# webrios — R on iOS through webR

> Local R programming environment for iOS and iPadOS. (iPhone/iPad app by James Balamuta.)

- Source: https://appshunter.io/ios/app/webrios/id6758071087 (this page in markdown: same URL + `.md`)
- Developer: [James Balamuta](https://appshunter.io/developer/1868243999)
- Category: Developer Tools, Education
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 52 MB
- Languages: American English
- Released: 2026-01-22
- Data updated: 2026-08-14
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/webrios/id6758071087/reviews.md

## What is webrios?

webRios brings the power of R to your iPhone and iPad through webR, a WebAssembly distribution of R. Run R code directly on your device with no server connection required.

NEARLY FULL R ENVIRONMENT
Run R 4.5 locally using WebAssembly technology in a nearly full feature R environment. 
Your code executes entirely on your device, keeping your data private and secure. 
(Some R packages are not available.)

INTERACTIVE CONSOLE
Execute R code with instant feedback.
Intelligent code completion powered by R's completion engine.
Function signature hints while typing. 
Syntax highlighting for better readability. 
Command history with easy recall. 
Smart quote handling for mobile keyboards.

HELP BROWSER
Search R documentation from your device.
Browse function help pages with formatted output.
Quick access to recently viewed topics.
Run code examples directly from help pages.

POWERFUL CODE EDITOR
Write and save R scripts with tabbed editing. 
Code completion with function, argument, and package suggestions. 
Code folding to collapse and expand sections. Line numbers and current line highlighting.
R-specific keyboard with assignment arrow, pipe, and common operators.
Run entire scripts, selected code, or the current line.
Customizable keyboard shortcuts. 
Per-tab undo and redo. 

DATA VISUALIZATION
Generate plots with standard R graphics.
Browse plots in a scrollable gallery. 
Pin favorite plots to keep them. 
Export plots via the system share sheet.

DATA TOOLS
Import CSV files with a full-featured Data Import Wizard. 
Inspect data frame columns with summary statistics and charts.
Filter and explore data interactively.

PACKAGE MANAGEMENT
Works with over 15,000 R packages compiled for WebAssembly.
Install packages from the webR repository. 
Browse available packages. 
Manage installed packages. 

ENVIRONMENT INSPECTOR
View all variables in your workspace. 
See variable types, classes, and sizes. 
Monitor your R session state.
Preview data values. 

EXECUTION HISTORY
Browse past commands with timestamps and results.
Filter by source, success, or failure.
Re-run previous commands with a tap.
Export history as text or JSON.

PROJECT WORKSPACES
Per-project R workspaces keep your sessions separate. 
Automatic session persistence and working directory tracking. 
Restart R with unresponsive session detection and recovery.

FILE MANAGEMENT
Create and edit R scripts. 
Import data files. 
Integration with iOS Files app. 
Share files with other apps.

SPOTLIGHT SEARCH
Find your R scripts from the iOS home screen.
Scripts are indexed with function names and package references.
Tap a result to open it directly in the editor.

IPAD OPTIMIZED
Four-pane workspace layout. 
Console, editor, environment, and plots side by side.
Inline help documentation browser. 
Full keyboard shortcut support with discoverability overlay.

WORKS OFFLINE
Once launched, webRios works completely offline. 
Your code and data never leave your device unless you explicitly share them.

PERFECT FOR
Learning R on the go. Quick data analysis. Statistical calculations. Code prototyping. Teaching and demonstrations.

Built with webR, an open-source MIT-licensed project that compiles R to WebAssembly. Learn more at https://r-wasm.org. This app is not affiliated with the webR development team or Posit.

Note: First launch requires a few seconds to initialize the R environment. Some computationally intensive operations may be slower than desktop R due to WebAssembly constraints. This environment is not able to support developing an R package or writing compiled code.

## Key features

- Local R execution via WebAssembly
- Interactive console with code completion
- R documentation browser
- Tabbed code editor with syntax highlighting
- Data visualization and plot gallery
- CSV import and data frame inspection
- Package management for over 15,000 R packages
- Offline functionality

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/webrios/id6758071087/reviews.md

### 5/5 — What can I say?

*2026-07-29*

It’s fantastic! An incredibly helpful tool. I use it to practice small snippets of code when I’m laying on the couch or out somewhere. It’s great for reinforcing your learning when you’re away from the computer.

## Frequently asked questions about webrios

### What is webrios?

webrios is a mobile application that brings the R programming language to your iPhone and iPad. It uses WebAssembly to run a nearly full R environment directly on your device.

