Comparison

Redd vs Interstate

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

Head to head
About

Redd

This app enhances reading speed using a unique "Rolling Chunk" engine that presents text in fluid segments, unlike traditional word-by-word flashers. It supports web articles, PDFs, and ePubs, offering adjustable speeds and a smart library to save progress. All processing is done locally for enhanced privacy.

Highlights
  • Rolling Chunk engine for fluid text presentation
  • Supports web articles, PDFs, and ePubs
  • Adjustable reading speed (200-1000 WPM)
  • Smart library saves reading progress
  • 100% local text processing for privacy
  • Light and Dark themes
Features
Read full description

Experience the next generation of speed reading. Redd is an advanced RSVP (Rapid Serial Visual Presentation) reader designed to help you read articles, books, and documents up to 3x faster - without the eye strain of traditional speed readers. Unlike standard apps that flash one word at a time, Redd features a unique "Rolling Chunk" engine. This uses a smart sliding window to present text in natural, fluid segments, allowing your brain to process information faster while maintaining high comprehension. KEY FEATURES The Rolling Engine Experience a smoother, more natural flow than standard one-word flashers. Adjust chunk sizes to fit your cognitive pace. Multiple Content Sources Web Articles: Import articles for distraction-free reading or use our in-app browser Documents: Native support for PDF and ePub files Clipboard: Import text from documents and notes Full Control Variable Speed: Adjust from 200 to 1000 Words Per Minute (WPM) Scrubbing: Intuitive slider controls to rewind or skip ahead Themes: Beautiful Light and Dark modes for extended reading sessions Smart Library Redd automatically saves your progress in every file and article. Pick up exactly where you left off, every time. Privacy First All text processing happens 100% locally on your device. Your content stays on your device. Redd: Read faster. Retain more.

About

Interstate

Read full description

Interstitial journaling is a powerful way of reclaiming your focus. In a world where the things around us are constantly fighting for our attention, the moments between tasks are when we're most at risk of getting distracted. By using these moments to take note of what we were doing or what we want to do next, we can stop ourselves from losing focus, and save ourselves from having to think "what was I doing, again?". Interstate makes this easy by providing a clean and fast interface for logging and reviewing your time. FEATURES: - Made for iOS and iPadOS - Automatic timestamping - Keyboard shortcuts - Sync across devices with iCloud - No account necessary

Screenshots

Redd4 screens
Interstate4 screens

Verdict

The call

The clearest difference is in-app purchases: Interstate at none against Redd's 3. Redd's advantage is update cadence (weekly vs every 3 months) and iOS requirement (13.0 vs 26.0). On price, ads 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. Redd sells 3 one-off in-app purchases. Interstate asks for nothing beyond the download.

UpkeepUpdate frequency

Redd ships an update weekly, Interstate every 3 months. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 7 level
Redd versus Interstate: the parameters behind the verdict, then further details
ParameterReddInterstate
PriceFreeFree
Rating4.3 (4 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings4 — better—
Update frequencyWeekly — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better26.0
Further details — not scored
Size35 MB5 MB
Age rating17+4+
DeveloperMonosphereCiaran Mulholland

In-app purchases

3 purchases

Redd

One-time3
  • Small tip$2.99
  • Generous tip$4.99
  • Amazing support$9.99
None

Interstate

No in-app purchases

Questions

Is Redd free?
Redd is free to download, with in-app purchases available.
Is Interstate free?
Interstate is free to download, with no in-app purchases.
Do Redd or Interstate have ads?
Neither Redd nor Interstate shows ads.
Which is updated more often, Redd or Interstate?
Redd ships an update weekly, and Interstate every 3 months. Most recently, Redd was updated on October 6, 2026 and Interstate on September 30, 2026.

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