Let’s discover the best apps to annotate PDFs on iPad with Apple Pencil in 2026. We review top apps that are fast, reliable, and handwriting-ready, focusing on pricing, Apple Pencil support, and workflow fit.
Why the Built-In Tools Aren’t Always Enough
Most of us don’t install a PDF annotation app until we actually need one. Open a PDF in Files, tap the markup icon, grab the Apple Pencil, highlight something, write a note, and move on. For a quick signature or a few highlights, Apple’s built-in tools are honestly good enough.
Things change when that PDF becomes a 300-page contract, a stack of research papers, or a semester’s worth of lecture slides. Scribbling on a page is no longer enough. We want searchable handwriting, better organization, easier note-taking, and an app that doesn’t start struggling when the document gets huge.
That’s what we wanted to find out with this roundup. We tested dedicated PDF annotation apps to see which ones actually feel good with Apple Pencil and which ones are better suited to specific kinds of PDF work.
Our Testing Process for 2026
We took the hands-on route. We installed and tested multiple PDF annotation apps, imported lecture-slide PDFs, wrote over scanned documents, and used Apple Pencil on both an iPad Pro and an iPad mini.
We also pushed some of the apps with genuinely large documents, including a 600+ page e-book. An app can feel perfectly smooth with a 20-page PDF, but that doesn’t tell you much about what happens when you throw hundreds of pages at it.
Beyond our own testing, we looked through discussions from students, researchers, and professionals who use these apps regularly. Subscription complaints, sync reliability, Apple Pencil support, and everyday usability came up often enough that we didn’t want to ignore them.
After weeks of testing and research, we narrowed the list down to Notability, GoodNotes, PDF Expert, LiquidText, and Noteful, while also looking at Apple’s built-in Preview and Files tools.
Why a Dedicated PDF App Is Worth Your Time
Apple’s built-in tools are convenient, but regular PDF annotation quickly exposes the things they don’t do as well.
Apple Pencil Handwriting Has to Feel Right
This was one of the first things we noticed. A PDF app can have an impressive feature list, but if writing feels laggy or palm rejection gets in the way, you probably won’t enjoy using it for long.
All of the apps here support Apple Pencil, but the handwriting experience isn’t identical across them.
Finding Old Notes Matters More Than You Think
It’s surprisingly easy to fill a PDF with notes and then forget where you wrote something important.
That’s why handwriting-to-text conversion, handwriting search, folders, and tags become genuinely useful once you’re dealing with a lot of documents.
Your Workflow Matters
A student marking up lecture slides has very different needs from a researcher pulling information out of academic papers.
We therefore paid attention to things like audio recording, OCR, text extraction, form filling, and large-file performance, rather than simply picking the app with the longest feature list.
Reliability Can Make or Break the Experience
This isn’t the most exciting feature to talk about, but it matters.
A missing pen style is annoying. Losing an hour of annotations because an app crashed is much worse. We also came across user reports of crashes, lost markup, and other reliability problems, so we kept that in mind while comparing the apps.
What Apple Pencil Pro Brings to the Table
If you’re using the newer Apple Pencil Pro, you get a few extra tricks that can make annotation faster.
The squeeze gesture can bring up a tool palette without reaching for the screen. Barrel roll uses the Pencil’s built-in gyroscope to rotate supported pen and brush tools, while haptic feedback gives you a physical response when certain actions register. Find My support is another useful addition if your Pencil has a habit of disappearing.
None of this is required for PDF annotation, though. Standard Apple Pencil models and Apple Pencil (USB-C) work with every app on this list.
What Is the Best App to Annotate PDF on iPad with Apple Pencil?
After spending time with these apps, we found that Notability, GoodNotes, PDF Expert, LiquidText, and Noteful are the main options worth considering in 2026.
What makes this comparison interesting is that they aren’t really trying to solve exactly the same problem. Notability leans into handwriting and audio, GoodNotes tries to be a complete digital notebook, PDF Expert focuses on serious PDF work, LiquidText approaches documents from a research perspective, and Noteful keeps things simple and inexpensive.
