Comparison

Ebook Reader Pro vs Ki

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

Head to head
About

Ebook Reader Pro

This application provides a fast and reliable way to read various document formats on iOS and Mac. It offers features like zoom, bookmarking, text selection, and search capabilities for an enhanced reading experience.

Highlights
  • Supports PDF, ePub, FB2, XPS, DjVu, CBZ, CBR
  • Pinch to zoom and smart zoom
  • Bookmark management
  • Table of contents support
  • Selectable and searchable text
  • Brightness adjustment
  • Document sharing and printing
Features
Read full description

Ebook Reader Pro: the best, easiest, fastest, and reliable way to read PDF, ePub, FB2, XPS, DjVu, CBZ, CBR documents on iOS. Ebook Reader Pro is also available on Mac OS. KEY FEATURES: ◆Pinch to zoom in or out, Smart zoom is also available. ◆Bookmarks Management. ◆Table of contents supported. ◆Text Selectable, copy text to clipboard for further or define text. ◆Text searchable, highlight the word you need. ◆Brightness adjustable. ◆Record documents recently read. ◆Show or hide links. ◆History of pages, back or forward the page. ◆Share or open document with other App. ◆Print document. SUPPORT: You can refer User Manual for any assistance or contact support. Please feel free to contact us if you have any questions about using our products at any time. Email: support@firmshell.com

About

Ki

Capture, organize, and connect all your learning in one place. This app allows you to save notes, links, code snippets, and ideas, then link them together to build a web of knowledge. Find anything fast with full-text search and visual knowledge graphs.

Highlights
  • Capture notes, links, quotes, code snippets, and ideas
  • Organize with color-coded tags and custom topics
  • Connect notes with bidirectional linking
  • Visualize knowledge with interactive graphs
  • Full-text search and saved searches
  • Quick capture via floating button and widgets
  • Review workflow for managing notes
Features
Read full description

Ki-note is your personal knowledge base. Capture, organize, and connect everything you learn — all in one place. CAPTURE EVERYTHING • Notes, links, quotes, code snippets, ideas, and references • Quick capture with a floating + button from anywhere in the app • Save source URLs and titles for web content. You can share links from Safari to Ki-note! • Tag code snippets with their programming language (Swift, Python, JavaScript, TypeScript, Go, Rust) • You can insert notes, text, links, into Ki-notes using the Share functionality • You can insert notes using voice in the Control Center widget or using a shortcut with Siri ORGANIZE YOUR WAY • Tags — color-coded labels to categorize your notes • Topics — group related notes under a single theme with custom icons • Smart Collections — automatic filters like Inbox, Favorites, Reading Queue, Unreviewed, Quotes, Ideas, Links, Untagged, and Unlinked • Configurable Quick Access dashboard on the home screen • Pin, favorite, and archive notes • Review workflow — track notes from Inbox → Unreviewed → Reviewing → Reviewed CONNECT YOUR KNOWLEDGE • Link notes together to build a web of ideas • Bidirectional linking — see which notes link to and from each note • Interactive Knowledge Graph — visualize all your notes and their connections • Customizable graph settings for colors, forces, and display options FIND ANYTHING FAST • Full-text search across all notes • Save frequently used searches for quick access • Browse by tags and topics • Filter by note type, status, or collection BUILT FOR YOU • 100% free — no ads, no subscriptions, all features unlocked • Local-first — your data stays on your device with SwiftData • Localized in 6 languages: English, Spanish, French, German, Italian, and Portuguese • Light and dark mode with customizable themes • Optional one-time tip to support development Ki-note is designed for students, researchers, developers, writers, and anyone who wants to build a personal knowledge base that grows with them.

Screenshots

Ebook Reader Pro4 screens
Ki4 screens

Verdict

The call

The clearest difference is review sentiment: Ki at 100% against Ebook Reader Pro's 38%. Ki also leads on price (Free vs $5.99) and rating (5.0 vs 2.0). Ebook Reader Pro's advantage is in-app purchases (none vs 1) and device support (4 vs 2). On ratings volume and ads 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

Ki is free to download; Ebook Reader Pro costs $5.99 up front. Ki sells 1 one-off in-app purchase. Ebook Reader Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ki holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 38% of Ebook Reader Pro's written reviews are positive against 100% of Ki's.

UpkeepUpdate frequency

Ebook Reader Pro ships an update every 4 days, Ki every 2 days. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.

Scorecard8 real differences · 2 level
Ebook Reader Pro versus Ki: the parameters behind the verdict, then further details
ParameterEbook Reader ProKi
Price$5.99Free — better
Rating2.0 (1 ratings)5.0 (2 ratings) — better
Positive reviews37.5% of reviews100.0% of reviews — better
Number of ratings12 — better
Update frequencyEvery 4 daysEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS12.0 — better18.6
Further details — not scored
Size38 MB4 MB
Age rating4+4+
Developer群群 刘Juan Casanueva

Customer experience

Ebook Reader Pro

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews8 reviews
Positive37.5%
Neutral0.0%
Negative62.5%

Ki

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Ebook Reader Pro

No in-app purchases

1 purchases

Ki

One-time1
  • Buy me a coffee$0.99

Questions

Is Ebook Reader Pro free?
Ebook Reader Pro costs $5.99, with no in-app purchases.
Is Ki free?
Ki is free to download, with in-app purchases available.
Which has better reviews, Ebook Reader Pro or Ki?
Ki is rated higher. Ebook Reader Pro averages 2.0 out of 5 from 1 ratings, while Ki averages 5.0 from 2 ratings.
Do Ebook Reader Pro or Ki have ads?
Neither Ebook Reader Pro nor Ki shows ads.
Which is updated more often, Ebook Reader Pro or Ki?
Ebook Reader Pro ships an update every 4 days, and Ki every 2 days. Most recently, Ebook Reader Pro was updated on October 19, 2026 and Ki on October 18, 2026.

Other comparisons