Slit vs HeyReader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Slit
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Read articles faster with RSVP (Rapid Serial Visual Presentation) — a word-by-word speed reading method that eliminates eye movement and keeps you focused. Import articles from any app using the iOS Share extension or paste a URL directly. Slit extracts the article content automatically and presents it one word at a time at 300 words per minute with intelligent pacing that adjusts for word length, punctuation, and reading flow. Key features: - Share extension for one-tap import from Safari and other apps - Smart content extraction that pulls clean article text from web pages - Dynamic pacing for comfortable reading - Automatic progress tracking with resume from where you left off - Full-screen, distraction-free reading experience - Gesture-based controls — tap to play/pause - Offline reading — articles are stored locally on your device - No accounts or subscriptions required
HeyReader
This app provides an audio assistant for physical books. Upload the book's PDF, and then ask questions aloud about terms or concepts. The app searches your book and speaks the answers, helping you stay focused on reading.
- Voice-activated questions
- Answers read aloud
- Searches book PDF
- Focuses on physical reading
- Requires book PDF
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While reading your physical book, ask HeyReader about any term you don't understand, and it answers aloud. That way your focus stays on the page. Best with Meta Ray-Bans. Any Bluetooth headphones work too. Using HeyReader: 1. Upload PDF 2. Start reading your physical copy 3. Say "Hey Reader" to ask questions and hear answers What you need: 1. Physical book 2. PDF version of the same book 3. Meta Ray-Bans, or any Bluetooth headphones *The assistant searches the book PDF for citation backed answers. New terms in your book send you to ChatGPT or Google on your phone. Every switch over makes it less likely you come back to the reading. (According to Microsoft and UC Irvine researchers, "it takes 23 minutes to resume an interrupted task”.¹) Keep your 23 minutes -- HeyReader searches the book and answers by voice, so your focus stays on the page. Terms of Use: https://tryreader.app/terms Privacy Policy: https://tryreader.app/privacy License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ¹ (Mark et al., CSCW 2015)
Screenshots
Verdict
The clearest difference is in-app purchases: Slit at none against HeyReader's 2. HeyReader's advantage is update cadence (weekly vs every 2 months). 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
Both are free to download. HeyReader sells 2 in-app purchases, starting at $6.99 per month. Slit asks for nothing beyond the download.
Slit ships an update every 2 months, HeyReader weekly. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.
| Parameter | Slit | HeyReader |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 26.2 | 26.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Timur Badretdinov | Roshan Gill |
In-app purchases
Slit
No in-app purchases
HeyReader
- Pro Monthly$6.991 Month
- Pro Annual$62.991 Year





