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All industries · head to head

Signal vs Todoist

Signal logo

Signal

All industries

Speak Freely

From
Free
Rated
-
Full reviewWebsite
Todoist logo

Todoist

All industries

The world's #1 task manager and to-do list app

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Signal signal must be installed on a phone before the desktop app can be used, so there is no phone-free desktop-only account; Todoist no built-in time tracking for tasks; requires third-party integration like Toggl
  • They diverge on capability: Signal covers End-to-end encryption, Todoist covers Natural language input.

Where they differ

Only the attributes on which Signal and Todoist actually diverge.

Attributes where Signal and Todoist differ
AttributeSignalTodoist
Pricing modelfreeUnknown
PlatformsWindows, Macos, Linux, Ios, AndroidWeb, iOS, Android, macOS, Windows
Founded20102007

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (All industries).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Signal

  • End-to-end encryption
  • Disappearing messages
  • Screen security
  • Group chats
  • Voice calls
  • Video calls
  • File sharing
  • No data collection

Only in Todoist

  • Natural language input
  • Recurring tasks
  • Projects and sub-tasks
  • Labels and filters
  • Priority levels
  • Productivity tracking
  • Templates
  • Notifications

Both cover

  • Cloud deployment

What people use each for

The jobs each tool is most often brought in to do.

Signal

  • Private messagingnot Todoist
  • Secure group communicationnot Todoist
  • Confidential conversationsnot Todoist
  • Journalism communicationnot Todoist
  • Family messagingnot Todoist

Todoist

  • Personal task managementnot Signal
  • Team project coordinationnot Signal
  • Goal trackingnot Signal
  • Habit buildingnot Signal
  • Daily planningnot Signal

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Signal

  • Signal must be installed on a phone before the desktop app can be used, so there is no phone-free desktop-only account

Todoist

  • No built-in time tracking for tasks; requires third-party integration like Toggl
  • Free plan limited to 5 personal projects only
  • No Gantt charts, resource allocation, or advanced project management features for large enterprises
  • Phone support not available; email and help center only
  • Calendar view and advanced filtering only available on paid plans

Pricing, plan by plan

Signal

Free
  • FreeFree
    • End-to-end encrypted messaging
    • Voice and video calls
    • Group chats

Todoist

Free
  • BeginnerFree
    • 5 personal projects
    • Smart Quick Add
    • Task reminders
  • Pro$5/month
    • 300 personal projects
    • Calendar layout
    • Custom task reminders
  • Business$8/month
    • Everything in Pro
    • Shared team workspace
    • Up to 500 team projects

Which should you pick?

Choose Signal if

  • You need end-to-end encryption.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android.
  • You also want disappearing messages.
Signal review

Choose Todoist if

  • You need natural language input.
  • You want to start without paying.
  • You work on Web, iOS, Android, macOS, Windows.
  • You also want recurring tasks.
Todoist review

Questions people ask

Is Signal or Todoist better?
Neither clearly leads. Signal starts at Free and Todoist at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Signal or Todoist?
Signal starts at Free and Todoist at Free.
Does Signal or Todoist run on more platforms?
Signal runs on Windows, Macos, Linux, Ios, Android. Todoist runs on Web, iOS, Android, macOS, Windows.
Can I use Signal for free?
Both have a free tier, so you can try either at no cost before committing.
What is Signal best used for?
Signal is most often used for private messaging, secure group communication, confidential conversations, journalism communication. Of those, private messaging and secure group communication are not what Todoist is typically brought in for.
What can Signal do that Todoist cannot?
Signal covers End-to-end encryption, Disappearing messages, Screen security, Group chats. Todoist covers Natural language input, Recurring tasks, Projects and sub-tasks, Labels and filters. Both handle Cloud deployment.

Answered from the vendors’ own pages

Todoist: Does Todoist work offline?

Basic editing and task management work offline, but advanced features like syncing reminders and shared updates require internet connectivity.

Source
Todoist: Does Todoist have a free plan and what does it include?

Yes, Todoist offers a free Beginner plan with 5 personal projects, Smart Quick Add, task reminders, flexible layouts, 3 filter views, and 1 week activity history. More advanced features require the Pro or Business plans.

Source
Todoist: Can I use Todoist on mobile devices?

Yes, Todoist offers native apps for both iOS and Android with over 30 million downloads. Mobile apps provide full task management functionality across devices.

Source
Todoist: What integrations does Todoist support?

Todoist integrates with over 100 apps including Slack, Google Calendar, Outlook, Microsoft Teams, Gmail, and Toggl Track. Additional integrations are available through Zapier, Make, and IFTTT automation platforms.

Source
Todoist: How much does Todoist cost?

Free plan is $0. Pro plan costs $5/month (billed annually) or $7/month (monthly billing). Business plan costs $8/month per user (annual) or $10/month per user (monthly), as of December 2025.

Source
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Related pages

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