Comparison

t(a)ck vs MarkDeck

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

MarkDeck

Read full description

MarkDeck is a fast, beautiful reader and editor for Markdown, PDF, EPUB and Word documents on iPhone and iPad. Open any .md, .pdf, .epub or .docx file and read it your way — with your own themes, your own fonts and a clean, focused layout. Whether you're a developer viewing README files, a student with PDF handouts, a writer keeping Markdown notes or a book lover with an EPUB library, MarkDeck makes reading a delight. BEAUTIFUL RENDERING FOR EVERY FORMAT Markdown rendered with pixel-perfect precision: scrollable tables, syntax-highlighted code, clickable links and inline images. PDFs and EPUB books open in the same calm reader, one library for everything you read. VISUAL MARKDOWN EDITOR Write and edit like in a word processor: headings, lists, tasks, quotes, code, links, images and tables edited in place, with the Markdown view one tap away. Create new notes and save them straight into your library. READ AND EDIT WORD DOCUMENTS (.DOCX) Edit Word documents on iPhone and iPad, free: fix a typo, rewrite a paragraph, add bold or italic. The file keeps its layout, tables and images. Open Word documents as real pages, like a PDF: page size, headers and footers, tables, images and charts kept. Search the text, jump through the contents built from its headings and pick up where you left off. With Pro, export them to PDF. Templates (.dotx) and macro-enabled files (.docm, .dotm) open too; macros never run. SAVE A COPY Keep any document in Files: choose the folder and the name, and the library copy stays as it is. Free. FILL PDF FORMS Fill in interactive PDF forms (text, checkboxes, options and lists) and save a copy while the original stays untouched. 20 READING THEMES 15 themes free (Light, Dark, Sepia, Paper, AMOLED, Nord, Dracula, Solarized, Gruvbox, Tokyo Night and more) plus 5 premium palettes with MarkDeck Pro. Switch themes without leaving the page. YOUR FONTS, YOUR WAY One font for the app, another for what you read, so a cozy serif for your book never restyles your menus. Two fonts free, eight more with Pro. COMFORTABLE PDF READING Fit-to-width zoom remembered per document, Night and Warm color modes (Pro), password-protected PDFs, and continuous or page-by-page navigation. FULL-SCREEN READING One tap hides everything but the page, with a slim progress line so you never lose your place. BOOKMARKS, HIGHLIGHTS & NOTES Bookmarks that take you back to the right spot. Highlight any passage, pick a color and add a note (Pro), then find every highlight and note in one place. A table of contents jumps to any chapter. ORGANIZE YOUR LIBRARY Group documents into collections, search your library and pick up right where you left off. READING STATS Total time, streak and sessions at a glance; Pro adds a full activity heatmap. OPEN FILES FROM ANY APP Got a .md, .pdf or .epub in Mail, Files or a chat app? Open it straight into MarkDeck, including documents inside ZIP files. PASTE & READ, OR IMPORT A LINK Paste Markdown from any app or AI tool and read it instantly, or paste a web link and MarkDeck turns it into clean, readable text. SYNC WITH GOOGLE DRIVE (PRO) Keep your library, highlights and notes in step across your devices with your own Google Drive. OFFLINE & PRIVATE No account needed for local reading. Documents stay on your device unless you choose to share them or use Google Drive sync. MULTILINGUAL English, Spanish and Portuguese; pick your language independently of your device's. MARKDECK PRO Remove ads and unlock every font, all 20 themes, PDF color modes, unlimited bookmarks, color highlights with notes, documents in tabs, PDF export, the full stats dashboard and Google Drive sync. Eligible subscribers get a 7-day free trial on the annual plan. SUPPORTED FORMATS: .md · .markdown · .txt · .pdf · .epub · .docx · .dotx · .docm · .dotm Privacy Policy: https://markdeck.dev/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

t(a)ck3 screens
MarkDeck4 screens

Verdict

The call

The clearest difference is in-app purchases: t(a)ck at none against MarkDeck's 3. t(a)ck also leads on ads (none vs shown). MarkDeck's advantage is update cadence (every 2 days vs every 10 days) and device support (3 vs 1). On price 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. MarkDeck sells 3 in-app purchases, starting at $2.99 per month. t(a)ck asks for nothing beyond the download.

UpkeepUpdate frequency

t(a)ck ships an update every 10 days, MarkDeck every 2 days. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
t(a)ck versus MarkDeck: the parameters behind the verdict, then further details
Parametert(a)ckMarkDeck
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 10 daysEvery 2 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS17.016.0 — better
Further details — not scored
Size2 MB95 MB
Age rating4+4+
DeveloperAMEYA ZAIRA SHELBYJeisson Segura

In-app purchases

None

t(a)ck

No in-app purchases

3 purchases

MarkDeck

Subscriptions2
  • MarkDeck Pro Monthly7 Days trial$2.991 Month
  • MarkDeck Pro Annual7 Days trial$24.991 Year
One-time1
  • MarkDeck Pro Lifetime$44.99

Questions

Is t(a)ck free?
t(a)ck is free to download, with no in-app purchases.
Is MarkDeck free?
MarkDeck is free to download, with in-app purchases available.
Do t(a)ck or MarkDeck have ads?
MarkDeck shows ads; t(a)ck does not.
Which is updated more often, t(a)ck or MarkDeck?
t(a)ck ships an update every 10 days, and MarkDeck every 2 days. Most recently, t(a)ck was updated on October 4, 2026 and MarkDeck on October 8, 2026.

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