# Folio Reader by ThoughtBubble — EPUB, PDF & Comic Book Reader

> EPUB, PDF & Comic Book Reader (iPhone/iPad app by ThoughtBubble Development, LLC.)

- Source: https://appshunter.io/ios/app/folio-reader-by-thoughtbubble/id6806095381 (this page in markdown: same URL + `.md`)
- Developer: [ThoughtBubble Development, LLC](https://appshunter.io/developer/6800190976)
- Category: Books, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 23 MB
- Languages: American English
- Released: 2026-11-10
- Data updated: 2026-11-12

## What is Folio Reader by ThoughtBubble?

Folio is a fast, private home for the books you own. Open DRM-free EPUBs, PDFs, and comics on a calm page that gets out of the way, and keep your whole library on your own devices.

THE READING ROOM
• Six themes: Light, Warm Sepia, Parchment, Slate, Dark, and OLED Black, or follow the system.
• Publisher, Serif, Sans, Rounded, or Mono type with adjustable size, page width, and line spacing.
• Turn pages or read in one continuous scroll.
• PDFs add a reflowed Text mode for small screens.
• Folio remembers your place by the passage itself, so it holds steady when the layout changes.

HIGHLIGHTS, NOTES, AND SEARCH
• Highlight passages, add notes, and set bookmarks.
• Search inside a book and jump straight to the line.
• See progress, highlights, and notes for every book at a glance.

YOUR LIBRARY
• Import from Files, share from Safari or other apps, or download from a catalog.
• Folio reads covers and details and shelves every book automatically.
• Continue Reading and recent books wait on Home.
• Browse by cover or list, filter by format, and search by title, author, or series.
• Built for libraries of ten thousand books and more.

OPDS CATALOGS
• Connect Calibre, Komga, Standard Ebooks, Project Gutenberg, or any OPDS 1 or OPDS 2 feed.
• Browse by cover, search, and download straight into your library.
• Password-protected catalogs keep their credentials in your Keychain.

SUPPORTED FORMATS
EPUB 2 and 3, PDF, and comic archives (CBZ, CBR, CB7, CBT).

PRIVACY
Folio does not require an account, shows no ads, and collects no data. Your library, reading positions, highlights, and notes stay in the app on your devices. Optional sync uses the private CloudKit database in your own iCloud account and is off until you turn it on. Folio does not remove DRM and only opens books without copy protection.

SUPPORT
Visit folio.thoughtbubble.dev/help or email support@thoughtbubble.dev.

## Is Folio Reader by ThoughtBubble safe?

Not enough ratings yet to assess Folio Reader by ThoughtBubble.

## Is Folio Reader by ThoughtBubble legit?

Folio Reader by ThoughtBubble appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Folio Reader by ThoughtBubble is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 0.1.0 — 2026-11-10

No release notes.

## More apps by ThoughtBubble Development, LLC

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- [SReader: Speed Reading](https://appshunter.io/ios/app/sreader-speed-reading/id6800191316)
- [ConvoCards: Conversation Game](https://appshunter.io/ios/app/convocards-conversation-game/id6800430085)
- [SearchThing: Private Search](https://appshunter.io/ios/app/searchthing-private-search/id6801084820)

All apps by ThoughtBubble Development, LLC: https://appshunter.io/developer/6800190976

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-12.*