PDF Reader vs Quill
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Reader
This app helps you track your reading progress for PDF documents. It allows you to sync your PDFs and reading status across multiple devices for a seamless experience. Customize your reading environment for optimal comfort.
- Track reading progress
- Sync PDFs and progress across devices
- Configurable reading experience
- Document reader functionality
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Track your reading progress of your PDFs. Sync the pdfs and your progress between devices. Configurable reading experience. EULA: http://www.apple.com/legal/itunes/appstore/dev/stdeula Privacy: https://privacy.logicalmagic.tech/
Quill
This application enhances your reading experience by providing AI-powered definitions, translations, and contextual explanations for any word or passage within your imported EPUB and PDF books. It offers instant insights to deepen comprehension.
- AI-powered explanations
- Instant definitions
- Contextual understanding
- Import EPUB and PDF
- Word and passage lookup
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Quill is an ebook reader with built-in AI that helps you understand what you read. Import your EPUB and PDF books, then tap any word or passage to get instant definitions, translations, and contextual explanations
Screenshots
Verdict
The clearest difference is in-app purchases: Quill at none against PDF Reader's 3. Quill also leads on ads (none vs shown) and update cadence (every 9 days vs monthly). PDF Reader's advantage is device support (3 vs 1). On price, rating, ratings volume 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
Both are free to download. PDF Reader sells 3 in-app purchases, starting at $2.99 per month. Quill asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for PDF Reader against 5.0 for Quill. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
PDF Reader ships an update monthly, Quill every 9 days. The most recent releases landed on October 15, 2026 and October 23, 2026 respectively.
| Parameter | PDF Reader | Quill |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Monthly | Every 9 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 18.2 | 17.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Logical Magic Inc | 思涵 岳 |
Customer experience
PDF Reader
Quill
In-app purchases
PDF Reader
- Pro Monthly$2.991 Month
- Pro Yearly$24.991 Year
- Lifetime Pro$49.99
Quill
No in-app purchases
