PDF Expert

An app that lets you read, sign and edit PDFs on iPhone and iPad.

Notes & workPDF toolsFree planFree trial+1 more

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What PDF Expert does

PDF Expert is a PDF app for iPhone, iPad and Mac from Readdle. The free version reads, annotates, fills in forms and signs. Premium adds editing text and images, converting PDFs to Office files and images, merging, compressing and AI summaries. There's a Mac version too.

Read, annotate and highlight PDFs

Fill in forms and sign for free

Premium: edit text and images

Premium: convert to Word, Excel, PowerPoint, JPG, PNG or TXT

Premium: merge and compress PDFs

A plan option that covers Mac as well as iPhone and iPad

PDF Expert is built for Apple devices and it shows. Reading is smooth, and you can highlight, add notes and draw on pages. Filling in forms and signing documents are free.

Premium is where the editing lives. You can change text and images in a PDF, create and convert files, export to Word, Excel, PowerPoint, JPG, PNG or TXT, merge documents, compress big files and get AI summaries. The App Store lists Premium at $49.99 with a free trial, and a separate Mac and iOS plan at $79.99, so check which plan covers the devices you use.

If you only sign and annotate, stay on the free version. If you edit PDFs every week, especially across iPad and Mac, Premium is worth comparing with Acrobat.

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Who it's for

iPad and Mac owners who edit PDFs often

Students and professionals who annotate a lot

Skip it if: Android owners.

Pricing

Free plan

Free, with paid extras

Reading, annotating, filling and signing are free. Premium is listed in the App Store at $49.99 with a free trial, and a plan covering Mac and iOS is listed at $79.99. An education plan is listed at $39.99.

Prices can vary by country. Checked 17 Oct 2026.

What people like

Free reading, annotating, filling and signing
Clean, fast app on iPad
Compress and merge with Premium
A plan option also covers the Mac app

Watch out for

Editing and conversion need Premium
The store listing doesn't show the billing period
Pricey if you only edit now and then

Want a PDF tool with only the buttons you use? Build your own.

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Questions people ask

Is PDF Expert free?

Partly. Reading, annotating, filling forms and signing are free. Editing, converting, merging and compressing need Premium.

Can PDF Expert compress a PDF?

Yes. Compressing PDFs is a Premium feature.

Does PDF Expert work on Mac?

Yes. There's a Mac version, and the App Store lists a plan that covers both Mac and iOS.