Comparison

PDF Notes Pro vs AI Keyboard

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PDF Notes Pro

Transform your iOS device into a digital notebook for annotating and managing PDF documents. Easily add handwritten notes, highlights, and drawings directly onto PDFs, and organize your files with a built-in management system. Share, print, and search your documents and notes with ease.

Highlights
  • Handwritten notes with audio recording
  • PDF annotation (highlight, underline, strikeout)
  • Freehand drawing and signing
  • Full-text search within PDFs and notes
  • Built-in file management
  • PDF sharing and printing
Features
Read full description

PdfNotes Pro is a notes-taking iOS universal app which provides the capability to make notes on PDF documents. It gives you the ability to take notes by handwriting and make your iOS device a magic notebook. It also enable you to read, annotate, print, manage, and share your notes and PDF files. Using PDF Notes Pro, it is simple to take notes and browse notes, sign a PDF document, annotate PDF documents, add bookmarks, highlight text, search text over all the pages, draw anything with a touch pen or just your finger. PdfNotes Pro has a simple but powerful built-in file management system, so it is very easy to import notes and PDF files into PDF Notes Pro or export them from PDF Notes Pro. Features: 1. Take handwriting notes 1) You can take handwriting notes directly on your iOS device with finger or stylus. 2) You can record audio while you are taking notes by handwriting. 3) The audio recorded is stored together with your handwriting notes so you can review your notes later against the audio. 4) You can zoom in to make more room for your handwriting. 5) You can erase any handwriting notes with the Eraser tool. 6) You can change color or line width of your handwriting. 7) Paper-like smooth and comfortable experience and process of notes-taking. 8) You can add handwriting notes into a PDF document. 9) You can access handwriting notes directly from a PDF document. 10) You can print handwriting notes onto paper via AirPlay-compatible printers. 11) You can turn handwriting notes into a PDF document. 12) Free style drawing 2. Annotate PDF documents 1) Write down notes on your PDF documents and browse them later. 2) Highlight text with different colors, and link text notes with it. 3) Underline text with different colors, and link text notes with it. 4) Squiggly text with different colors, and link text notes with it. 5) Strikeout text with different colors, and link text notes with it. 6) Add sticky notes. 7) Draw anything with a touch pen or just your finger, and link text notes with it. 8) Sign PDF documents. 9) Add bookmarks to remember the important pages. 10) Powerful full text search for your notes on the PDF document. 3. Read PDF Documents 1) Browse a PDF Document using its outlines and bookmarks. 2) Browse a PDF Document using its links. 3) Powerful but simple to use full text search helps you find any text in your PDF document quickly and easily. 4) Browse a PDF Document using the notes you have taken. 5) Open password-protected PDF documents with a valid password. 6) Browse a PDF Document using thumbnail view. 4. PDF document sharing 1) Open PDF files directly from your email. 2) Send out PDF documents by email. 3) Print PDF document with your notes via AirPrint. 4) Print PDF document without your notes via AirPrint. 5) Open PDF files directly from any other apps which provide the ability to open a PDF file in another app. 6) Provide the ability to open a PDF file in another app. 7) Download from Dropbox or upload into Dropbox. 8) Download from GoogleDrive or upload into GoogleDrive. 9) Download from Sky Drive or upload into Sky Drive. 10) Download from Box or upload into Box. 11) Send and receive PDF files via AirDrop from iOS Device nearby made in 2013 or later. 5. File Management 1) Create folder or delete folder. 2) Copy, move, and delete a PDF or notes file. 3) Rename a folder. 4) Rename a notes or PDF file. 5) Display number of files in a folder. 6) Display file size and last modified date for a file. 7) Display statistics of a notes or PDF document, such as last open time, current page, etc. 8) Provide unlimited depth for folders(you can create subfolder of unlimited sub level).

About

AI Keyboard

Enhance your typing experience with an AI-powered keyboard that offers real-time grammar and spelling checks, one-tap rewriting, and instant translation in over 100 languages. Customize your keyboard and choose from various tone themes to communicate more effectively across all your apps.

Highlights
  • Instant grammar and spelling checker
  • One-tap rewrite and paraphrase
  • Multiple tone themes
  • Instant translation (100+ languages)
  • GPT chat built-in
  • Predictive text and smart suggestions
  • Works in every app
Features
Read full description

AnyWrite makes writing and replying across your social apps a breeze. Send smarter replies in WhatsApp and Messenger, fine-tune your posts on X, and polish Instagram captions—without switching apps. Our ChatGPT-powered AI keyboard and writing assistant helps you write faster and sound polished everywhere you type. Key Features • Instant Grammar & Spelling Checker — real-time proofreading that fixes mistakes, punctuation, and style as you type. • One-Tap Rewrite & Paraphrase — turn rough notes into clear, professional text; rephrase sentences or rewrite paragraphs in seconds. • Tone Themes — switch between casual, formal, concise, witty, or academic to match your voice. • Instant Translate (100+ languages) — remove language barriers with a built-in translator for texts and messages. • GPT Chat Built-In — ask for facts, ideas, outlines, or quick replies directly from the keyboard. • Predictive Text & Smart Suggestions — next-word predictions and autocomplete for faster, more accurate typing. • Customizable Keyboard & Themes — personalize layout, shortcuts, and looks to fit your workflow. • Works in Every App — iMessage, Mail, WhatsApp, Instagram, Notes, and more. How it works Type your text → tap Rewrite / Translate / Grammar / Tone → pick a suggestion → send. No copy-paste. Just smoother typing, better writing, and clear communication. Download AnyWrite today—the smartest AI keyboard, complete grammar checker, spellcheck, rewrite/paraphrase, and translation toolkit for iPhone and iPad. Write faster, clearer, and more confidently wherever you type.

