I’m a sucker for productivity apps, but one app that has been highly recommended by many folks that I haven’t tried is Things, mainly due to the price.
Prior to using Things, I was hacking together a similar solution using Wunderlist (which is free). Things feels like a productivity app designed with GTD in mind, but has a nice balance between the simplicity of Wunderlist and the power of Omnifocus (which is also incredibly expensive, so I have yet to try that).
One minor quirk I’ve found is that I can’t set a reminder for a task, which seems like a strange oversight for me, but I just work around that.
If you haven’t tried Things yet, I’d recommend you download the app while it’s still free and give it a whirl. I tried it for a day or so and ended up buying the Mac app. No regrets so far!