pdfFiller vs PDF Office Pro, Acrobat Expert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
pdfFiller
This app transforms your device into a mobile office for managing PDF documents. Edit, eSign, and fill out forms, then share or export them. It offers secure storage and access to millions of templates, with offline capabilities.
- Edit PDF documents
- Esign and fill out forms
- Share and collaborate on documents
- Securely store unlimited documents
- Access millions of fillable templates
- Work offline
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pdfFiller is a powerful mobile app that transforms your iOS device into a fully equipped office. With an extensive set of features, you can edit, eSign, and manage an unlimited number of PDF documents from anywhere. Try pdfFiller to see how it can revolutionize the way you work. “pdfFiller does more than just bring a few new editing tricks to PDFs. Actually, this PDF app can add extra depth to the way we interact with these popular files.” — CultOfMac.com “The app is easy to use, lets you organize files into folders, and connects to Dropbox, Google Drive, Box, and OneDrive.” — MakeUseOf.com EDIT PDF DOCUMENTS • Easily edit any PDF contract, invoice, or tax form on your mobile device • Highlight content, erase, or blackout sensitive information in the documents • Use various annotation tools to add text, images, dates, check marks, and more ESIGN AND FILL OUT FILLABLE FORMS • Quickly eSign contracts, agreements, and deals with just a few taps • Send an unlimited number of documents for signing • Create your signature or initials by drawing them on your device’s screen SHARE AND EXPORT • Invite others to collaborate by sharing documents by email, link, or text message • Set permissions for the recipients allowing them to view, edit, or sign the document • Print, fax, and save documents as Word, Excel, and PowerPoint files STORE AN UNLIMITED NUMBER OF DOCUMENTS • Protect your documents with the same level of security and encryption used in the banking industry • Keep your documents up-to-date on all your devices and access them from a smartphone, laptop, or tablet • Start working on a document on one device and pick it up on another one using your pdfFiller account FIND FILLABLE TEMPLATES • Search among millions of ready-to-fill templates in our PDF Library • Add templates to your account and use them as many times as you need • Create professional-looking documents using high-quality business and legal templates OFFLINE MODE • Turn on offline mode to work on documents without interruptions • View, edit, and eSign documents even without an internet connection • Sync the changes you made when you’re back online 7-DAY FREE TRIAL • Try out all paid features free for 7 days • Select a plan that best suits your needs • Cancel anytime without any obligations Subscription will be charged to your credit card through your App Store account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Manage your subscription in the Account Settings on the App Store after purchase. Terms of use: https://www.pdffiller.com/en/terms_of_services.htm Privacy policy: https://www.pdffiller.com/mobile/privacy_policy.html We appreciate your feedback, so please email us at support@pdffiller.com
PDF Office Pro, Acrobat Expert
Edit, sign, and organize PDF documents with this comprehensive tool. Features include text and image editing, OCR, real-time collaboration, and unlimited cloud syncing. Convert PDFs to editable Word documents.
- Edit PDF text and images
- Sign PDF forms
- OCR image to text conversion
- Real-time collaborative editing
- Unlimited iCloud syncing
- Convert PDFs to Word (.docx)
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Introducing PDF Office Pro, the best PDF editor and reader! Edit text, images, sign, forms, highlight, OCR image to text, collaborate, use widgets, and much more! PDF Office Pro is a productivity app that offers a feature packed way to work with PDF documents. Using PDF Office Pro, you can edit PDF text, edit PDF Images, draw on PDF docs with Apple Pencil (not required to draw), convert images to text, invite people for real-time collaborative editing, fill PDF forms, sign PDF docs, edit hyperlinks and upload unlimited PDFs on iCloud and access the data from any iOS and Mac device. PDF Office Pro offers all the basic functionalities such as reading, highlight, draw, sign and organize PDF files; and more advanced features like rearranging PDF pages, real-time collaborative editing, online syncing, annotation, and so much more... **PDF Office Pro bundles exciting features** EDIT PDFs Original Text & Images • Edit, add, remove existing word/s or text/s or image/s. Change the font, size, and color, alignment, fill static PDF docs/forms. Save, replace, delete and resize PDF images. Powerful Editing Tool • Beautiful UI to edit text in your PDF documents • Freehand drawing with your finger or Apple Pencil • Add your own text/notes in the existing body • Scan & Fill PDF document/forms • Merge large PDF docs for easy sharing • Insert and Resize photo