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

Duo screenshots

Ranked alternatives

Showing 1–20 of 1,000 ranked alternatives.

  1. Inspect Browser app icon

    Inspect Browser

    Parallax Dynamics Inc.

    Web elements and debug code

    Allows developers to debug and test web content directly on iOS. View and edit HTML elements with live preview. Adjust and CSS rules in real time. Access JavaScript console for debugging. Check element dimensions and properties.

    ★ 4.2124 ratingsDeveloper Tools$6.99Data updated 2026-10-28
  1. Affinity Designer 2 for iPad app icon

    Affinity Designer 2 for iPad

    Serif (Europe) Ltd.

    Design with precision, edit vector graphics, create

    Create illustrations, branding, logos, and UI/UX designs. Edit vector graphics and raster images. Apply filters, adjust colors, and add text. Export in multiple formats and share directly. Sync with desktop versions for seamless workflow.

    ★ 4.73,787 ratingsGraphics & DesignFreeData updated 2026-09-06
  2. Freeform app icon

    Freeform

    Apple Inc.

    Sketch, design, and sync across devices

    Create digital boards to organize ideas, projects, and research. Add photos, videos, audio files, documents, PDFs, web links, and stickies. Sync boards across devices using iCloud.

    ★ 4.6373,523 ratingsProductivityFreeData updated 2026-09-06
  3. Python Editor App app icon

    Python Editor App

    Andromeda Corp Limited

    Code in on your device

    Write clean, error-free code on iOS with syntax highlighting, auto-indentation, and code completion. Create, edit, and run scripts directly. Supports debugging and integrates with version control systems.

    ★ 4.16,449 ratingsDeveloper ToolsFreeData updated 2026-10-21
  4. ON1 Photo RAW for Mobile app icon

    ON1 Photo RAW for Mobile

    onOne Software

    Capture, edit, and organize photos

    Edit RAW photos with color and tone adjustments. Import and process RAW files from cameras or storage devices. Organize and manage libraries. Capture pro-grade RAW images with manual controls.

    ★ 4.51,515 ratingsPhoto & VideoFreeData updated 2026-09-19
  5. Termius - Modern SSH Client app icon

    Termius - Modern SSH Client

    Termius Corporation

    Connect via SSH, Mosh, and Telnet

    Allows SSH, Mosh, Telnet, and SFTP connections from mobile or desktop. It supports port forwarding and secure file transfers. Users can access a virtual keyboard or connect Bluetooth keyboards. Gestures and device shaking control terminal actions.

    ★ 4.719,548 ratingsDeveloper ToolsFreeData updated 2026-10-28
  6. JigSpace app icon

    JigSpace

    JigSpace Inc.

    Create 3D presentations and view in AR

    Create and share 3D presentations using pre-built templates. View presentations in augmented reality directly on the device. Edit 3D models, add text, and export presentations for sharing.

    ★ 4.88,450 ratingsGraphics & DesignFreeData updated 2026-09-11
  7. Web Messenger for Dual Chat app icon

    Web Messenger for Dual Chat

    Irfan Aksu

    Browse websites in desktop view

    Browse websites in desktop view for better compatibility and usability. Access third-party web apps normally restricted to desktop browsers. Adjust user agent settings to customize browsing experience.

    ★ 4.63,568 ratingsUtilitiesFreeData updated 2026-09-06
  8. MediBang Paint – Drawing & Art app icon

    MediBang Paint – Drawing & Art

    MediBang inc.

    Draw with brushes and tools anywhere

    Create art with customizable brushes and access to 700 additional premium brushes. Design comic panels using 1000 screentones and 60 fonts. Apply filters and use fun background brushes. Save and share artwork directly.

    ★ 4.632,541 ratingsGraphics & DesignFreeData updated 2026-09-10

How we rank alternatives

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