Comparison

BookyAI vs PDF

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

Head to head
About

BookyAI

Read full description

Fix a typo on an invoice. Change a date on a contract. No computer, no software, no account. EDIT THE TEXT OF A PDF Tap a line, rewrite it. The original font, size and colour are kept — nothing else on the page moves. Almost no app can do this on a phone. SIGN AND ANNOTATE Your signature drawn with a finger, your stamps, text, drawings. Save your signatures and stamps once and they are waiting for you on the next document. SCAN The camera straightens the page by itself. Several pages in a row, colour, grey or black-and-white filters, and you can adjust the edges by hand. COMPRESS A PDF, some photos or a video, in three plain choices. The final size is written on every choice before you decide, and when a file cannot be made smaller, the app says so instead of making you wait. CONVERT Word to PDF, PDF to images, images to PDF. BLANK PAGE A real Word editor: headings, bold, colours, lists, and templates ready to write in — letter, note, invoice, report. CV AND COVER LETTER WRITTEN BY AI Answer a few questions and the AI writes. Professional templates, export to PDF or Word. NO SUBSCRIPTION The PDF tools, scanning, compression and signing are free and unlimited. The rest runs on credits: 1 credit = 1 document. You pay once for a document, then you export it as many times as you like, even after correcting it again. Credits never expire. NO ACCOUNT No sign-up. The PDF tools, scanning and compression work on your phone. Only the CV and the cover letter go through our server, for as long as it takes to write them. BookyAI speaks 17 languages.

About

PDF

Features
Read full description

Scan, edit, sign and OCR PDFs on your iPhone. Your files never leave the device. PDF-PRO is a private, offline PDF editor and scanner for contracts, invoices, receipts and everyday documents. Read, scan and annotate for free. Upgrade to Pro for unlimited merge, split, compress, OCR, signatures, watermarks and password protection — the yearly plan includes a 3-day free trial. WHY PEOPLE SWITCH • Sign a contract without printing it • Scan paper and photos into a clean PDF • Merge, split or reorder pages before you send • Compress a large file so it fits in email or chat • Extract text with on-device OCR • Lock a PDF with a password, or add a watermark READ & ANNOTATE • Smooth reader with continuous scroll, pinch-to-zoom and single-page mode • Highlight, underline, strikeout, freehand ink and text notes • Search inside the document and jump to a page SCAN & CONVERT • Camera scan for paper documents, invoices and receipts • Photos to A4 PDF, or export pages as images ORGANIZE • Merge PDFs, split by page range, drag to reorder, rotate or delete pages • Folders, favorites and search in your on-device library OCR • Recognize text on the current page or the whole file • Copy or share the result — processed on your iPhone, not a server SIGN & PROTECT • Handwritten signature stamp you can place and resize • PDF password and a diagonal copyright watermark PRIVACY Every merge, split, compress, OCR and encrypt step runs locally. No account. No cloud upload. FREE vs PRO Free: read, scan and basic annotation. Pro: unlimited signature, OCR, compress, password, watermark, merge and split. • Yearly — best value, 3-day free trial • Monthly — month to month • Lifetime — pay once Subscriptions renew unless you cancel at least 24 hours before the period ends. Manage in Apple ID settings. Terms of Service (Apple EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BookyAI4 screens
PDF4 screens

Verdict

The call

The clearest difference is update cadence: BookyAI at weekly against PDF's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. BookyAI sells 3 one-off in-app purchases and PDF sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BookyAI ships an update weekly, PDF every 3 weeks. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard1 real difference Ā· 5 level
BookyAI versus PDF: the parameters behind the verdict, then further details
ParameterBookyAIPDF
PriceFreeFree
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size11 MB12 MB
Age rating12+17+
DeveloperDIGITAL APPēˆ±åŽ 刘

In-app purchases

3 purchases

BookyAI

One-time3
  • 5 Credits Pack$1.99
  • 15 Credits Pack$4.99
  • 50 Credits Pack$9.99
3 purchases

PDF

Subscriptions2
  • PDF-PRO Monthly$3.991 Month
  • PDF-PRO Yearly (3-Day Trial)3 Days trial$24.991 Year
One-time1
  • PDF-PRO Lifetime Pass$59.99

Questions

Is BookyAI free?
BookyAI is free to download, with in-app purchases available.
Is PDF free?
PDF is free to download, with in-app purchases available.
Do BookyAI or PDF have ads?
Neither BookyAI nor PDF shows ads.
Which is updated more often, BookyAI or PDF?
BookyAI ships an update weekly, and PDF every 3 weeks. Most recently, BookyAI was updated on October 28, 2026 and PDF on October 31, 2026.

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