into PDFs UNLIMITED UPLOADS AND DATA SYNCING • Upload and Sync unlimited number of PDF files on iCloud and access the data from any iOS or Mac device. OCR - Convert Images to Text • Simple convert an image(s) or PDF to text • Next-Gen OCR with amazing accuracy • Processing done on device, 100% private World’s first real-time collaborative PDF editor • Share your doc with friends/co-workers/clients • Create a shared folder by inviting iClouds users for real-time collaborative editing. Get everyone’s feedback in one place. • Start collaborating work and save all data in shared PDF folder Annotate • Annotate word and text with highlights, underlines, handwriting • Add your comments or notes within the PDF file • Use doc sign creator and add your own signatures • Draw and insert different shapes and objects DARK MODE • Enable dark mode feature for long - time reading. Easily adjust the buttons and toolbars according to your convenience. Organize PDFs • Create a folder and organize your documents • Sync iCloud Drive with the app • Browse recently deleted PDFs Unlimited PDF uploads and syncing • Upload unlimited documents on iCloud • Access these documents from your iPhone, iPad, and Mac • Sync data online and never worry about any data loss Copy Pages • Take pages from one PDF and add to another UPGRADE AND GET: Convert PDFs to Word .docx Fully-Editable Files Conversion Includes: • Text Formatting & Attributes • Annotations & Highlights • Drawings • Images • Tables & more. • The conversion is done on our AWS secure server. All files are deleted IMMEDIATELY and just incase, we do many things: 1) We completely erase the data server every 24 hours. 2) No data is saved or tracked. 3) We even change the name of the PDF to gibberish before uploading! Create Custom PDF Forms • Easy 'Start' with templates for common PDF form objects • Add Text Input Boxes • Checkboxes • Radio • Choices • Buttons SMART COMPRESS • Control the resolution of images inside the PDF • Adjust the image quality • Flatten PDFs • Remove all images if you’d like Stamps & Stamps Builder: • Emphasize sections of the PDF • Create your own stamps MORE • Watermarks on All Pages or One Page • Add/Edit Table of Contents for nice organized outlines • Auto-Add Page numbers to your PDF and specify the exact format and location of the numbers • Add a password to exported PDFs for added protection/security
Screenshots
Verdict
The clearest difference is ads: pdfFiller at none against PDF Office Pro, Acrobat Expert's shown. pdfFiller also leads on ratings volume (8.5K vs 52) and chart position (#53 vs unranked). PDF Office Pro, Acrobat Expert's advantage is review sentiment (44% vs 20%). On price, rating, update cadence and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. pdfFiller sells 10 in-app purchases, starting at $19.99 per month and PDF Office Pro, Acrobat Expert sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.4 for pdfFiller against 4.5 for PDF Office Pro, Acrobat Expert. That said, the two scores are not equally well evidenced: pdfFiller has 8.5K ratings behind it against 52, so its average is the more settled of the two. Written reviews are what separate them: 20% of pdfFiller's written reviews are positive against 44% of PDF Office Pro, Acrobat Expert's.
pdfFiller ships an update fortnightly, PDF Office Pro, Acrobat Expert every 3 weeks. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.
| Parameter | pdfFiller | PDF Office Pro, Acrobat Expert |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (8.5K ratings) | 4.5 (52 ratings) — better |
| Positive reviews | 19.9% of reviews | 44.1% of reviews — better |
| Number of ratings | 8.5K — better | 52 |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #53 — better | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 178 MB | 149 MB |
| Age rating | 4+ | 4+ |
| Developer | airSlate, Inc. | Heytopia LLC |
Customer experience
pdfFiller
PDF Office Pro, Acrobat Expert
Bugs and requests
pdfFiller
Reported bugs
4 issues- Text/annotations not saving correctly
- Freezing/crashing issues
- Incompatibility with certain devices
- Login/account issues
Requested features
5 requests- Undo/redo functionality
- Ability to control opacity of annotations
- Better file management options
- Improved mobile experience
- Clearer pricing and subscription details
PDF Office Pro, Acrobat Expert
Not enough reviews yet to summarise bugs or requests.
In-app purchases
pdfFiller
- PDF editor • Basic Monthly$19.991 Month
- PDF editor • Basic Monthly7 Days trial$19.991 Month
- PDF editor • Plus Monthly$29.991 Month
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- PDF editor • Plus Monthly7 Days trial$29.991 Month
- PDF editor • Premium Monthly7 Days trial$39.991 Month
- Premium Monthly$39.991 Month
- PDF editor • Basic Annual7 Days trial$95.991 Year
- PDF editor • Basic Annual$95.991 Year
- PDF editor • Plus Annual7 Days trial$119.991 Year
- PDF editor • Premium Annual7 Days trial$179.991 Year
PDF Office Pro, Acrobat Expert
- Upgrade to MaxFree
- Upgrade to Pro MaxFree
- Upgrade from Max to Pro MaxFree





