There is no wrong way of using 2Do, and unlike other to-do apps, it won't force you in adhering to a particular task management methodology.
PLUGINS:
Email to 2Do: Optional plugin that allows you to integrate your email address directly with 2Do, thus allowing you to email yourself tasks from anywhere. You can even use automation, such as IFTTT, to add reminders to your list.
SIMPLE TASKS, CHECKLISTS & PROJECTS
• Create simple tasks, or checklists and projects with sub-tasks. Tasks can have notes, attachments and multiple alarms.
• Set any task to repeat using a flexible set of options.
• Assign multiple alerts / reminders
LIST GROUPS, LISTS, INBOX & SMART LISTS
• In addition to built-in Focus lists that allow you to conveniently view upcoming, starred or scheduled tasks, you can create multiple lists to manage and organize your tasks.
• Built-in support for GTD Inbox
• Smart lists let you harness the true potential of 2Do using a number of search options, filters and search pre-sets. Using Smart Lists, you can create custom views of your tasks and use them to focus-in or find frequently managed tasks. ?
TAGS
• Manage tags from a dedicated Tags Panel
• Organize your tags within groups
• Leverage the powerful integration of Tags & Smart Lists to filter on frequently managed tasks.
?• Find Used vs. Unused tags
YOUR TASKS UNLIMITED
• Set a Start Date to hide tasks from a list before they're relevant and add Duration to put an estimate on the amount of time you’ll be spending on your task
• Add an action to call, write an email or trigger a URL Scheme right from 2Do
• Attach an image or a voice note to your tasks
• Customizations for time management
• Use as an events / party planner, or an effective birthday reminder
• Desktop-class Task Manager
Comments and Reviews
This is currently available with a Setapp subscription.
Wirecutter writes the following about 2Do in "The competition" section of their guide "The Best To-Do List App" [0]:
"Beehive Innovation’s 2Do is available for Macs, iOS, and Android, and it’s one of the most customizable apps we tested. It’s stuffed with features that make it powerful enough for even those tough-to-manage projects. 2Do’s projects are organized within Lists, and you can even create Smart Lists that will filter your tasks to show only what you’re looking for, and they’re all easily accessible from the app’s left panel. As useful as these features are, we found the app’s interface and syntax more confusing to get the hang of than that of TickTick or Things 3. If you can get past that initial learning curve, and you need something more customizable and more affordable than Things 3, 2Do is a great option."
[0] https://www.nytimes.com/wirecutter/reviews/best-to-do-list-app/
Are they still working with 2Do for Windows development? Seriously, it has been 8 years though.
2do is the best to-do-list app for iphone. not only does it look good, it also has very well thought out features (drag&drop for tasks, for example).
too bad it doesn't sync with rememberthemilk :( but toodledo sync works just fine.
Wow. I've been looking for a solid task management program for a long time now, and I've used ToodleDo's own app (which is a very close 2nd place), Remember The Milk (great app, but their Appigo debacle really soured my impression of them), and ToDo (from Appigo, see RTM comment above), but nothing comes close to 2do.
This is a beautiful and exceptionally useful app that is in my top 10 list of applications ever. If only they made a Windows port... ;-)