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Productivity · head to head

Microsoft 365 vs OmniFocus 3

Microsoft 365 logo

Microsoft 365

Productivity

Subscription bundle of the Office applications with mail, storage, meetings and organisational identity

From
$7/month
Rated
-
Full reviewWebsite
OmniFocus 3 logo

OmniFocus 3

Productivity

Professional task management for complex workflows

From
$74.99/mo
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Microsoft 365 business plans are capped at 300 seats, so an organisation that grows past that must move to Enterprise plans, which changes both the price per user and the feature mix at the moment it can least afford a migration project.; OmniFocus 3 apple platforms only apart from the web client: macOS 14, iOS or iPadOS 17, watchOS 10 or visionOS 2 and newer are required, with no Windows or Android app
  • They diverge on capability: Microsoft 365 covers Office applications, OmniFocus 3 covers GTD-based task organization.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Microsoft 365 and OmniFocus 3 actually diverge.

Attributes where Microsoft 365 and OmniFocus 3 differ
AttributeMicrosoft 365OmniFocus 3
Starting price$7/month$74.99/mo
Pricing modelsubscriptionone-time
PlatformsWebMacOS, IOS, IPadOS, Web
FoundedUnknown1993

Identical on both: free tier (No), user rating (Not yet rated), category (Productivity).

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 Microsoft 365

  • Office applications
  • Hosted services
  • Teams
  • Microsoft Entra ID
  • OneDrive storage
  • Device management and endpoint protection
  • Purview compliance
  • Copilot

Only in OmniFocus 3

  • GTD-based task organization
  • Projects and subprojects
  • Contexts and tags
  • Custom perspectives
  • Automation
  • Quick entry
  • Sync across devices
  • Deferred and due dates

What people use each for

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

Microsoft 365

  • Any organisation that wants mail, documents, meetings and identity from one supplier on one bill.not OmniFocus 3
  • A company standardising on single sign-on, where Entra ID becomes the account other services authenticate against.not OmniFocus 3
  • Regulated work that needs retention, legal hold and eDiscovery across mail and documents, provided the tier that includes them is actually bought.not OmniFocus 3
  • A household that needs installed Office applications on several machines rather than browser-only editing.not OmniFocus 3

OmniFocus 3

  • Getting Things Done style task and project management on Apple devicesnot Microsoft 365
  • Capturing tasks with contexts, defer dates and review cyclesnot Microsoft 365
  • Syncing a personal task database across Mac, iPhone, iPad and Watchnot Microsoft 365

Where each one falls short

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

Microsoft 365

  • Business plans are capped at 300 seats, so an organisation that grows past that must move to Enterprise plans, which changes both the price per user and the feature mix at the moment it can least afford a migration project.
  • The compliance capabilities most organisations eventually need, including retention, data loss prevention, advanced eDiscovery and insider risk, sit at the top tier or in add-ons, so the real cost surfaces after an audit or a customer questionnaire rather than at purchase.
  • Annual term subscriptions commit you for the year and month-to-month terms cost measurably more per seat, so the flexibility to reduce seats during a quiet period is bought at a permanently higher rate.
  • Entra ID becomes the identity for everything else the organisation uses, which is the hardest kind of lock-in to put a number on, because leaving means re-federating every connected application rather than simply replacing a word processor.
  • The licensing model is complicated enough that most organisations are either over-licensed or quietly non-compliant, and reconciling it usually requires a partner or a specialist, which is a recurring cost that never appears in the advertised per-user figure.

OmniFocus 3

  • Apple platforms only apart from the web client: macOS 14, iOS or iPadOS 17, watchOS 10 or visionOS 2 and newer are required, with no Windows or Android app
  • Web access is not included with a perpetual licence and costs an extra $4.99 per month or $49.99 per year
  • The Pro perpetual licence costs $149.99 against $74.99 for Standard
  • Future major upgrades are a paid discount rather than free for perpetual licence holders
  • The $99.99 per year subscription is the only option that bundles Pro plus web access