Top Apps to Annotate PDFs on iPad with Apple Pencil
Notability – Handwriting and Lecture Notes
Notability was one of the easiest apps to settle into during testing. If your normal PDF workflow is picking up an Apple Pencil and writing all over a document, it feels very natural.
Why Notability Stands Out
The feature that really caught our attention was audio synced to your notes.
You can record a lecture or meeting while writing, and the recording stays connected to your notes. Later, you can tap a note and jump back to what was being said around that point.
Not everyone needs this, but if you’re a student trying to keep up with a fast lecture, it can be genuinely useful.
Features We Appreciated Most
- Fluid, low-latency Apple Pencil handwriting
- Handwriting-to-text conversion
- Audio recording linked to your note timeline
- Rearrangeable text and drawings
What Annoyed Us
The biggest issue is the subscription model. If you mainly want to open PDFs, highlight them, and write notes, paying every year can feel like a lot.
We also found reports from some users about missing newer Apple Pencil features and no fountain-pen option. Google Drive sync exists, although some users have reported friction with newer Pencil hardware.
Who Should Try Notability?
We’d point students and people who take lots of lecture or meeting notes toward Notability, especially if you’ll actually use the audio feature.
Notability is rated 4.8 out of 5 on the App Store from 450,000+ reviews. It’s free to start, with Plus at $19.99/year and Pro at $99.99/year. A one-time $49.99 Classic version is also available. Anyone who purchased before Notability’s November 2021 move to subscriptions retains lifetime access to features available at that time.
Where to Get It: App Store
GoodNotes – The Feature-Rich Digital Notebook
GoodNotes is probably the most familiar name in this category, and after using it, we can understand why it has such a large following.
It isn’t just a PDF annotator. It wants to be your entire digital notebook, with PDFs, handwritten notes, folders, and plenty of customization.
Why GoodNotes Stands Out
The organization tools are where GoodNotes really shines.
If you have dozens of PDFs and handwritten notes and want everything arranged into notebooks and folders, there’s a lot to like.
The flip side is that GoodNotes can sometimes feel like too much app when all you want to do is open a PDF and write on it.
Features We Appreciated Most
- Deep organization with notebooks and folders
- Pen and paper-style customization
- Handwriting-to-text search
What Annoyed Us
The interface can feel overwhelming for casual users, and full functionality requires a subscription.
That’s not necessarily a problem if you use the extra features. It’s harder to justify if your PDF workflow is basically highlight, write, and close.
Who Should Use GoodNotes?
We’d look at GoodNotes if you want PDF annotation and a full digital notebook in the same app.
GoodNotes holds 4.8 stars from 128,000+ App Store reviews. It offers a limited free plan, with Essential at $11.99/year and Pro at $35.99/year. An optional AI Pass costs $9.99/month on either plan.
Recent comparisons have highlighted GoodNotes’ AI features, including math solving and note summarization, while Notability remains particularly focused on lecture and meeting recording.
Where to Get It: App Store
PDF Expert – Serious, High-Volume PDF Work
This is the app we’d keep in mind when the PDF itself becomes the difficult part.
PDF Expert feels much more focused on serious document work than on creating a digital notebook.
Why PDF Expert Stands Out
Large files are where it gets interesting.
We pushed the apps with large documents, including a 600+ page e-book, and this is where PDF Expert stood out.
When you’re dealing with a huge, image-heavy PDF, we’d rather have an app that opens and handles it properly than one with another dozen note-taking extras we may never use.
Features We Appreciated Most
- Strong performance with large, image-heavy PDFs
- Highlights, underlines, callouts, shapes, and stamps
- Built-in form filling and signing
What Annoyed Us
Advanced editing and OCR are behind paid tiers.
It also doesn’t have the same handwriting-focused notebook feel you get from GoodNotes or Notability. That isn’t necessarily a problem—it’s simply a different approach.
Who Should Try PDF Expert?
We’d point professionals, researchers, and anyone regularly working with large PDFs toward PDF Expert.
PDF Expert carries an aggregate rating of around 4.7 out of 5 across independent review platforms. It offers a free basic tier, while Premium costs $79.99/year across iPhone, iPad, and Mac. A $139.99 one-time lifetime option is available for Mac only.
