SpeederReader vs Silt
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SpeederReader
This app uses Rapid Serial Visual Presentation (RSVP) to display words one at a time, allowing users to read significantly faster. It supports various file formats and offers a distraction-free reading experience with adjustable speeds and helpful visual cues.
- Adjustable reading speed up to 750 WPM
- RSVP (Rapid Serial Visual Presentation)
- Supports PDF, EPUB, HTML, Markdown, TXT
- Read articles from URLs
- Access Project Gutenberg books
- Automatic progress saving
- Dark mode
Read full descriptionHide full description
Read faster. Read more. Finish books in half the time. SpeederReader uses RSVP (Rapid Serial Visual Presentation) — a proven speed reading technique that displays one word at a time at your chosen pace. No eye movement, no distractions, just pure reading speed. Most readers reach 2–3x their normal reading speed within minutes. SPEED READING MADE SIMPLE - Read at up to 750 words per minute - Adjustable speed from 50 to 750 WPM - Gold-highlighted Optimal Recognition Point guides your eye to the right letter instantly - Flow mode slows at punctuation to match natural reading rhythm READ ANYTHING - Open PDFs, EPUBs, HTML, Markdown, and plain text files - Paste any URL to speed read articles, blog posts, and web pages - Browse 60,000+ books from Project Gutenberg — built right in - Upload from your device or iCloud DESIGNED FOR READERS - Save and resume your reading progress automatically - Paragraph context keeps you oriented in the text - Dark mode reader that's easy on the eyes - Word-by-word navigation when paused - Built-in dictionary lookup - English and Spanish interface - no subscriptions and no ads - All files processed locally on your device - No account required, no tracking, no data collection - Open source and community driven Whether you're a student tackling textbooks, a professional keeping up with articles, or a book lover who wants to read more — SpeederReader helps you read faster without sacrificing comprehension. Download SpeederReader and start reading more books today.
Silt
Read full descriptionHide full description
Silt is a calm place to think on the page. It's built for two kinds of writing — essays and journaling — and for the reading that feeds them. Choose your intent and the room changes to suit it: an open canvas for an essay, a quiet daily page for a journal, a focused reader for a book. Most writing apps forget what you've read. Silt doesn't. As you write, it brings the relevant lines from your reading alongside the paragraph you're working on — so the right quote or idea is there when you reach for it. WRITE WITH INTENTION • Start from a prompt — "What are you here to think about?" — not a blank page. • Separate modes for drafting and revising: get the words down first, shape them later. • Every paragraph keeps its own version history. Try a line three ways and never lose the one you liked. • Set a gentle deadline and a daily writing reminder. A LIVING READING CORPUS • Bring in highlights from Kindle and Obsidian, or highlight as you read inside Silt. • While you write, Silt surfaces the passages that match what you're saying, ranked by relevance. • Drop any highlight straight into your draft as a quote. READ INSIDE THE APP • Open your own PDFs and EPUBs in a clean, distraction-free reader. • Your books stay on your device. • Highlights you make flow back into your corpus, ready to resurface later. ONE LIBRARY, EVERYTHING IN ITS PLACE • Notes, journal entries, highlights, and books — organized and searchable. • Light and dark, with accent colors you can tune to your taste. PRIVATE BY DESIGN • Your writing is end-to-end encrypted (AES-GCM-256). Only you hold the key. • Local-first: the app works fully offline, with no account required. • Optional sync keeps your work in step across iPhone, iPad, and Mac. Silt runs natively on iPhone, iPad, and Mac — one app, all your devices. Writing settles like sediment, layer on layer, until something solid forms. Silt is where it settles.
Screenshots
Verdict
The clearest difference is iOS requirement: SpeederReader at 15.1 against Silt's 17.0. 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | SpeederReader | Silt |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 15 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | John Ottenlips | Santiago Sonzini |
In-app purchases
SpeederReader
No in-app purchases
Silt
No in-app purchases









