Is Sejda or Things 3 better?

Neither clearly leads. Sejda starts at Free and Things 3 at $9.99/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Sejda or Things 3?

Sejda has a free tier; the other does not. Paid plans start at Free for Sejda and $9.99/one-time for Things 3.

Does Sejda or Things 3 run on more platforms?

Sejda runs on Web. Things 3 runs on macOS, iOS, iPadOS, watchOS, visionOS.

Can I use Sejda for free?

Yes. Sejda has a free tier, so you can try it without paying. Things 3 starts at $9.99/one-time.

What is Sejda best used for?

Sejda is most often used for combining multiple pdfs into single files and reordering pages, converting pdfs to excel, word, powerpoint for data extraction, filling and signing pdf forms with digital signatures and validation, extracting text from scanned documents through ocr processing. Of those, combining multiple pdfs into single files and reordering pages and converting pdfs to excel, word, powerpoint for data extraction are not what Things 3 is typically brought in for.

What can Sejda do that Things 3 cannot?

Things 3 covers Today view, Projects and areas, Quick entry, Tags.

Productivity · head to head

Sejda vs Things 3

Sejda

Productivity

Browser based access to all PDF tools

From: Free
Rated: -

Full review Website

Things 3

Productivity

The award-winning personal task manager

From: $9.99/one-time
Rated: -

Full review Website

The short version

Only Sejda has a free tier, so it costs nothing to try first.
Each has a real cost: Sejda free tier is restricted by page and hourly limits and limited file uploads; Things 3 no team collaboration, task sharing, or task assignment features
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Sejda and Things 3 actually diverge.

Attributes where Sejda and Things 3 differ
Attribute	Sejda	Things 3
Starting price	Free	$9.99/one-time
Pricing model	freemium	Unknown
Free tier	Yes	No
Platforms	Web	macOS, iOS, iPadOS, watchOS, visionOS
Founded	Unknown	2004

Identical on both: 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 Sejda

Nothing recorded that Things 3 does not also cover.

Only in Things 3

Today view
Projects and areas
Quick entry
Tags
Calendar integration
Apple Calendar
Siri
Shortcuts

What people use each for

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

Sejda

Combining multiple PDFs into single files and reordering pagesnot Things 3
Converting PDFs to Excel, Word, PowerPoint for data extractionnot Things 3
Filling and signing PDF forms with digital signatures and validationnot Things 3
Extracting text from scanned documents through OCR processingnot Things 3
Batch automating repetitive PDF tasks across hundreds of documentsnot Things 3

Things 3

Schedulingnot Sejda
Appointment bookingnot Sejda
Time trackingnot Sejda
Resource managementnot Sejda
Team coordinationnot Sejda

Where each one falls short

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

Sejda

Free tier is restricted by page and hourly limits and limited file uploads
OCR is capped at 100 pages even on paid plans
File uploads are capped at 500MB per file on paid plans
The 30 percent annual discount requires paying for a year upfront rather than monthly

Things 3

No team collaboration, task sharing, or task assignment features
Apple ecosystem only, with no Windows, Android, or web version
No third-party app integrations beyond Apple's ecosystem
Cannot attach files or images to tasks, only text notes
No time blocking or calendar integration for scheduling tasks into specific time slots

Pricing, plan by plan

Sejda

Free

FreeFree
- Permanently available with no signup required
- Page/hourly limits applied
- Restricted file uploads
Web Week Pass$5/week
- Browser-based tools only
- Single user, 7-day access
Web Monthly$7.5/month
- Browser access to all PDF tools
- Recurring monthly billing
Desktop+Web Annual$63/year
- Both desktop application and web access
- Unlimited documents and no page limits
- Process multiple files simultaneously

Things 3

$9.99/one-time

iPhone/Watch$9.99/one-time
iPad$19.99/one-time
Mac$49.99/one-time

Which should you pick?

Choose Sejda if

You want to start without paying.

Sejda review

Choose Things 3 if

You need today view.
You work on macOS, iOS, iPadOS, watchOS, visionOS.
You also want projects and areas.

Things 3 review

Questions people ask

Is Sejda or Things 3 better?: Neither clearly leads. Sejda starts at Free and Things 3 at $9.99/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Sejda or Things 3?: Sejda has a free tier; the other does not. Paid plans start at Free for Sejda and $9.99/one-time for Things 3.
Does Sejda or Things 3 run on more platforms?: Sejda runs on Web. Things 3 runs on macOS, iOS, iPadOS, watchOS, visionOS.
Can I use Sejda for free?: Yes. Sejda has a free tier, so you can try it without paying. Things 3 starts at $9.99/one-time.
What is Sejda best used for?: Sejda is most often used for combining multiple pdfs into single files and reordering pages, converting pdfs to excel, word, powerpoint for data extraction, filling and signing pdf forms with digital signatures and validation, extracting text from scanned documents through ocr processing. Of those, combining multiple pdfs into single files and reordering pages and converting pdfs to excel, word, powerpoint for data extraction are not what Things 3 is typically brought in for.
What can Sejda do that Things 3 cannot?: Things 3 covers Today view, Projects and areas, Quick entry, Tags.

Answered from the vendors’ own pages

Sejda: How much does Sejda cost?

Sejda offers a free tier (no signup required), a Web Week Pass at $5 for 7 days, Web Monthly at $7.50/month, and Desktop+Web Annual at $63/year (30% savings versus monthly pricing).

Source

Things 3: Does Things 3 support team collaboration?

No. Things 3 is designed for individual use only with no task sharing, team workspaces, task assignment, or commenting features.

Source

Sejda: Does Sejda offer volume discounts?

Yes, teams receive progressive discounts: 10% for 2-4 users, 20% for 5-24 users, 40% for 25-49 users, and 60% for 50+ users.

Source

Things 3: What platforms does Things 3 run on?

Things 3 is exclusive to Apple devices: macOS, iOS, iPadOS, watchOS, and visionOS. There is no Windows, Android, or web version.

Source

Sejda: What are the limitations of Sejda's free plan?

The free plan includes page/hourly limits and restricted file uploads. Paid subscriptions unlock unlimited documents, no page or hourly limits, simultaneous multi-file processing, extended task duration up to 21 minutes, and large file uploads up to 500MB.

Source

Things 3: How much does Things 3 cost?

Things 3 uses a one-time purchase model: $9.99 for iPhone/Watch, $19.99 for iPad, and $49.99 for Mac. Total cost for all platforms is approximately $80 with no subscription required.

Source

Things 3: Does Things 3 sync across devices?

Yes. Things Cloud keeps your to-dos in sync across all your Apple devices automatically. There is no extra cost for cloud synchronization.

Source

Things 3: Can you attach files or images to tasks in Things 3?

No. Things 3 does not support attachments. You can only add notes (text) to tasks.

Source

Sejda vs Things 3

Sejda

Things 3

The short version

Where they differ

What each one covers

Only in Sejda

Only in Things 3

What people use each for

Sejda

Things 3

Where each one falls short

Sejda

Things 3

Pricing, plan by plan

Sejda

Things 3

Which should you pick?

Choose Sejda if

Choose Things 3 if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Sejda

More on Things 3

Keep looking

Other head to heads