When comparing Things 2 vs Remember the Milk, the Slant community recommends Remember the Milk for most people. In the question“What are the best cross-platform task apps?” Remember the Milk is ranked 21st while Things 2 is ranked 25th. The most important reason people chose Remember the Milk is:
Smart lists are configured using Remember the Milk's syntax, making it very customizable.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Cloud sync
Users need to create an account for Things Cloud (the account can be created from any device). Once signed up, cloud sync will be active, and you’ll have to login on all of your devices to complete setup. From that point on, syncing happens in the background. It is invisible and always reliable.
Pro Daily review
At the beginning of every day, a yellow box appears at the top of the Today section, displaying all tasks scheduled for this day. You can investigate them, and then decide which ones you’ll have for that day and which one you’d rather want to delay.
Pro Easy to set up and use
Things 2 works from the moment you start it up. Simply add a task and when you want it done by. You can also add notes to tasks or tag when you need them. Things allows you to quickly and easily start keeping track of your tasks.
Pro Project support
Things 2 has a projects feature that allows you to organize your tasks together. You can select a project you need to get done and Things helps you focus on each task to get it done. You can even group projects together to focus on the most important aspect of your life at the time.

Pro Great for GTD
Things is one of the best apps of doing Getting Things Done.
Pro Nested tags
It's very easy filtering tasks that belong to various areas (etc private vs work)
Pro Responsive and easy naviagation
Logical and responsive navigation and editing. Easy to operate.
Pro Customized calendar
The calendar view (when selecting a due date for a task) is a customized, scrollable version of the default iOS calendar view. This makes it look familiar, but also functional for Things 2's requirements.
Pro Has its own syntax for programming smart lists
Smart lists are configured using Remember the Milk's syntax, making it very customizable.
Pro Semantic shortcuts
Remember The Milk has a list of semantic shortcuts that allow adding tasks and task options faster.
Pro Many features already working in the free version
The majority of commonly used features are available for free. The pro version adds increased functionality such as advanced sorting, mobile push notifications and sharing permissions.
Pro Excellent cross platform support
Whether you depend on an iOS, Windows or Android phone; Google Calendar or Outlook; Evernote or Twitter: RTM has an app or extension for you.
Pro Powerful query language
Query language can be used to build your own GTD-based system, with tags and lists and queries. Such as system can be used for private life and work alongside several simple lists without things getting mixed up.
Pro Location-based notifications
You can set locations for each task (for example a specific store, or a general location like 'near the beach' for shell collectors), and RTM will remind you when you are near or in that location. This can help keep your daily list uncluttered and remind you of errands you might have forgotten.
Pro Tasks may have additional options
Extra options such as how often it repeats, the due date, and the location.
Pro Support of a "start" date
A start date can be set which can be used with smartlists or to set a reminder.
Pro Lists can be shared
Share lists with other Remember The Milk users, or with iCal and more. Shared lists can be collaboratively updated. This makes it great for teams or just to share progress with others.
Pro Quickly add rich text
Remember The Milk offers Smart Add – shortcuts that allow you to quickly add advanced information to a task. For example, you can quickly add a due date, set the priority level, add a tag, set repeat times, add URLs, and add notes to your tasks. For the full list, check out How Do I Use Smart Add?
Pro Manual sorting
Manual sorting is available on both the web app and android, allowing prioritization of tasks. This can be particularly useful for shopping lists, where you can put all the meat together, and all the cheese together etc. to make it easier to skim through when you're in the store.
Pro Nice Android Widget
Compared to competitors like todoist, the widget doesn't use too much space.
Pro Really, really cool support
They react within hours, and they actually keep track of your issue.
Pro Support for keywords to set due/start date, add to list with one line of text
There are special characters which open a box so the user can select predefined values or a calendar picker.
Pro Lightning fast sync
Syncs quickly across all your devices and platforms.
Pro Syncs with Evernote
Not only syncing, it's more of a "linking" with a two-way synchronization. Changing the title of a note in Evernote will update the title in Remember the Milk. So far, Remember The Milk is the only to-do app with a feature like this.
Pro Add tasks via e-mail
You can add tasks to Remember the Milk via email easily once you get the hang of formatting the messages.
Pro Twitter integration
The Twitter integration is excellent and allows for many types of automation.
Cons
Con Expensive if you buy apps for Mac, iPhone and iPad (all sold separately)
As at May 2016 if buying all three apps it cost $80! That said there is no annual subscription and I've been using Things for years and have only paid once so far.
Con Poor calendar view
Could be more convenient with calendar interaction. Not an ordinary approach for visual people, if you want to see all the calendar events in the familiar format.
Con No file attachment available
Con No supported time based/location based alarms
Other apps have these abilities, and they are very useful. Especially for a $10 app, it would be great to include these premium features.
Con Subtasks only available in Pro version
Subtasks can break a longer to-do item into discrete tasks, helping you keep tabs on your progress.
Con Bad UI redesign
The web app takes up too much screen real estate and uses a half-screen format that requires a wide screen. The task edit screen is clunky. It still has UI bugs one year in. You can't complete tasks from the UI.
Con Free version lacks features
Mobile reminders, subtsaks, offline mode, Microsoft Outlook sync, priority, and more features are limited to the paid version ($39.99/year). To see the full list of restrictions, check out this page.
Con Does not support attachments
Cloud storage was recently added as a pro feature.
Con Cannot add task in notification bar
There is no pull down option to add a task in the notification bar.
Con Ugly icon
The goofy cow image does not fit well with a professsional office environment.