Screenshots

PDF Notes Pro4 screens
AI Keyboard4 screens

Verdict

The call

The clearest difference is review sentiment: AI Keyboard at 88% against PDF Notes Pro's 13%. AI Keyboard also leads on price (Free vs $4.99) and rating (4.8 vs 1.7). PDF Notes Pro's advantage is in-app purchases (none vs 16) and update cadence (every 3 weeks vs every 2 months). On ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

AI Keyboard is free to download; PDF Notes Pro costs $4.99 up front. AI Keyboard sells 11 in-app purchases, starting at $2.99 per 7 days. PDF Notes Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

AI Keyboard holds the better App Store score, 4.8 against 1.7. That said, the two scores are not equally well evidenced: AI Keyboard has 240 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 13% of PDF Notes Pro's written reviews are positive against 88% of AI Keyboard's.

UpkeepUpdate frequency

PDF Notes Pro ships an update every 3 weeks, AI Keyboard every 2 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

Scorecard8 real differences · 2 level
PDF Notes Pro versus AI Keyboard: the parameters behind the verdict, then further details
ParameterPDF Notes ProAI Keyboard
Price$4.99Free — better
Rating1.7 (6 ratings)4.8 (240 ratings) — better
Positive reviews12.5% of reviews88.2% of reviews — better
Number of ratings6240 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size40 MB134 MB
Age rating4+12+
DeveloperUMateYAppnest Technologies

Customer experience

PDF Notes Pro

All ratings6 ratings
Positive16.7%
Neutral0.0%
Negative83.3%
Written reviews8 reviews
Positive12.5%
Neutral0.0%
Negative87.5%

AI Keyboard

All ratings240 ratings
Positive94.2%
Neutral2.9%
Negative2.9%
Written reviews102 reviews
Positive88.2%
Neutral6.9%
Negative4.9%

Bugs and requests

PDF Notes Pro

Not enough reviews yet to summarise bugs or requests.

AI Keyboard

Reported bugs

8 issues
  • Keyboard sometimes disappears
  • App sometimes doesn't show keyboard
  • Typing can be a jumbled mess
  • Glitches
  • No more glitches please
Show 3 more
  • Keyboard sometimes mi
  • Keyboard sometimes no
  • Update stopped word preview support

Requested features

16 requests
  • Update the app
  • Fix paragraph rewriting
  • Chinese language for translation
  • Better integration for computer desktops
  • Translate back from foreign language responses
Show 11 more
  • MacBook keyboard settings guidance
  • Monthly version
  • One-time lifetime payment
  • More uses for tone changer
  • Daily use allowance
  • Dark mode
  • Updated design to match iOS aesthetic
  • More rounded design
  • Vibrant color themes
  • Free grammar correction
  • Sound and tone feature

In-app purchases

None

PDF Notes Pro

No in-app purchases

11 purchases

AI Keyboard

Subscriptions8
  • AnyWrite Weekly Premium$2.997 Days
  • AnyWrite Weekly Premium3 Days trial2 variants$4.997 Days
  • AnyWrite Weekly Premium$4.997 Days
Show 5 more
  • AnyWrite Monthly Premium3 Days trial2 variants$14.991 Month
  • AnyWrite Annual Premium2 variants$39.991 Year
  • AnyWrite Annual Premium3 Days trial$39.991 Year
  • AnyWrite Annual Premium$49.991 Year
  • AnyWrite Annual Premium7 Days trial2 variants$69.991 Year
One-time3
  • AnyWrite Premium Lifetime$29.99
  • AnyWrite Lifetime Access$100.00
  • AnyWrite Lifetime Access$249.99

Questions

Is PDF Notes Pro free?
PDF Notes Pro costs $4.99, with no in-app purchases.
Is AI Keyboard free?
AI Keyboard is free to download, with in-app purchases available.
Which has better reviews, PDF Notes Pro or AI Keyboard?
AI Keyboard is rated higher. PDF Notes Pro averages 1.7 out of 5 from 6 ratings, while AI Keyboard averages 4.8 from 240 ratings.
Do PDF Notes Pro or AI Keyboard have ads?
Neither PDF Notes Pro nor AI Keyboard shows ads.
Which is updated more often, PDF Notes Pro or AI Keyboard?
PDF Notes Pro ships an update every 3 weeks, and AI Keyboard every 2 months. Most recently, PDF Notes Pro was updated on October 16, 2026 and AI Keyboard on October 14, 2026.

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