# Folio: Markdown+RST+Code+PDF — Document Reader for Developers

> Document Reader for Developers (iPhone/iPad app by BlueTao LLC.)

- Source: https://appshunter.io/ios/app/folio-markdown-plus-rst-plus-code-plus-pdf/id6812495228 (this page in markdown: same URL + `.md`)
- Developer: [BlueTao LLC](https://appshunter.io/developer/6812495230)
- Category: Developer Tools, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 11 MB
- Released: 2026-10-01
- Data updated: 2026-10-09

## What is Folio?

Folio is a small, native reader for the files a working life accumulates: Markdown notes and READMEs, reStructuredText and Sphinx documentation, source code, configuration and data files, PDFs, and images. It gives them one calm library, clear typography, and room to focus, on iPhone, iPad, and Mac.

READ MARKDOWN THE WAY IT WAS MEANT TO LOOK
Headings, lists, tables, task lists, blockquotes, code blocks, links, and images render on a page designed for reading, in light or dark, with serif or sans-serif type, and with text size, line spacing, and page width under your control. Equations in TeX notation render offline. An outline jumps between headings, Find highlights every match, Show Source reveals the document's own text, and Share offers the source file or a PDF of the page. The HTML that READMEs use for badges, centered logos, and collapsible sections renders too. reStructuredText files render the same way, with the Sphinx signatures, version notes, and cross-references of Python's own documentation.

EVERY TEXT FILE, EXACTLY AS WRITTEN
JSON, YAML, TOML, XML, HTML, CSS, shell scripts, Makefiles, logs, diffs, and source code in any common language open verbatim, with tabs, indentation, and long lines preserved. Code is colored by language, with three schemes and six editable colors, or no coloring at all if you prefer.

PDFS AND IMAGES, WITHOUT LEAVING THE APP
PDFs open with their own outline and Find. JPEG, PNG, HEIC, GIF, TIFF, WebP, BMP, and AVIF images fit the screen and zoom smoothly. Both are viewed from your files where they are; only one opened from a link is downloaded and kept.

FILES, FOLDERS, AND LINKS
Open a document, browse a whole folder, drop a file into the window, or paste a link. GitHub file links and direct HTTPS links to text, PDFs, and images are saved for offline reading, and text is refreshed while you read. Private repositories work with a personal access token that stays in your device's Keychain.

YOURS, AND ONLY YOURS
There is no account, no analytics, no advertising, and no upload service. Documents, bookmarks, and settings stay on your device. A single switch stops documents from loading images from the web.

FREE TO BEGIN, SIMPLE TO UNLOCK
Read complete text documents up to 10 KB for free, and view PDFs and images without limit. Folio Plus unlocks larger documents, Export PDF, and, on Mac, Print:
• Folio Plus Lifetime: a one-time purchase of $19.99 (USD)
• Folio Plus Yearly: an auto-renewing subscription of $9.99 (USD) per year
Both support Family Sharing.

Subscriptions are charged to your Apple Account at confirmation and renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel them in your Apple Account settings. Privacy Policy: https://bluetaollc.github.io/FolioApp/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Requires iOS 17, iPadOS 17, or macOS 14 or later.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Folio Plus | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Folio Plus Lifetime | $19.99 | one-time |


## Is Folio safe?

Not enough ratings yet to assess Folio.

## Is Folio legit?

Folio: Markdown+RST+Code+PDF has limited verification signals. The AppsHunter Legitimacy Score for Folio is 50 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1 — 2026-10-07

Bug fixes.
Support for Mermaid diagrams.

### 1.0 — 2026-10-07

No release notes.

---

*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 2026-10-09.*