I'm just saying I think the buy to own price is an order of magnitude too high relative to other significantly more complicated pieces of software.
If it's more than a todo app, OmniFocus sets a price point: https://www.omnigroup.com/omnifocus/
Yep, $150. So not scale or age, cuz it is the granddaddy gold standard.
At the same time, there are apps like Mindkit [0], which seem to do similar things as this, but with more features, but which cost 3000 JPY(20 USD) lifetime.
Personally, the only time I can justify 150 USD for a purchase of an app is when it has as many features or is as impactful as Word/Excel/Powerpoint combined.
No disrespect to the people who made it, good luck with the app!
[0]: https://apps.apple.com/us/app/mindkit-keep-things-organized/...
If the app enables you to do that then $150 to actually keep on top of tasks you need to do is an amazing bargain.