Throughline Speed Reader vs Vesper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Throughline Speed Reader
Enhance your reading speed and comprehension with intelligent pacing that adapts to natural language rhythms. This app presents text one word at a time, optimizing focus and reducing eye movement for a more efficient reading experience. It also offers AI-powered summaries and seamless integration across Apple devices.
- Adaptive word-by-word pacing
- Optimal Recognition Point (ORP) alignment
- AI-generated summaries with key takeaways
- Safari extension for saving articles
- Apple Watch app for reading on the go
- Detailed reading analytics dashboard
- Customizable fonts and interface
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Read articles and short documents on your iPhone or iPad. Throughline displays text one word at a time at a fixed focus point. Choose your speed, pause to browse nearby paragraphs, and resume where you stopped. Share web articles from Safari, paste copied text, or import TXT, PDF and DOCX files. Save reading items to your library and read saved text offline. The free reader includes a library of up to 10 items. Throughline Pro adds an unlimited library, advanced pacing controls, the Safari extension, reading analytics and Apple Watch reading. Pro also offers on-device summaries when Apple Intelligence is available for your device and language. The app interface is currently in English. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Vesper
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A calm, focused place to read your own EPUB and PDF books and keep a private journal of everything you read. Load your library, open a book, and the reader gets out of the way. Tap once to hide every chrome element so it's just you and the page. Highlights you save show up in a Quote of the Day widget on your Home Screen, so the lines that mattered come back to find you later. A reading buddy lives inside the book. Tap the chat button on any page and ask about what you're looking at — a phrase, a character, the historical moment, your own half-formed thought. A short answer appears beside the page. Useful for catching a reference, asking a question, working through a passage out loud, or when a scene just wants to be talked about. The journal half of the app tracks what you're reading, what you've finished, and what's still waiting. Build custom views with filters and sorts — Currently Reading, Finished This Year, By Genre, by anything you care about. Tag books with genres and subgenres, add notes, set reading status. It's a bookshelf you actually use. Features: • Read EPUB and PDF files from your library, iCloud Drive, Files, or anywhere on your device • Ask AI about the page you're on, without leaving the book • Save highlights and revisit them via the Home Screen widget • Track reading status, finish dates, genres, and notes per book • Build custom filtered views of your library • Multiple typefaces, adjustable size, and full theme control • Automatic Day/Night theme that follows local sunset • Private iCloud sync across iPhone and iPad — your data, your account • Designed for both phone and iPad Bring your own EPUBs and PDFs. Read at your pace. Keep the record. Terms of service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Vesper at 17.5 against Throughline Speed Reader's 26.0. On price, ads, in-app purchases 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. Throughline Speed Reader sells 3 in-app purchases, starting at $1.99 per month and Vesper sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Throughline Speed Reader | Vesper |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 6 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 26.0 | 17.5 — better |
| Further details — not scored | ||
| Size | 18 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Steven Townsend | S Tan |
In-app purchases
Throughline Speed Reader
- Throughline Pro - Monthly$1.991 Month
- Throughline Pro - Annual$12.991 Year
- Throughline Pro - Lifetime$29.99
Vesper
- Vesper Premium Monthly$2.991 Month
- Vesper Premium Yearly$24.991 Year
- Book Library Lifetime$24.99









