Comparison

SpeederReader vs Silt

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read 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.

About

Silt

Read 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

SpeederReader4 screens
Silt4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 7 level
SpeederReader versus Silt: the parameters behind the verdict, then further details
ParameterSpeederReaderSilt
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS15.1 — better17.0
Further details — not scored
Size15 MB4 MB
Age rating4+4+
DeveloperJohn OttenlipsSantiago Sonzini

In-app purchases

None

SpeederReader

No in-app purchases

None

Silt

No in-app purchases

Questions

Is SpeederReader free?
SpeederReader is free to download, with no in-app purchases.
Is Silt free?
Silt is free to download, with no in-app purchases.
Do SpeederReader or Silt have ads?
Neither SpeederReader nor Silt shows ads.

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