Mibrary vs PlotLock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mibrary
Digitize your personal book collection with this app. Catalog books by searching, scanning, or manual entry, and organize them with custom shelves. Track your reading progress and connect with a community of book lovers.
- Catalog books by search, scan, or manual entry
- Organize with custom shelves
- Track reading progress
- Scan book spines for virtual shelf
- Create wishlists
- Connect with readers
- Import from Goodreads
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Mibrary, the home for your reading tracking, book collection, wishlist, TBR, and more! BUILD YOUR LIBRARY Search for a book, scan its ISBN, or add it manually. Keep track of the details that make each copy yours, including its format, condition, rating, spice level, and personal notes. ORGANIZE YOUR SHELVES Sort your books with built-in shelves like To Read, Currently Reading, Read, and Favorites. You can also create custom shelves for anything you like—genres, moods, series, special editions, or whatever makes sense to you. BRING YOUR PHYSICAL SHELVES TO LIFE Use the spine scanner to photograph your books and create a virtual shelf inspired by the one in your home. Capture the details collectors care about, from beautiful spines to sprayed edges. TRACK YOUR READING See what you’re currently reading, log your progress by page, and move finished books to your Read shelf. Everything stays connected to the copy in your collection. KEEP A WISHLIST Save the books and editions you’re looking for. When one finally comes home with you, move it straight into your library. IMPORT FROM GOODREADS Already have years of reading history somewhere else? Import your Goodreads collection and continue from there. CONNECT WITH OTHER READERS Follow friends and fellow book lovers, see what they’re adding and reading, and join the conversation through likes and comments. RATE, REVIEW, AND REMEMBER Give books a star rating and spice level, then add private notes about the moments, characters, and feelings you don’t want to forget. Your library is personal. Mibrary gives it a place to live wherever you go. Terms of Use: https://mibrary.app/terms
PlotLock
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PlotLock is a reading companion for book clubs and reading partners. Add any book, track your progress by page or chapter, and leave margin notes as you read — shared with your group in real time. READ AT YOUR OWN PACE Join a group with a simple code. You see everyone's progress, but notes written past where you are stay locked until you get there. Nobody has to read on a schedule, and nobody gets spoiled. MARGIN NOTES, NOT A CHAT Every note is pinned to a place in the book. Reach that page and it unlocks. It reads like borrowing a copy covered in a friend's handwriting, rather than scrolling a feed. AN ASSISTANT THAT WON'T SPOIL IT Ask about what you've read so far — a character you've lost track of, a thread you want to untangle. The assistant knows exactly how far along you are and will not discuss a single page beyond it. QUIET BY DESIGN No public profiles, no followers, no algorithm, no ads. Just you and the people you're reading with. FEATURES · Track progress by page or chapter · Margin notes that sync live with your group · Spoiler lock on every note and every AI answer · Share a journey with a link · Emoji reactions and threaded replies · Dark mode PlotLock was previously published as SamePage. Same app, same account, same books.
Screenshots
Verdict
The clearest difference is in-app purchases: PlotLock at none against Mibrary's 1. On price, update cadence, 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. Mibrary sells 1 in-app purchase, starting at $2.99 per month. PlotLock asks for nothing beyond the download.
Mibrary ships an update every 9 days, PlotLock every 2 weeks. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.
| Parameter | Mibrary | PlotLock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (204 ratings) — better | — |
| Positive reviews | 87.0% of reviews | — |
| Number of ratings | 204 — better | — |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 95 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | Kory Buck | Nicholas Figliolia |
In-app purchases
Mibrary
- Mibrary Pro7 Days trial$2.991 Month
PlotLock
No in-app purchases









