Chapter vs PlotLock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chapter
Organize your reading life with this app. Track progress, log updates, and build a personalized library. Set goals, save notes, and share your reading journey with friends.
- Track reading progress
- Log daily updates
- Build a personalized library
- Add custom covers
- Organize by format/status
- Set reading goals
- Save notes and quotes
- Shared readings with friends
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Reading just got a glow-up. Chapter is the app that helps you keep track of everything you’re reading, planning to read, or pretending you’ve read (we won’t tell). Whether you’re devouring fantasy sagas, vibing with romance, or juggling five nonfiction books at once, Chapter keeps your reading life neat, nerdy, and totally you. Track your reading progress, log daily updates, and build a library that actually feels like yours. Add custom covers, organize books by format or status, and keep everything beautifully tidy. Set reading goals, celebrate milestones, and stay motivated whether you’re reading 2 books a year or 200. Save notes, highlight favorite quotes, and remember every moment that made you laugh, cry, or immediately text a friend. Read together with friends using Shared Readings! Start a shared book with up to 7 friends, follow each other’s progress, and stay motivated together chapter by chapter. Leave fun reviews, discover what other readers are loving, and find your next obsession through the community. You can even plan reading sessions, book club meetings, or upcoming releases with built-in events and reminders. Chapter makes reading feel more organized, more fun, and a whole lot more you. Ready to turn the page? Download Chapter and start your next reading adventure today! -------------------- By using Chapter, you accept our Terms of Service and Privacy Policy: TERMS OF SERVICE: https://help.clubchapter.com/en/about/terms/ PRIVACY POLICY: https://help.clubchapter.com/en/about/privacy/
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 Chapter's 3. PlotLock also leads on ads (none vs shown). On price, update cadence, 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
Both are free to download. Chapter sells 3 in-app purchases, starting at $2.99 per month. PlotLock asks for nothing beyond the download.
Chapter ships an update fortnightly, PlotLock every 2 weeks. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.
| Parameter | Chapter | PlotLock |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 110 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | Diego Frias Nerio | Nicholas Figliolia |
In-app purchases
Chapter
- Chapter Premium Monthly$2.991 Month
- Chapter Premium Quarterly14 Days trial$7.993 Months
- Chapter Premium Yearly1 Month trial$24.991 Year
PlotLock
No in-app purchases









