When comparing Google Keep vs Remember the Milk, the Slant community recommends Google Keep for most people. In the question“What are the best cross-platform task apps?” Google Keep is ranked 16th while Remember the Milk is ranked 19th. The most important reason people chose Google Keep is:
1-step to take a note on Android: tap 'take a note'. Web version: cursor is on the note itself.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to use
1-step to take a note on Android: tap 'take a note'.
Web version: cursor is on the note itself.
Pro Super fast to use
The focus on a minimal interface makes everything fast to use on both web and mobile. This comes in handy for when a note needs to be jotted down quickly, as there is little to no load times or faffing about trying to get to a space where the note can finally be recorded.
Pro Unlimited and seamless sync across all Google connected devices, from mobile to desktop
When a mobile device isn't in use, Google Keep can be accessed as a Chrome app or as a website. Basically, no matter the device being used or the OS on it, there is always a way to access the app. There is also no limitation to how many devices this can be done with, freeing up the user to always have access.
Pro Automatic saving
Automatically saves new changes so that nothing is lost.
Pro Useful Android home screen widget
The Keep widget lets users quickly see existing notes and add new ones.
Pro Notes can be grouped via labels
In addition to the ability to color-code notes, they can be labeled and navigated and grouped that way. This allows for easy organization, to then be found easily at a later date.
Pro Notes can be color-coded
Pro Cross platform
This app can be used seamlessly across all platforms including Android, iOS, and desktop computer platforms.
Pro Works as a great bookmarking tool as links added can optionally include a preview image
Keep has a great feature that allows you to save sites you visit as a special note type with a link and a preview image.
Pro Can share and collaboratively edit any item including lists
Keep allows sharing any item with other contacts and editing them together at the same time. This way a team can work together in real time, no matter their location.
Pro Really well implemented speech-to-text
Google has a lot of experience with speech-to-text functionality and they did a fantastic job with Keep. This means you can easily record spoken notes that can then be changed to a text based note.
Pro Notes can include photo and audio attachments
Notes can include multimedia attachments in addition to text.
Pro Supports drawing or writing notes by hand
Newer version of Google Keep now supports drawing on either a blank page, existing notes or in an image attached to the note.
Pro Both location- and time-based reminders
You can set reminders that bring certain notes to your attention when you arrive at a specified location or when it’s a specified time or date. Unfortunately you can only do one or the other for each note.
Pro Includes character recognition for text in images
Google Keep lets users take pictures of physical notes and makes the contents searchable within the app. This can be a convenient time saver for those that do not want to type out the necessary info, but rather take a quick snapshot of it.
Pro Drag and drop sorting
You can move cards manually, which is great for prioritizing to-dos. Within a card, you can also drag and drop items.
Pro Archives finished tasks
Any finished task is archived and can be searched at a later date.
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 Google can access and mine your data
You have to be okay with Google analyzing and using your data in order to use Keep.
Con Messy if you have lots of notes
It can be difficult to organize notes because you can only create labels and not, for example, separate projects.
Con Organization is limited to just multiple tags for notes
There are no folders in Keep that you can move notes into. It makes the user interface more cluttered, and navigation gets more difficult.
Con Can be taken down some day
As Google is notorious for taking down services, you may end up with just a backup of your notes in XML format and a need to look for a substitute.
Con No ability to undo changes
There is no way to revert changes or restore text you may have accidentally deleted (however, you can restore entire notes for up to 7 days after deletion).
Con Synchronization bugs
There are some issues with synchronizing data including laggyness and returning old/deleted items.

Con No text formatting
No basic formatting like bold, italics. Makes it harder to do things like meeting notes. Keep is intended as a minimal and quick note taking app, but sadly for those that are looking for something more robust, the features are just not there.
Con Scrolling through notes is horrible
There are no options to decrease the surface area of the notes to make it easier to get an overview. Compare this to something like the Apple Notes or Evernote UI, for example. You can't organize nor have a glance of what you have.

Con Not free/libre
This application is proprietary, and thus cannot be modified or freely distributed.
Con Can be difficult to discover the features
Google Keep has slowly been introducing new features, but doesn't do a good job of helping you discover them.
Con Google account required
You're required to have a Google account in order to use the app.
Con Does not offer themes
There is no option for changing the color theme (such as a dark theme) unless you use a 3rd party extension.
Con Does not integrate with Google Calendar or Tasks
It does not integrate with Google Calendar or other Google Apps with the exception of "Google Now." Keep reminders can appear on Google Calendar, but you can not get reminders and use Tasks at the same time.

Con Too simplistic of an approach
Con No integrated social media sharing
There is no integrated social media sharing if you directly want to post your note to Twitter, Facebook, etc.
Con Not good at all for longer notes
With almost no formatting options whatsoever it's hard to actually use Keep for long-form notes.
Con Sharing within team doesn't work that well
You can share separate notes but not Projects, Wordspace, or Teams.
Con Not distributed
Cannot run on own servers as Keep will only run on Google's own servers. This increases the risks which are normally associated with handing over critical applications to a large (US) corporation.
Con No notifications when tasks are added to shared lists
Although the ability to collaborate on lists is advanced, Keep will not let you know when another person adds an item to a list you share.
Con No API
Con There is a label limit up to 50
Con No dedicated app for windows, linux, mac (except unofficial)
Con Cannot share groups of notes (e.g., labels)
Google's equivalent of groups are labels, which can't be shared. By comparison, Trello allows you to share boards with others. Trello also supports grouping through teams. Google Keep has no such concept.
Con Slow to save the updates
Saving is delayed by a moment and the saving status UI is unclear. You can lose updates if you close the tab too quickly.
Con Delay between to-do entries
The keyboard closes and reloads between to-do list entries, so the first letters or words may be missed if you’re trying to quickly create a list.
Con Notes get lost/deleted and can NOT be recovered
Since nothing is stored locally on the phone, everything can go missing. Google can't recover any of it.
Con No BlackBerry 10 app
No BlackBerry support apart from web.
Con No Windows Mobile app
No Windows Mobile app, and it is unlikely to ever be produced.
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.