Pricing, plan by plan

Microsoft 365

$7/month
  • Microsoft 365 Business Basic$7/month
    • Email and calendar with 50 GB mailbox
    • Web and mobile versions of Office apps
    • Microsoft Teams included
  • Microsoft 365 Business Standard$14/month
    • Desktop versions of Word, Excel, PowerPoint, Outlook
    • Email and Teams
    • 1 TB cloud storage per user
  • Microsoft 365 E5$60/month
    • Comprehensive security and compliance
    • All productivity apps
    • Advanced analytics

OmniFocus 3

$74.99/mo
  • Standard License$74.99/mo
    • Mac, iPhone, iPad, Apple Watch, Apple Vision Pro access
    • All 4.x updates included
    • 30-day money-back guarantee
  • Pro License$149.99/mo
    • Mac, iPhone, iPad, Apple Watch, Apple Vision Pro access
    • All 4.x updates included
    • 30-day money-back guarantee
  • Subscription (all platforms + web)$99.99/year
    • Mac, iPhone, iPad, Apple Watch, Apple Vision Pro, web access
    • All Pro features
  • Web-only Subscription$4.99/month
    • Web access only

Which should you pick?

Choose Microsoft 365 if

  • You need office applications.
  • You also want hosted services.
Microsoft 365 review

Choose OmniFocus 3 if

  • You need gtd-based task organization.
  • You work on MacOS, IOS, IPadOS, Web.
  • You also want projects and subprojects.
OmniFocus 3 review

Questions people ask

Is Microsoft 365 or OmniFocus 3 better?
Neither clearly leads. Microsoft 365 starts at $7/month and OmniFocus 3 at $74.99/mo, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Microsoft 365 or OmniFocus 3?
Microsoft 365 starts at $7/month and OmniFocus 3 at $74.99/mo.
Does Microsoft 365 or OmniFocus 3 run on more platforms?
Microsoft 365 runs on Web. OmniFocus 3 runs on MacOS, IOS, IPadOS, Web.
What is Microsoft 365 best used for?
Microsoft 365 is most often used for any organisation that wants mail, documents, meetings and identity from one supplier on one bill., a company standardising on single sign-on, where entra id becomes the account other services authenticate against., regulated work that needs retention, legal hold and ediscovery across mail and documents, provided the tier that includes them is actually bought., a household that needs installed office applications on several machines rather than browser-only editing.. Of those, any organisation that wants mail, documents, meetings and identity from one supplier on one bill. and a company standardising on single sign-on, where entra id becomes the account other services authenticate against. are not what OmniFocus 3 is typically brought in for.
What can Microsoft 365 do that OmniFocus 3 cannot?
Microsoft 365 covers Office applications, Hosted services, Teams, Microsoft Entra ID. OmniFocus 3 covers GTD-based task organization, Projects and subprojects, Contexts and tags, Custom perspectives.

Answered from the vendors’ own pages

Microsoft 365: What is the difference between Microsoft 365 and Office?

Office was a one-off licence for a specific version. Microsoft 365 is a subscription covering the applications and the hosted services together, and when payment stops the applications drop to a reduced state rather than continuing as they were.

OmniFocus 3: How much does OmniFocus cost?

OmniFocus offers perpetual licenses at $74.99 (Standard) or $149.99 (Pro) for one-time purchase, or subscriptions at $99.99/year for all platforms plus web, or $4.99/month for web-only access.

Source
Microsoft 365: Is Teams included?

Not automatically for newer customers. Microsoft unbundled Teams and now sells it alongside the suite, so check what a given quotation actually covers.

OmniFocus 3: Does OmniFocus offer a free trial?

OmniFocus includes a 14-day free trial for download, and a 30-day money-back guarantee applies to perpetual licenses.

Source
Microsoft 365: What happens to our files if we stop paying?

The documents remain yours and can be downloaded, but access to hosted mailboxes and sites ends after a retention window, so leaving requires a planned export rather than a cancellation.

OmniFocus 3: What platforms does a single OmniFocus license cover?

A single OmniFocus perpetual license includes access across Mac, iPhone, iPad, Apple Watch, and Apple Vision Pro.

Source
Microsoft 365: Is Copilot part of the subscription?

No. It is a per-user add-on on top of the base licence, generally with its own term commitment, and it is priced per seat regardless of how much any individual uses it.

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