When comparing Todo.txt vs IQTell, the Slant community recommends Todo.txt for most people. In the question“What are the best to-do list apps for Android?” Todo.txt is ranked 5th while IQTell is ranked 10th. The most important reason people chose Todo.txt is:
Todo.txt can be edited in plain text and then displayed with neat styles.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easily editable format
Todo.txt can be edited in plain text and then displayed with neat styles.
Pro Editable from any text editor without needing any proprietary software
Because todo.txt is just a todo standard with various compatible apps to edit it, you can update it from any device as long as it can edit text and you can access your todo.txt file
It's convenient to be able to access your todo list quickly via your programming environment so you don't have to switch contexts, and to have a separate todo.txt file per project.
Pro Works with lots of apps for every platform
Todo.txt lists can be edited in virtually every text editor ever made and accessed on devices that support Dropbox. The user community has also created a number of apps for dozens of platforms.
Pro Command line support
You can edit your lists using the command line (e.g., Terminal) via a supplied bash script.
Pro Full control over your to-dos
You have full access to the underlying programming rules, and therefore total control over your task lists.
Pro Extensible
Has been extended to include most things people want, including a multiple of interfaces and app for all platforms.
Pro Easy syncing
Todo.txt automatically and seamlessly syncs through Dropbox.
Pro Wide range of interface apps
The community has developed a wide range of apps that interface with the basic file structure. These apps vary in how much they accomplish, how much hand-holding they do, their level of glitz, etc. They range from plugins for an editing app like vim to stand-alone, platform-specific GUI's. So YMMV depending on what you use. (todopy is particularly nice, a Python program that has a "console" mode which provides a keyboard-driven GUI.)
Pro Follows the unix philosophy
Does one thing: to do lists
Pro It's free
It runs on MacOS, Android, and Python (in the Mac's Unix CLI) -- all for free.
Pro Easy to sync up between lots of devices and interfaces
At a bare minimum you just need to be able to edit text, but there are many apps and advanced interfaces you can install on many devices to supplement your to-do list editing.
Pro Works on all platforms
Available as a Chrome app on desktop operating systems and as an Android and iOS apps.
Pro Integration with Box, Google Drive, Dropbox and OneDrive
Allows adding reference material to projects and actions linking to several known cloud services.
Pro Application wide tagging system
Any item can be tagged, all tags are centrally managed. If Evernote integration is activated, tags are synced between IQTELL and Evernote.
Pro Fast response from support
Support responds quickly to any questions you may have.
Pro Feature rich
Integrated email, calendar, Evernote, project and task management, contacts all in one app.
Pro Mark emails as received, sent to tasks, projects, or waiting for items
With a quick selection you can turn an email into a new task, add it to a project or create a waiting for item. The email is moved from your inbox but available in the task or project. If it's a "waiting for", it will automatically add the To into the Delegated To person.
If you're importing from Gmail, you can use Gmail labels as tags in IQTell.
Pro Aggregation of email
Aggregates your email from all of your different email providers. Allows reading and managing your Exchange, Gmail, iCloud, etc emails all in one place. There's support for both unified inboxes and separate inboxes for each account.
Pro Convert email to calendar appointment
Convert e-mails to calendar appointments. The e-mail will be linked to the appointment so that you can access it within the calendar event.
Pro Full-time featured email and calendar client
Your can create, modify and delete emails, appointments, invitations and reminders for multiple email accounts directly in IQTELL.
Pro Easy to customize
You can add custom fields to all item types, and add custom relationship between items (i.e a project can be linked to a customer or a mail linked to a contact).
Define how data is copied when an item is copied into another (I.e a mail copied into an action or project).
Pro Can convert evernote checkboxes to actions automatically
Just add checbox to an evernote note, tag the note with the "action" keyword and iqtell will convert checkbox to subtask automatically. Every checboxes will be automatically converted into a single subtask of an action with the evernote title as title.
Pro Allow collaboration on projects and actions
Delegate project and actions to friend, coworkers, customer.
Work together by adding content, discussing and planning each item.
Pro The IQTell team listens to suggestions and requests from users
IQTell is being updated all the time to improve on an already great system!
Pro Make recordings of trips and save via iPhone/iPad, recover them later using EOBD Facile application
Cons
Con No support for reoccurring tasks
Tasks have dates corresponding to creation and completion, but there is no explicit support for due dates or for tasks that reoccur.
Con Nested tasks not supported
Many todo tasks for developers end up having sub tasks that need to be performed for a parent task to be completed, but the todo.txt format does not have any nesting.
Con Android app not updated since 2013
The app only seems to support Dropbox. It would be nice to see support for different and newer file storage services.
Con Discontinued as of August 1st, 2017
Con Only works in Chrome
Not everyone wants to use Chrome.
Con Doesn't integrate with IFTTT
Con Unsure future
Some time ago IQTell were prepared to close due to lack of funds, but something must have happened (they received funding) that gave them another two years of life, but after those two years are over it's not sure what will happen.
Con Steep learning curve
The interface can seem overwhelming at first.