Comparison

Codex Reader Early Access vs Episteme

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

Head to head
About

Codex Reader Early Access

Features
Read full description

Codex Reader turns the books you already own into one library you can read and listen to. Connect your own sources — Plex, Audiobookshelf, OPDS catalogs, and Storyteller — or bring files straight in from the Files app. Your EPUBs, M4Bs, and MP3 audiobooks all land in a single shelf. READ AND LISTEN, TOGETHER Readalouds keep the text and the narration in sync, highlighting each line as it's spoken. Switch between reading and listening whenever you like and pick up exactly where you left off. BUILT FOR iOS CarPlay for the drive. Siri and Spotlight to jump straight into a book. Home Screen widgets and a Live Activity for what you're in the middle of. Everything works offline once downloaded. MADE YOURS Choose your app icon, tune typography and playback to taste, organize shelves and reading lists, and follow authors or servers to hear about new arrivals. Codex Premium adds iCloud sync so your place in a book follows you between devices.

About

Episteme

Features
Read full description

Episteme Reader is an offline-first, privacy-focused document and e-book reader. It supports PDF, EPUB, MOBI, AZW3, FB2, ODT/FODT, DOCX, Comics, Markdown, HTML, and plain text files. • Two Reading Modes Switch between a paginated view for a traditional book-like experience and continuous vertical scrolling for quick reading. Both modes work across all supported formats. • PDF Annotations Draw directly on PDF pages using pen, fountain pen, pencil, highlighter, and eraser tools. Add text boxes anywhere on a page with system or imported fonts. Annotated documents can be exported with full vector fidelity. • Custom Fonts Import your own font files (.ttf, .otf) and use them while reading any ebook format. Embedded book fonts and system fonts are also fully supported. • Text Selection & Search Select, copy, and search text across all formats. Full-text search with background indexing for large documents. built-in OCR support for scanned or image-based PDFs. • Text-to-Speech Listen to any document using your device's TTS engine. • Smart Tools (Pro) Get context-aware dictionary definitions for words and phrases. Generate concise summaries of chapters or pages to quickly understand complex material. • Library & Organization Manage your collection with custom shelves and collections. Sort by title, author, or reading progress. Jump back into recent books instantly. • Local Folder Sync Point Episteme at a folder on your device to automatically import and track books. • Privacy Episteme is designed to work entirely offline. No account is needed for any core feature. AI-powered\online features process data securely in memory without storing any user content.

Screenshots

Codex Reader Early Access4 screens
Episteme4 screens

Verdict

The call

The clearest difference is update cadence: Episteme at every 2 days against Codex Reader Early Access's weekly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Codex Reader Early Access sells 1 one-off in-app purchase and Episteme sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Codex Reader Early Access ships an update weekly, Episteme every 2 days. Both last shipped on October 14, 2026.

Scorecard1 real difference Ā· 5 level
Codex Reader Early Access versus Episteme: the parameters behind the verdict, then further details
ParameterCodex Reader Early AccessEpisteme
PriceFreeFree
Update frequencyWeeklyEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.0
Further details — not scored
Size104 MB99 MB
Age rating4+12+
DeveloperCameron GreenAryan Raj

In-app purchases

1 purchases

Codex Reader Early Access

One-time1
  • Codex Premium$6.99
1 purchases

Episteme

One-time1
  • Episteme Pro$5.99

Questions

Is Codex Reader Early Access free?
Codex Reader Early Access is free to download, with in-app purchases available.
Is Episteme free?
Episteme is free to download, with in-app purchases available.
Do Codex Reader Early Access or Episteme have ads?
Neither Codex Reader Early Access nor Episteme shows ads.
Which is updated more often, Codex Reader Early Access or Episteme?
Codex Reader Early Access ships an update weekly, and Episteme every 2 days. Most recently, Codex Reader Early Access was updated on October 14, 2026 and Episteme on October 14, 2026.

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