Comparison

Read Rocket vs Silt

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

Head to head
About

Read Rocket

Enhance reading speed and focus with three science-backed modes: Flash, Scroll, and Speak. Import documents from various formats and sync across Apple devices. Enjoy a private, ad-free experience with a one-time purchase.

Highlights
  • Flash Mode for word-by-word reading
  • Scroll Mode with guided highlight
  • AI Speak Mode with synchronized highlight
  • Import PDFs, EPUBs, web articles, and more
  • Cross-device syncing (iPhone, iPad, Mac)
  • On-device processing for privacy
  • One-time purchase, no subscriptions
Features
Read full description

Read Rocket gives you three powerful, science-backed ways to read faster and stay focused — whether you're powering through textbooks, catching up on articles, or flying through your reading list. THREE WAYS TO READ Flash Mode displays one word at a time at a fixed focal point, eliminating the eye movements that account for most of your reading time. Set your own pace and watch your speed climb. Scroll Mode adds a guided highlight that moves through your document at a steady rhythm, keeping your attention locked and preventing the backtracking that slows you down. Speak Mode pairs high-quality AI text-to-speech with a synchronized visual highlight, engaging both your eyes and ears for stronger comprehension and retention. IMPORT ALMOST ANYTHING Bring in PDFs, EPUBs, Word documents, web articles, plain text, Markdown, HTML, RTF, OpenDocument files, and more — Read Rocket strips away the clutter so you can focus on what matters. Save articles straight from Safari or any app using your device's share menu, and they're instantly ready to read. YOUR LIBRARY, YOUR WAY Start reading on your iPhone, pick up right where you left off on your Mac or iPad. Your progress syncs automatically. Export your library to take your files where you need them. BUILT FOR APPLE Read Rocket is a native app designed for iPhone, iPad, and Mac. It supports widgets for quick access to your reading list, a share extension for effortless importing, and all the system features you expect from a great Apple app. PRIVACY FIRST Read Rocket processes everything on your device. Your documents never leave your hands. No accounts, no tracking, no ads. AI VOICES THAT SOUND NATURAL Speak Mode includes Kokoro AI voices that run entirely on your device — no internet connection needed, no data sent anywhere. Choose from American and British English accents, or use any of Apple's built-in system voices. SIMPLE, FAIR PRICING Try Read Rocket free for 7 days. Then it's just $8.99 — one time, forever yours, on all your Apple devices. No subscriptions. No recurring charges. No upsells.

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

Read Rocket4 screens
Silt4 screens

Verdict

The call

The clearest difference is in-app purchases: Silt at none against Read Rocket's 1. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Read Rocket sells 1 one-off in-app purchase. Silt asks for nothing beyond the download.

Scorecard1 real difference · 9 level
Read Rocket versus Silt: the parameters behind the verdict, then further details
ParameterRead RocketSilt
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS18.017.0 — better
Further details — not scored
Size383 MB4 MB
Age rating4+4+
DeveloperJOSEPH CLAYTON KLEINSantiago Sonzini

In-app purchases

1 purchases

Read Rocket

One-time1
  • Unlock Read Rocket$8.99
None

Silt

No in-app purchases

Questions

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

Other comparisons