# Aperio - Code Reader — Read code on iPhone and iPad

> Mobile source code reader with syntax highlighting and code structure analysis. (iPhone/iPad app by Brendan Buono.)

- Source: https://appshunter.io/ios/app/aperio-code-reader/id6799091140 (this page in markdown: same URL + `.md`)
- Developer: [Brendan Buono](https://appshunter.io/developer/6799091142)
- Category: Developer Tools, Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 19 MB
- Languages: American English
- Released: 2026-08-31
- Data updated: 2026-10-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/aperio-code-reader/id6799091140/reviews.md

## What is Aperio?

Aperio is a code reader — not an editor. Browse any GitHub or GitLab repo, download it for offline reading, and actually understand it: tree-sitter parsing, sticky scope headers, symbol outline, 40+ languages. No accounts, no analytics, no tracking.

Open code from anywhere
• Share a file or a GitHub link to Aperio from any app
• Open files from the Files app, iCloud Drive, or another app's "Open In"
• Paste a snippet straight from the clipboard
• Load a URL from GitHub, Gist, or GitLab — Aperio finds the raw file for you

Built to be read
Syntax highlighting for more than 40 languages, with themes designed for long reading sessions. Adjust the font size by pinching, turn line numbers and word wrap on or off, and pick a theme that suits the light you are in.

Understand the structure, not just the text
Aperio parses your code with tree-sitter, the same engine used by modern editors, so it understands the shape of a file:
• Sticky scope headers pin the enclosing type and function to the top of the screen, so you always know where you are
• A symbol outline lists every class, struct, function, and property — tap one to jump straight to it
• Bookmarks save the lines you want to come back to
• Search jumps between matches with a running count

Yours, and private
Aperio has no accounts, no analytics, and no tracking. Files you open stay on your device. The app talks to the network only when you ask it to open a URL, and then only to the address you gave it.

Aperio Pro
Aperio is free to use, including bookmarks, the symbol outline, sticky headers, and five URL loads a month. A single one-time purchase — no subscription — unlocks:
• Focus Mode, which dims everything outside the block you are reading
• Unlimited URL loading
• Offline caching of URL-loaded files
• Unlimited bookmarks per file
• Your full recents history
• Six additional themes, including a true-black OLED theme

Languages
Swift, Python, JavaScript, TypeScript, JSON, YAML, HTML, CSS, Rust, Go, Java, C, C++, Ruby, Bash, Kotlin, Dart, PHP, Scala, Haskell, Elixir, Lua, R, SQL, Dockerfile, TOML, Terraform, Zig, Objective-C, C#, Perl, OCaml, Clojure, Erlang, Julia, Groovy, PowerShell, Nix, Markdown, LaTeX, Protobuf, GraphQL, and more.

## Key features

- Syntax highlighting for 40+ languages
- Code structure analysis with tree-sitter
- Sticky scope headers
- Symbol outline for navigation
- Adjustable font size and themes
- Open code from various sources (files, URLs, clipboard)

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Aperio Pro | $9.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/aperio-code-reader/id6799091140/reviews.md

### 5/5 — Newly into code

*2026-09-17*

This has been really helpful as a new person getting the code being able to read the different things that I’m building without having to be in front of a computer.

## Frequently asked questions about Aperio

### What is Aperio?

Aperio is a mobile application designed for reading source code on iPhones and iPads. It focuses on providing a comfortable reading experience with features like syntax highlighting and code structure analysis, rather than code editing.

### What programming languages does Aperio support?

Aperio supports syntax highlighting for over 40 programming languages, including popular ones like Swift, Python, JavaScript, Java, C++, and Go, among many others.

### How does Aperio help understand code structure?

Aperio uses tree-sitter to parse code, enabling features like sticky scope headers that keep the current function or type visible, and a symbol outline to quickly navigate through classes, functions, and properties.

### Is Aperio private and secure?

Yes, Aperio is designed for privacy. It has no accounts, analytics, or tracking. Files you open remain on your device, and network access is limited to loading URLs you explicitly request.

### What features are unlocked with Aperio Pro?

Aperio Pro is a one-time purchase that unlocks unlimited URL loading, offline caching, unlimited bookmarks per file, full recents history, Focus Mode, and six additional themes, including an OLED theme.

### Does Aperio have ads?

No, Aperio does not contain advertisements. The core functionality is free, with an optional one-time purchase for additional Pro features.

### What devices is Aperio compatible with?

Aperio is available for iPhone and iPad devices, offering a tailored experience for each platform.

### How often is Aperio updated?

Aperio was last updated on August 31, 2026, with version 1.0. Future updates will likely continue to enhance features and language support.

## Version history (last 2 releases)

### 1.1 — 2026-09-28

Browse GitHub & GitLab repos

### 1.0 — 2026-08-31

No release notes.

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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 2026-10-10.*