Booki AI vs SpoilThePlot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Booki AI
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The Ultimate AI Book Companion: Upload, Listen, and Achieve. Stop just "reading" and start experiencing your library. Whether it’s a PDF for work or an ePub for pleasure, Booki AI uses advanced Neural Text-to-Speech (TTS) to turn any file into a premium listening experience. -- KEY FEATURES -- FILE TO AUDIO: Seamlessly upload PDFs, ePubs, or text files. Our engine handles the layout so you can enjoy the story. NEURAL AI VOICES: Forget robotic speech. Choose from ultra-premium "Liquid Glass" voices that sound indistinguishable from human narrators. CUSTOMIZABLE PACE: Fine-tune your listening speed from 0.5x to 3.0x without losing pitch clarity. READING JOURNEY & GOALS: Set daily reading targets in your Profile. Track your progress with real-time data visualization and "Liquid Glass" milestones. INTUITIVE INTERFACE: A design that disappears. Focused reading pages, easy chapter navigation, and a modern "Story Map" layout. -- WHY Booki AI? -- In 2026, time is your most valuable asset. Booki AI lets you "read" while you commute, exercise, or rest your eyes. It isn’t just an app; it’s a productivity powerhouse designed for the modern intellectual. Download Booki AI now and unlock your library's true potential.
SpoilThePlot
Explore books, themes, series, and upcoming releases without revealing plot twists. This app allows you to discover new thrillers while keeping spoilers optional and track your reading progress with personalized lists.
- Discover new thrillers
- Optional spoiler control
- Browse themes and tropes
- Follow series in reading order
- Track reading lists
- Upcoming release notifications
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Discover your next thriller without ruining the surprise. SpoilThePlot helps readers explore books, themes, series, and upcoming releases while keeping spoilers completely optional. DISCOVER THRILLERS Browse the latest additions, search the full library, and explore popular thriller themes, tropes, and settings. Follow series in reading order and keep up with upcoming releases. SPOILER-SAFE BOOK PAGES Every book page lets you explore covers, descriptions, themes, and key details without accidentally revealing major plot points. Spoilers stay hidden until you decide to view them. TRACK YOUR READING Create your own reading lists, keep track of books you’ve finished, and use author checklists to see what you’ve read and what’s next. FRESH SPOILS Receive optional notifications whenever new books are added to SpoilThePlot, so there’s always another thriller waiting to discover. SUPPORT SPOILTHEPLOT If you’d like to help support the site, you can leave an optional tip to help cover hosting and ongoing development. Tips are completely voluntary and don’t unlock additional features. Sign in with your email using a secure magic link. Available on iPhone and iPad.
Screenshots
Verdict
The clearest difference is in-app purchases: Booki AI at none against SpoilThePlot's 4. Booki AI also leads on update cadence (every 4 days vs every 2 weeks). On price, 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
Both are free to download. SpoilThePlot sells 4 one-off in-app purchases. Booki AI asks for nothing beyond the download.
Booki AI ships an update every 4 days, SpoilThePlot every 2 weeks. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.
| Parameter | Booki AI | SpoilThePlot |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 6 MB |
| Age rating | 4+ | 17+ |
| Developer | Noah M | SpoilThePlot |
In-app purchases
Booki AI
No in-app purchases
SpoilThePlot
- Optional Tip$0.99
- Optional Tip$2.99
- Optional Tip$4.99
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- Optional Tip$9.99








