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 41–60 of 1,000 ranked alternatives.

  1. Motif: Print your memories app icon

    Motif: Print your memories

    mimeo.com, inc.

    Create photo books and calendars automatically

    Create photo books and calendars by auto-selecting top images. Customize layouts and add text. high-quality albums for lasting . Share finished projects via email or social media. Edit photos with cropping and filters.

    ★ 4.62,607 ratingsPhoto & VideoFreeData updated 2026-09-18
  2. Logo Maker: Watermark Designer app icon

    Logo Maker: Watermark Designer

    Orange Media CO.,Ltd

    Design logos in minutes

    Create logos in a few steps using 3000+ patterns and customizable templates. Save high-resolution PNG or JPG files. Design for businesses, events, social media, and more.

    ★ 4.22,176 ratingsGraphics & DesignFreeData updated 2026-09-15
  1. Affinity Photo 2 for iPad app icon

    Affinity Photo 2 for iPad

    Serif (Europe) Ltd.

    Edit photos, retouch images, create art

    Edit photos and images with advanced tools for retouching, layering, and painting. Create multi-layered art and designs. Adjust colors, contrast, and lighting. Export in various formats and share directly.

    ★ 4.62,655 ratingsPhoto & VideoFreeData updated 2026-09-06
  2. LingCode app icon

    LingCode

    HainanMandi Tech Inc

    ★ 0.00 ratingsDeveloper ToolsFreeData updated 2026-09-06
  3. WAS: User-Agent Switcher app icon

    WAS: User-Agent Switcher

    Andreii Simaranov

    Switch views with one click

    Switch between mobile and desktop website views with a single click. Adjust strings to simulate different devices. Use built-in WebView to preview websites on various smartphones and screens.

    ★ 4.685 ratingsUtilities$1.99Data updated 2026-09-06
  4. Triplety app icon

    Triplety

    Masayuki Kondo

    Code with live preview and reload

    Provides a development environment for web designers and developers. It includes live preview and reload for real-time code changes. It supports HTML, CSS, and JavaScript with auto-completion. It also handles LESS, SCSS, and CoffeeScript.

    ★ 0.00 ratingsDeveloper Tools$1.99Data updated 2026-09-08
  5. Termux+ app icon

    Termux+

    志鹏 潘

    Access servers, transfer files, and manage terminals

    Manage servers with SSH and SFTP connections, enabling file transfers and remote command execution. Access terminal interfaces for interactive tasks. Support SOCKS5 proxy and jump host for secure connectivity.

    ★ 4.7234 ratingsDeveloper ToolsFreeData updated 2026-09-06
  6. xTerminal - SSH Terminal Shell app icon

    xTerminal - SSH Terminal Shell

    婉媚 邵

    Connect, control, and manage servers remotely

    Provides an interactive SSH for executing commands on servers. Users can monitor system status with top or follow logs using tail -f. It includes a powerful editor for document manipulation.

    ★ 4.71,964 ratingsDeveloper ToolsFreeData updated 2026-10-30
  7. Mockup - UI/UX Design app icon

    Mockup - UI/UX Design

    Apprime Studio sarl

    Mockups, sketch wireframes, build prototypes

    Create designs with a flexible canvas and 45+ device frames. Sketch with Apple Pencil, build wireframes, and develop interactive prototypes. Collaborate in real-time and export designs in multiple formats.

    ★ 4.4550 ratingsGraphics & DesignFreeData updated 2026-09-17
  8. Python IDE & Jupyter – Juno app icon

    Python IDE & Jupyter – Juno

    Rational Matter Ltd

    Write code and run notebooks

    Navigate and manage files and folders, preview documents and media. Browse and view notebooks. Run scripts and notebooks. Integrate with source code formats. Edit and debug code with syntax highlighting. Save and export code changes.

    ★ 4.61,125 ratingsDeveloper ToolsFreeData updated 2026-10-13
  9. DevTools Extension app icon

    DevTools Extension

    浩鑫 庄

    Debug code, inspect elements, track network requests,

    Developer tools for Safari enables web developers to inspect DOM elements, view network activity, examine console logs, and access stored data. It allows code inspection, error checking, and resource management.

    ★ 3.416 ratingsDeveloper ToolsFreeData updated 2026-09-06
  10. Tampermonkey app icon

    Tampermonkey

    Jan Biniok

    Edit web pages with userscripts

    Customize web pages with userscripts. Add or modify features using JavaScript. Create, manage, and run scripts on any website. Enhance browsing experience by altering page behavior.

    ★ 3.161 ratingsProductivity$2.99Data updated 2026-10-30

How we rank alternatives

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