Where to Get It: App Store
LiquidText – Research and Study Workflows
LiquidText is the odd one out here, and that’s actually what makes it interesting.
Instead of treating a PDF as a page you simply write on, LiquidText lets you pull information out of the document and rearrange it.
Why LiquidText Stands Out
The freeform text extraction workflow is what makes this app different.
You can extract text and images and move them around beside the original document. For academic papers, research, and long documents where you’re constantly connecting one section to another, we found this approach much more interesting than traditional highlighting.
Features We Appreciated Most
- Freeform extraction and rearranging of PDF content
- Tools for connecting ideas across long documents
- Apple Pencil-friendly annotation
What Annoyed Us
There’s definitely a learning curve.
If all you want to do is highlight a paragraph and sign a form, LiquidText is probably more app than you need. Its workflow takes some time to understand.
Who Should Try LiquidText?
We’d recommend looking at LiquidText if you’re a researcher, writer, or student working through dense academic papers.
Pricing is layered. There’s a free Basic plan, a Pro one-time purchase of roughly $19.99–$79.99, depending on the platform bundle, and LIVE subscriptions starting around $4.99/month. LIVE Unlimited is around $7.99/month.
The pricing structure can be confusing, so we’d check the current in-app options before committing.
Where to Get It: App Store; also available for Windows.
Noteful – The Budget-Friendly One-Time Purchase
Noteful doesn’t have the same recognition as GoodNotes or Notability, but it has one very easy-to-understand advantage: you pay once.
Why Noteful Stands Out
The one-time lifetime license is the biggest reason this app keeps coming up whenever subscription-based note-taking apps are discussed.
It also combines PDF annotation with regular note-taking and supports iCloud and Google Drive syncing.
Features We Appreciated Most
- One-time purchase instead of a subscription
- PDF annotation combined with general note-taking
- iCloud and Google Drive syncing
What Annoyed Us
The community around Noteful is smaller, so you won’t find the same number of tutorials and discussions as you will for GoodNotes or Notability.
It also doesn’t match the bigger apps feature-for-feature.
Who Should Try Noteful?
If you’re a student or budget-conscious user who simply doesn’t want another subscription, Noteful is worth a look.
Noteful has a 4.7-star rating from 12,000+ App Store reviews. It’s free to try with some limitations, while the full lifetime unlock costs just $4.99 one time.
Where to Get It: App Store
Apple’s Built-In Tools – Free, But Read This First
Before downloading another app, we’d honestly suggest trying what Apple already gives you.
With iPadOS 26, Preview can handle highlighting, shapes, signatures, form filling, and scanning paper documents into searchable PDFs.
For a quick signature or a few highlights, that’s more than enough.
The concern starts when you rely on it for heavier work. Some users have reported crashes during native PDF annotation, including lost markup or documents appearing blank apart from annotations.
Who Should Try It?
If you only annotate PDFs occasionally, Files and Preview are probably all you need.
For important documents, though, we’d still keep backups.
Where to Find It: Preview and Files are built into iPadOS, so there’s nothing to download.
A Few More Worth Mentioning
A few other apps came up often enough in our research to deserve a quick mention.
MarginNote is aimed at research-heavy users working with large PDFs, note-taking, and color inversion. Notestudio is a lighter free option for PDFs, scans, photos, annotation, and export. PDFgear is another straightforward free PDF editor for basic PDF work.
MarginNote 4 has a free reader-only version. Pro costs around $12.99 one time, while Max costs around $51.99 one time and adds Mac support and OCR. An annual Max subscription is also available for ongoing AI features.
Notestudio and PDFgear remain free or largely free, which makes them useful if you only need basic markup.
Where to Get Them: MarginNote 4 · Notestudio · PDFgear
Quick Comparison: Which PDF Annotation App Should You Choose?
