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Elaho (Gemini for iOS)

app store

A Project Gemini browser.

Supports latest Gemini standard, including:

  • all status codes
  • input (including sensitive input)
  • client certificates
  • all of text/gemini

Built on a fork of an open source Firefox Browser for iOS, inheriting the following features:

  • tabs
  • bookmarks
  • history
  • customizable search engines
  • share extension
  • etc

Download on the App Store. Supports iOS 12.0 and above.

Gemini screenshot

Building Requirements

Building the code

  1. Install the latest Xcode developer tools from Apple.
  2. Install Node.js
    brew update
    brew install node
  3. Clone the repository:
    git clone
  4. Build User Scripts:
    cd gemini-ios
    sh ./
  5. Open Client.xcodeproj in Xcode.
  6. Build the Gemini scheme in Xcode.

Building User Scripts

User Scripts (JavaScript injected into the WKWebView) are compiled, concatenated and minified using webpack. User Scripts to be aggregated are placed in the following directories:

|-- /Frontend
    |-- /UserContent
        |-- /UserScripts
            |-- /AllFrames
            |   |-- /AtDocumentEnd
            |   |-- /AtDocumentStart
            |-- /MainFrame
                |-- /AtDocumentEnd
                |-- /AtDocumentStart

This reduces the total possible number of User Scripts down to four. The compiled output from concatenating and minifying the User Scripts placed in these folders resides in /Client/Assets and are named accordingly:

  • AllFramesAtDocumentEnd.js
  • AllFramesAtDocumentStart.js
  • MainFrameAtDocumentEnd.js
  • MainFrameAtDocumentStart.js

To simplify the build process, these compiled files are checked-in to this repository. When adding or editing User Scripts, these files can be re-compiled with webpack manually. This requires Node.js to be installed and all required npm packages can be installed by running npm install in the root directory of the project. User Scripts can be compiled by running the following npm command in the root directory of the project:

npm run build