it with my other devices or with other people.
For several years I have been using TODO by Appigo. However, a year or two ago they FORCED me to "upgrade" to their cloud-based version. So now, all my todo's are in the cloud instead of on my private device.
So I started looking for a new app. These days however, every single todo app keeps your data in the cloud, including even the "reminders" app that comes with iPhone.
So if my data MUST be in the cloud, it would nice if I trusted the domain that hosted it.
So I am suggesting that you create a TODO app.
For the "projects with multiple todo items" I suggest to use Joplin, you can use it localy or with any cloud providers (since you can encrypt your notes).
For the reminders it would be a great idea for the calendar (when we'll have real notifications).
I second this, I don’t want to use Apple reminders, I want a secure and private To Do list.