After using these apps, the differences become much easier to understand than they look on a feature list.
| App | Best For | Pricing Model | Standout Feature | Main Drawback |
|---|---|---|---|---|
| Notability | Lecture slides, handwriting + audio | Subscription | Audio synced to notes | Ongoing cost |
| GoodNotes | All-around digital notebook | Subscription | Deep organization | Can feel overwhelming |
| PDF Expert | Large, dense PDFs | Freemium/one-time upgrade | Performance on big files | Advanced tools cost extra |
| LiquidText | Research and studying | Freemium | Freeform text extraction | Learning curve |
| Noteful | Budget-conscious users | One-time purchase | No subscription | Smaller feature set |
| Apple Preview/Files | Occasional, light use | Free | Built into iPadOS | Reported crashes/lost notes |
Pricing at a Glance
Price was one of the things we kept coming back to while comparing these apps. Some are inexpensive one-time purchases, while others only make sense if you’re going to use their more advanced features regularly.
| App | Free Version? | Paid Pricing | App Store Rating |
|---|---|---|---|
| Notability | Yes, limited | $19.99/yr Plus; $99.99/yr Pro; $49.99 one-time Classic | 4.8 (450,000+ reviews) |
| GoodNotes | Yes, limited | $11.99/yr Essential; $35.99/yr Pro | 4.8 (128,000+ reviews) |
| PDF Expert | Yes, basic | $79.99/yr; $139.99 lifetime Mac only | ~4.7 aggregate |
| LiquidText | Yes | Pro ~ $19.99–$79.99 one-time; LIVE from ~ $4.99/mo | Varies |
| Noteful | Yes, limited | $4.99 one-time, lifetime | 4.7 (12,000+ reviews) |
| MarginNote 4 | Yes, reader-only | Pro ~ $12.99 one-time; Max ~ $51.99 one-time or annual | Varies |
| Apple Preview/Files | Yes, fully | Free | Built-in |
Pricing can change, so we’d still check the current App Store listing before purchasing.
Frequently Asked Questions About PDF Annotation Apps for iPad
Can I annotate PDFs with Apple Pencil?
Yes. All the apps on this list, along with Apple’s Files and Preview tools, support Apple Pencil and Apple Pencil Pro for writing, highlighting, and drawing directly on PDFs.
How do I annotate a PDF on iPad without a third-party app?
Open the PDF in Files or Preview, tap the markup icon, and use the pen, highlighter, and shape tools. For basic annotation, Apple’s built-in tools work well.
What’s the best free PDF annotation app for iPad?
If you only need basic markup, we’d start with Apple’s own Preview and Files tools. They’re already on the iPad and handle everyday annotation without requiring another app. Notestudio and PDFgear are worth considering if you specifically want a third-party option.
What’s the best PDF app for students on iPad?
If you want handwriting combined with lecture recording, Notability is worth looking at. If avoiding subscriptions matters more, Noteful offers a one-time purchase.
Do I need Apple Pencil Pro specifically for PDF annotation?
No. Standard Apple Pencil models and Apple Pencil (USB-C) work with every app here. Apple Pencil Pro’s squeeze, barrel roll, and haptic feedback are useful extras rather than requirements.
How much does a PDF annotation app for iPad actually cost?
You can spend nothing with Apple’s built-in tools, around $4.99 one time with Noteful, or roughly $80–$100 per year on some feature-heavy subscriptions. Several apps also offer one-time purchase options.
Final Thoughts: Our Review of the Best PDF Annotation Apps for iPad
After spending time with these apps, the biggest thing we noticed is that they’re really built around different types of PDF users.
We’d reach for Notability during lecture-heavy weeks when handwriting and audio matter. GoodNotes is more interesting when we want the iPad to act as a complete digital notebook. When a PDF is hundreds of pages long, PDF Expert is the one we’d keep around for serious document work. For research, LiquidText gives us a workflow that traditional annotators simply don’t.
And then there’s Noteful, which becomes particularly interesting if the idea of paying another annual subscription already annoys you.
For quick annotations, signatures, and occasional PDF work, we wouldn’t bother installing anything extra. Apple’s Preview and Files tools are good enough for that, especially after the iPadOS 26 improvements.
For heavier work, though, a dedicated app can make the iPad feel much more like a proper document workspace. From our experience, the easiest way to choose is to think about what you actually spend your time doing: writing notes, organizing documents, researching, or managing large PDFs.
That’s ultimately what should guide your choice—not simply which app has the longest feature list.
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