webRios
R on iOS through webR
Free · Designed for iPad. Not verified for macOS.
R 4.6 on iPhone and iPad. Stop runaway code with one tap, run whole scripts, open R files from other apps, and keep a separate R workspace for each project.
webRios is an R editor for iPhone and iPad. It uses webR, the WebAssembly version of R, to run your code on the device itself, with no server behind it.
R ON YOUR DEVICE
webR brings R 4.6 to your device, and your code and data stay there. Most R code runs here, though a few packages are not available for WebAssembly.
CONSOLE
You can run R code and see each result right away, with messages, warnings and errors set apart. Code completion comes from R's own completion engine, with function signature hints. You can stop a runaway loop with one tap, or with Command-period on a keyboard.
EDITOR
You can write and save R scripts in tabs, and the editor stays fast in long ones. Run a whole script, run a selection, or step through one statement at a time with Command-Return. The editor has syntax highlighting, code folding, find and replace, a code outline, and a keyboard row with the assignment arrow and the pipe. Three example scripts are built in.
PLOTS
Base R graphics and ggplot2 charts collect in a gallery, and can also appear in the Console. You can pin the plots you want to keep, zoom in, and export or share them. Interactive widgets such as plotly and leaflet work too.
DATA
The Data Import Wizard brings in CSV files. Data frames, large ones included, open in a grid you can sort, filter and search. You can inspect any column with summary statistics and a chart, and compare two data frames row by row.
PACKAGES
You can install packages from the webR repository, which offers more than 20,000 CRAN packages. Browse tells you what each package does, and installed packages are saved for next time. When library() can't find a package, one tap installs it.
HELP
You can search R's documentation on the device and read formatted help pages, then run a page's examples directly.
ENVIRONMENT AND HISTORY
The Environment shows every variable with its type, size and a preview. History keeps your past commands and their results, ready to run again or export.
PROJECTS AND FILES
Projects keep your scripts and data together, and each one can have its own R workspace. R scripts, R Markdown, Quarto, R data and CSV files open in webRios from Files, Mail and other apps. Your webRios folder appears in the Files app, and Spotlight finds your scripts from the Home Screen.
NETWORK ACCESS
Your code can reach the web with httr2 and curl. By default their traffic goes through a proxy that runs on your device.
IPAD
A four-pane workspace puts the editor, console, environment and plots side by side. Files can open in their own windows, and the File, Code, Run and View menus sit in the menu bar with keyboard shortcuts throughout.
ACCESSIBILITY
webRios supports VoiceOver, with results and errors read aloud, along with Dynamic Type, Reduce Motion and Increase Contrast. The default themes meet WCAG AA contrast, and errors are marked without relying on color.
PRIVATE BY DESIGN
Your code runs on your device and works offline. Code and data leave the device only when you share them, install a package, or make a network request from your code.
GOOD FOR
webRios suits learning R, quick analyses, statistics coursework, trying out an idea, and teaching.
webRios is built on webR, the open-source, MIT-licensed WebAssembly version of R (https://webr.r-wasm.org). webRios is not affiliated with or endorsed by the webR project, the R Project, the R Foundation or Posit.
The first launch takes a few seconds while R starts. Heavy computations can be slow. You can't build R packages or compile C or Fortran code in webRios.
webRios 1.2.0 is here, and it's a big one: R 4.6, a Stop button, interactive plots, network access, and an editor that keeps up with you.
NEW
• You can now stop running code with a tap on Stop, or with Command-period, and your variables stay put.
• webRios now uses webR with R 4.6.0, and offers to reinstall your R 4.5 packages in one tap.
• Interactive plots from plotly, leaflet and DT now work, and any plot can appear right in the Console.
• Your code can now reach the web with httr2 and curl, by default through a proxy that runs on your device.
• R scripts, R Markdown, Quarto, .rds, .RData and CSV files now open in webRios from Files, Mail and other apps.
• Each project can keep its own variables once you turn on Save Workspace.
• A Getting Started checklist walks you through your first six steps.
• On iPad, the File, Code, Run and View menus sit in the menu bar, with keyboard shortcuts throughout.
IMPROVED
• The editor stays fast in long scripts, and Command-Return steps through a script one statement at a time.
• Code completion narrows as you type.
• The data viewer opens large data frames quickly, then filters, sorts and searches them.
• Browse describes every package, even offline, and saved packages load several times faster.
• Help pages gain a Back button, tables and links between pages.
• VoiceOver reads results and errors aloud, with labeled controls throughout, and the app respects Dynamic Type, Reduce Motion and Increase Contrast.
Dozens of smaller refinements round out the release.
webRios 1.2.0 requires iOS 26.
The developer, James Balamuta, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- HJJB, LLC
- Size
- 60.6 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 HJJB, LLC