t(a)ck vs Harbor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
t(a)ck
This app offers a distraction-free reading experience by displaying text word-by-word using Rapid Serial Visual Presentation (RSVP). It allows users to share web articles and read them at adjustable speeds, enhancing focus and comprehension on mobile devices.
- Word-by-word RSVP reading
- Adjustable reading speed (200-700 WPM)
- Smart pacing for punctuation
- Distraction-free interface
- Resume reading from last position
- On-device content extraction
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t(a)ck is an iPhone-first RSVP reading app designed for long-form content. Reading on your phone shouldn’t require endless scrolling and constant refocusing. t(a)ck displays text word-by-word using Rapid Serial Visual Presentation (RSVP), helping you read comfortably at faster speeds with less eye movement. How it works • Share any web article from Safari • Open t(a)ck • Start reading instantly Content extraction happens entirely on-device. No accounts. No backend. No tracking. Core Features • Word-by-word RSVP reading • ORP (Optimal Recognition Point) anchor rendering • Adjustable speed from 200–700 WPM • Smart pacing for punctuation and paragraph breaks • 3-2-1 start countdown • Resume from your last position • Clean, distraction-free interface Built for Focus t(a)ck is designed for people who read posts, essays, and long-form articles on their phones and want a smoother, more focused reading experience. No ads. No analytics. No data collection.
Harbor
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Harbor is a beautiful, local-first read-later app for people who are done losing their reading lists. When you save an article, Harbor keeps a full, clean copy on your device — not a bookmark, the whole thing. It works offline forever, syncs through your own iCloud, and has no account and no server. We can't read your library, can't delete it, and can't be acquired and shut it down. It's just files you own. SAVE FROM ANYWHERE • Share a link from Safari or any app, or paste a URL in the app. • Harbor downloads the page and turns it into a clean, readable article. • Everything you save is yours offline, instantly. A READER YOU'LL WANT TO LIVE IN • Distraction-free typography with light, sepia, and dark themes. • Adjustable font, size, and spacing; reading progress and highlights. PRIVATE, ON-DEVICE EXTRAS — FREE • One-tap summaries and auto-tags powered by on-device Apple Intelligence. • Read-aloud for any article with natural on-device voices. • Instant full-text search across everything you've saved. OWN YOUR DATA, LITERALLY • Export your entire library to HTML and Markdown anytime. • No account, no sign-up, no tracking, no analytics. Nothing collected. ONE-TIME UNLOCK, NEVER A SUBSCRIPTION Save up to 20 articles free. Unlock Harbor Unlimited once for unlimited saves, on-device summaries, read-aloud, and export — a single purchase, yours to keep. Harbor respects publishers: it saves what a normal reader sees, for your own offline reading, and is not for redistribution. Terms of Use (EULA): https://harbor.nyrai.ai/terms.html Privacy Policy: https://harbor.nyrai.ai/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: t(a)ck at none against Harbor's 1. Harbor's advantage is device support (3 vs 1). On price, ads 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. Harbor sells 1 one-off in-app purchase. t(a)ck asks for nothing beyond the download.
| Parameter | t(a)ck | Harbor |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 10 days | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 7 MB |
| Age rating | 4+ | 17+ |
| Developer | AMEYA ZAIRA SHELBY | NYRAI LLC |
In-app purchases
t(a)ck
No in-app purchases
Harbor
- Harbor Unlimited$12.99









