Shelfmate vs Marcus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shelfmate
Organize your personal library, track reading progress, and receive personalized book suggestions. This app prioritizes user privacy with secure iCloud storage and no analytics.
- Organize physical, eBook, and audiobook libraries
- Track reading progress
- AI-powered book recommendations
- Goodreads import
- Privacy-first data storage
- iCloud synchronization
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Track your books and discover your next favorite read. Shelfmate is the ultimate companion for book lovers. Keep your library organized, track your reading progress and uncover tailored book recommendations. Why Shelfmate? • Privacy first: Your data stays yours, stored securely on iCloud with absolutely no analytics or tracking. • Smart recommendations (Alpha): Powered by advanced AI, discover books you’ll love based on your reading history and preferences. Fine-tune recommendations for a personal touch. • Effortless Organization: Manage physical books, eBooks, and audiobooks in your digital bookshelf. • Goodreads import: Already have a Goodreads library? You can import it and continue where you left off Download Shelfmate and elevate your reading journey today!
Marcus
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Reading, without the friction. Marcus is the reading app made for restless minds. A calm tracker glides along the line to keep your eyes exactly where you are, so your attention stops slipping off the page. Import any EPUB or PDF and just read. WHY IT STICKS - Stay on the line - a gentle tracker keeps your place, at your pace - Stuck? Just ask - explain, summarize or recap without leaving the page - Every book, one tap away - import EPUB & PDF and pick up where you left off - Reading that rewards you - daily goals, streaks and achievements - A shelf that fills as you read - finished books become spines on your bookcase - Your thoughts, in one place - a notebook and a glossary of words you've learned - Share the lines you love - turn any quote into a beautiful card MADE FOR HOW YOUR BRAIN READS ADHD-first and dyslexia-friendly: the OpenDyslexic font, calm themes, read-along audio, and short daily goals that make five minutes count. No guilt, no noise - just no zero days. MARCUS PRO Unlimited explanations, summaries and recaps, all themes and the OpenDyslexic font, and advanced tracker styles. Read more. Struggle less. Start your first page today. Terms of Use: https://marcus.vuvee.me/terms Privacy Policy: https://marcus.vuvee.me/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Shelfmate at none against Marcus's 2. Shelfmate also leads on update cadence (every 3 weeks vs every 2 months). Marcus's advantage is iOS requirement (16.4 vs 18.1). On price, 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
Both are free to download. Marcus sells 2 in-app purchases, starting at $6.99 per month. Shelfmate asks for nothing beyond the download.
Shelfmate ships an update every 3 weeks, Marcus every 2 months. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.
| Parameter | Shelfmate | Marcus |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.1 | 16.4 — better |
| Further details — not scored | ||
| Size | 3 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Mario Mouris | Vukasin Rancic |
In-app purchases
Shelfmate
No in-app purchases
Marcus
- Marcus Pro Monthly$6.991 Month
- Marcus Pro Annual$49.991 Year
