I dont understand some of the negative comments re the lack of upgrades. The strength of Things is that it creates a great compromise between complex apps like Omnifocus and simple List apps like Clear. If you want things like sub tasks, sub sub tasks, collaboration, mail integration, etc. etc. There are lots of other apps that can provide that. Things is a very mature and stable app that does what it claims to do very well. Its not perfect ( no Task management app is - Ive probably tried at least 30 of them) I appreciate that the Devs introduce major changes very slowly. Im sure they could easily have gone the feature bloat way a long time ago if they wanted to. Personally I would like to see timed reminders but not going to rant about it if it doesnt happen.
Still my go to task app. Ive tried them all and Things has the best combination of simplicity and power and reliability. If youre into GTD its the best option available
hockey_magnet about Things, v2.8.2