Duo app icon

Apps Like Duo for iPhone and iPad

Test responsive web design views simultaneously.

The app displays a desktop and mobile view simultaneously for responsive web design testing. Users can navigate both panes with synchronized browsing and access WebKit Dev Tools for debugging.

by Electric Pulp★ 0.00 ratingsDeveloper Tools$4.99Data updated 2026-10-25
App detailsView in App Store

Duo screenshots

Ranked alternatives

Showing 141–160 of 1,000 ranked alternatives.

  1. Zedis app icon

    Zedis

    树洲 谢

    ★ 0.00 ratingsDeveloper ToolsFreeData updated 2026-09-06
    App details
  2. Watermark Maker・Text On Photo app icon

    Watermark Maker・Text On Photo

    Kayma Tech LLP

    Design watermarks for photos

    Create custom watermarks by adding logos, copyright symbols, or personalized designs. Choose from various fonts, clip art, and colors for customization. Apply transparent backgrounds for seamless integration into photos and videos.

    ★ 4.3234 ratingsPhoto & VideoFreeData updated 2026-09-06
    App details
  7. Termix Pro: SSH & SFTP Client app icon

    Termix Pro: SSH & SFTP Client

    Simon Zvara

    Connect securely, edit remotely, transfer files

    Provides a secure SSH and for managing remote servers. Users can connect via SSH, transfer files using , and execute commands in a terminal. It supports terminal emulation, session management, and file navigation.

    ★ 4.7119 ratingsDeveloper Tools$9.99Data updated 2026-11-01
    App details
  9. FlutterFlow - Build Different app icon

    FlutterFlow - Build Different

    FlutterFlow, Inc.

    Apps with Flutter code export

    Create user interfaces with a drag-and-drop visual builder. Use pre-built widgets or custom components. Generate clean Flutter code for iOS, Android, and web. Deploy apps to stores or web with one click.

    ★ 4.139 ratingsDeveloper ToolsFreeData updated 2026-09-06
    App details
  13. ReqSink app icon

    ReqSink

    Glitchbuster Labs, LLC

    ★ 0.00 ratingsDeveloper ToolsFreeData updated 2026-09-06
    App details
  14. Termix: SSH Client & Terminal app icon

    Termix: SSH Client & Terminal

    Simon Zvara

    Connect securely, edit code, and manage servers

    Provides a secure SSH and SFTP for managing remote servers. Users can connect via SSH, transfer files using SFTP, and execute commands in a . It supports customization, session management, and secure file navigation.

    ★ 4.8104 ratingsDeveloper ToolsFreeData updated 2026-09-06
    App details
  15. Reqable app icon

    Reqable

    Shanghai Reqable Technology Co., Ltd.

    ★ 5.04 ratingsUtilitiesFreeData updated 2026-09-06
    App details

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.