PDFast vs Protect PDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDFast
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PDFast — Your All-in-One PDF Toolkit Everything you need to work with PDFs, right in your pocket. POWERFUL TOOLS: • Join PDFs — Merge multiple files into one • Split PDF — Extract specific pages • Compress — Reduce file size instantly Images ↔ PDF — Convert photos to PDF and back • Rotate — Fix page orientation • Protect — Add password encryption • Watermark — Add text watermarks • Scanner — Scan documents with camera • Sign PDF — Add your signature • OCR — Recognize text in scanned documents • PDF → Word — Convert to editable format • Page Numbers — Add numbering to pages • Unlock — Remove password protection • Add Text — Place text anywhere on PDF • PDF Reader — Read and annotate with highlights, drawings, stickers WHY PDFAST? • Works 100% offline — your files never leave your device • Beautiful, intuitive interface • Lightning-fast processing • Supports 10 languages • No subscription — one-time purchase, yours forever Download PDFast and take control of your PDFs today!
Protect PDF
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Protect PDF is a simple PDF security app for locking, unlocking and changing PDF passwords directly on your iPhone. Import a PDF from Files, choose the action you need and export the processed document when you are done. Your files are handled locally on your device, with no account and no upload flow. What you can do: • Protect a PDF with an opening password • Unlock a protected PDF when you know the current password • Change an existing PDF password • Generate a strong password and copy it to the clipboard • Allow or block printing and text copying when protecting a file • Save, share or export the processed PDF • Review your recent processed files in the local history Built for private documents: Protect PDF is designed for invoices, forms, contracts, study notes, work documents and any PDF you want to share more safely. The workflow is intentionally focused: import, choose protect, unlock or change password, then save or share. All PDF tools are available in the app. An optional one-time purchase removes ads. Protect PDF does not replace legal or enterprise document management systems. Always keep your password somewhere safe, because a protected PDF cannot be opened without the correct password.
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Verdict
The clearest difference is price: Protect PDF at Free against PDFast's $3.99. PDFast's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement 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
Protect PDF is free to download; PDFast costs $3.99 up front. Protect PDF sells 1 one-off in-app purchase. PDFast asks for nothing beyond the download.
| Parameter | PDFast | Protect PDF |
|---|---|---|
| Price | $3.99 | Free — better |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 9 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Vladimir Rodzaevskiy | Antonio Gonzalez de la aleja german |
In-app purchases
PDFast
No in-app purchases
Protect PDF
- Remove Ads$2.99









