When comparing aCalendar vs IQTell, the Slant community recommends IQTell for most people. In the question“What are the best to-do list apps for Android?” IQTell is ranked 10th while aCalendar is ranked 24th. The most important reason people chose IQTell is:
Available as a Chrome app on desktop operating systems and as an Android and iOS apps.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Good Tasks integration
Tasks get shown in the calendar, although there is also a separate tasks view. It supports Google Tasks and recurring tasks.
Pro Very convenient user interaction
Switching from day<->week<->month views by swiping laterally is a powerful feature.
Pro Lots of customization options
The settings menu is rather detailed and includes a good selection of color themes to choose from, possibility to adjust font-size, set beginning and end of day, ability to choose what views to use and more.
Pro Free, ad-less version available
aCalendar is an Android app that comes in free, ad-less version as well as this paid version.
This paid version aCalendar+ adds more features like agenda view, home screen widget and the ability to manage Google Calendars. The developer also donates some of the profits from this Pro version to help protect the endangered mountain tapir.
Pro Nice presentation
The three views are very convenient, particularly the week view, which shows the week position inside the month
Pro Good fullscreen widgets for all views
The app has widgets for day, week and month views.
Pro Color-coding support
The app has 48 calendar and 12 event colors.
Pro Can add public holidays to calendar from over 35 countries
For the 30+ available languages for the app, there are holiday calendars available to be added.
Pro Lunar calendar support
aCalendar can be set up to use a calendar based on cycles of the lunar phases.
Pro Unique Week overview
Its week overview is very well suiting for tasks and all day events. It shows everything at once.
Pro Drag'n'Drop
Drag'n'drop functionality is available in day view with this paid version of the application.
Pro Useful 3-finger tap to go to today
By utilizing a three finger tap shortcut users can easily got to the today view from anywhere in the app.
Pro Available in 30 languages
There are 3o user made translations available for the app, making for a good calendar to use in different countries.
Pro QR and NFC barcode sharing of events
Using both QR codes as well as NFC, users can share events wirelessly and easily
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 Free version is very limiting
Free version of the application does not include common things like the agenda view, actionable notifications or attendee management among many other more advanced features.
Con Somewhat overwhelming amount of options
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.