### Does webrios require an internet connection?

No, once launched, webrios works completely offline. Your code and data remain on your device unless you choose to share them.

### What R version does webrios use?

webrios runs R version 4.5 locally using WebAssembly technology.

### Can I install R packages on webrios?

Yes, webrios works with over 15,000 R packages compiled for WebAssembly. You can install packages from the webR repository and manage your installed packages within the app.

### How does webrios handle data privacy?

Your code executes entirely on your device, ensuring your data remains private and secure. No server connection is required for code execution.

### Is webrios available on Android?

webrios is currently available for iOS devices, specifically the iPhone and iPad.

### What are the benefits of using webrios for data visualization?

webrios allows you to generate plots with standard R graphics, browse them in a scrollable gallery, pin favorites, and export them via the system share sheet.

### How often is webrios updated?

The latest version, 1.1.2, was released on March 3, 2026, indicating recent development activity. Users can expect ongoing updates to improve functionality and compatibility.

## Version history (last 4 releases)

### 1.1.2 — 2026-03-03

What's new in v1.1.2?

STARTUP RELIABILITY
• Fixed a bug that could cause repeated startup failures by leaking server connections on each retry. 
• Initialization errors are now detected and reported immediately instead of silently timing out after two minutes.

MEMORY PRESSURE HANDLING
• The app now detects when iOS reclaims memory and shows a clear message with the option to restart R. 
• Plot caches are automatically trimmed when memory is low.

BACKGROUND SAVE PROTECTION
• Workspace saves when switching apps are now protected from interruption.

OTHER
• Packages tab added to the iPhone tab bar.
• History tab and workspace settings restored.

### 1.1.1 — 2026-02-16

What's New in Version 1.1.1

BUG FIXES
Fixed a threading crash that could occur during startup on some devices.
Fixed function signature display showing a stray "NULL" in Variable Details.

IMPROVED STARTUP EXPERIENCE
Phased startup with a determinate progress bar showing real-time status.
Redesigned error screen when R fails to start, with clearer messaging and a direct "Report Issue" button.
Startup diagnostic log for troubleshooting.

FEEDBACK AND DIAGNOSTICS
Overhauled feedback system with email support and log attachments.
Separate startup log and error log viewers with copy-to-clipboard.
First-launch reset option in debug tools.

### 1.1.0 — 2026-02-11

What's New in Version 1.1.0

CODE COMPLETION AND SIGNATURE HELP
Intelligent autocomplete powered by R's built-in completion engine. 
Function argument suggestions appear when you type ( or a comma. 
Package completions after :: and variable completions after $. 
Function signature tooltips show parameter hints while typing. 
Popups auto-dismiss and follow the cursor.

CUSTOMIZABLE KEYBOARD SHORTCUTS
Keyboard shorts include: 
Cmd+Enter to run a line, Cmd+Shift+Enter to run all, Option+Hyphen to insert the assignment arrow, and Cmd+Shift+M to insert the pipe operator. 
Fully customizable in Settings. 
iPad shortcut discoverability overlay when holding Cmd.

EDITOR IMPROVEMENTS
Unified context-aware Run button that runs a selection, the current line, or the entire script.
Line numbers and current line highlight toggled in Settings.
Per-tab undo and redo with toolbar buttons. 
Code folding with inline previews.

PLOT MANAGEMENT
Full-screen export flow with system share sheet. 
Pin favorite plots to prevent cleanup.

DATA TOOLS
Redesigned Data Import Wizard with full read.csv() options. 
Column detail sheets with filtering, summary statistics, and charts.

WORKSPACE AND PROJECTS
Per-project R workspace isolation. 
Session persistence and working directory tracking.

IPAD ENHANCEMENTS
Improved four-pane layout with better sizing. 
Inline help documentation in the Help tab.
Compact Environment panel. 

RELIABILITY AND PERFORMANCE
Restart R Session with unresponsive detection and recovery. 
Hardened JavaScript interactions with improved error handling and version validation. 
Fixed large package install truncation. 
Security and stability improvements.

### 1.0 — 2026-01-23

No release notes.

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## More apps by James Balamuta

- [U.S. Citizenship Test Prep '26](https://appshunter.io/ios/app/us-citizenship-test-prep-26/id6757681329)
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All apps by James Balamuta: https://appshunter.io/developer/1868243999

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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 2026-08-14.*