When comparing Toodledo vs Firetask, the Slant community recommends Toodledo for most people. In the question“What are the best GTD apps?” Toodledo is ranked 6th while Firetask is ranked 33rd. The most important reason people chose Toodledo is:
It's possible to create a to-do item by sending or forwarding an email.
Specs
Ranked in these QuestionsQuestion Ranking
Pros

Pro Can create to-do items via email
It's possible to create a to-do item by sending or forwarding an email.
Pro Decent filtering and sorting
Pro Priority organizing
Pro Great GTD implementation
The GTD principles are very perfectly supported by Toodledo.
Pro Functionality-rich
Integrated sharing, note taking, habit tracking, and outlining make this a more powerful tool than a simple list of to-dos.
Pro Upload From CSV
Quickly upload an excel (CSV) file template of tasks to a folder for complex but repeating projects.
Pro Well documented, free-to-use JSON API
If you adopt Toodledo as your productivity system, you can be confident that you can extend it to fit your needs with this programmatic access.
Pro Can tag items
Pro Space to add lengthy text
Notes area that can then be hidden.

Pro Sends a daily email reminder
Toodledo reminds you via email of the tasks on your plate for the day.
Pro Apple Watch support
Integrated support for Apple Watch lets you check on your to-dos on the run.
Pro Easy to use
Simple enough that a child can easily learn to use it. New tasks are quick and easy to enter.
Pro Many options for timing repeating tasks
Pro Shows only the first task of a project
Keeps the app uncluttered.
Pro Made to match GTD methodology
All of the steps are built into the app with no tweaking needed. For example, tasks can be assigned a context as well as a project.
Pro Excellent customer service
Company responds quickly to questions and is helpful and attentive.
Cons
Con Free version limited to 20 folders
Con Android app has annoying notifications
Whenever the app fails a background sync action for any reason (server issues, lack of internet connection, etc.), a notification appears.
Con Good as a starting point
Toodledo is a good starting point, but is essentially the same as an Excel spreadsheet where you have to build your workflow via the saved searches.
Con Only available for Apple products
Con High price point
However, a fully functional free trial is available.
Con Not as full-featured as OmniFocus
Con Cannot share tasks with others
