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
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Ranked alternatives

Showing 241–260 of 1,000 ranked alternatives.

  3. Muxy app icon

    Muxy

    Saeed Vaziry

    ★ 5.01 ratingsDeveloper ToolsFreeData updated 2026-11-12
    App details
  1. EDGE touch (pixel art tool) app icon

    EDGE touch (pixel art tool)

    Takashi Iida

    Create pixel art anytime anywhere.

    The app offers pixel art creation with basic drawing functions and layer support. It allows for animation with onionskin tracing and file sharing in multiple formats.

    ★ 4.611 ratingsGraphics & Design$2.99Data updated 2026-11-12
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  2. SANS OnDemand app icon

    SANS OnDemand

    The Escal Institute Of Advanced Technologies, Inc.

    ★ 3.531 ratingsEducationFreeData updated 2026-10-05
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  5. View Source Premier app icon

    View Source Premier

    Andrey Uspanov

    Edit and code snippets instantly

    And analyze HTML, XML, JavaScript, CSS, JSON, RSS, and ATOM code. Support for iPhone, iPad, and Mac devices. Browse code with intuitive navigation. Edit and format code directly. Save and export code files. Sync code across devices.

    ★ 4.127 ratingsDeveloper Tools$6.99Data updated 2026-11-12
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  10. MiniHog View PostHog Analytics app icon

    MiniHog View PostHog Analytics

    Elizabeth Ha

    Track product on the go

    Track product on the go. key metrics and data visualizations. Add and update events. Receive real-time updates and alerts. Export data and share insights. Manage user segments and filter reports. Sync across devices for continuous access.

    ★ 4.847 ratingsDeveloper ToolsFreeData updated 2026-09-06
    App details
  13. myNotifier - Notifications app icon

    myNotifier - Notifications

    JJ Software

    Notify via iPhone with curl commands

    Send real-time to iPhone via push alerts when system changes or events occur. Integrate with backend APIs, servers, Raspberry Pi, frontends, web apps, shell scripts, or curl commands. Requires API key for setup.

    ★ 4.33 ratingsDeveloper ToolsFreeData updated 2026-09-06
    App details

How we rank alternatives

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