The work you've done
in panoramic view

Do you remember the exhausting screenshot-patchwork-making process prior to a client presentation? (...so do we). That's why we prepared a tool that shows the design on multiple devices with a single load. Just imagine how much faster it is to scroll through the design overview in a panoramic view.
Responsive design test result OnDevice
Responsive design test result OnDevice
All device in one screen for responsive design testing

All in one screen

Respect your time. You surely prefer creating rather then tinkering in tools and IDEs or digging for device specs. Here you have all the research done for you. The most common devices with all the display information needed, ready for cross-testing, quick bug searching and presentation. So you can stay focused on what matters, the creation.
  • Comparable devices OnDevice responsive testing horizontal viewport

    To see all the devices in a blink of an eye

  • Predefined device list OnDevice responsive testing full range testing

    To show on mobile and UHD at the same time

  • Presentation mode OnDevice responsive testing agency header

    To present it, not just deliver it

Show the real
to seal the deal

Have you been dreaming about a pulsating design review where all the design is shown in real environment, keeping the client focused and excited, without carrying a bunch of devices with you? You can do it online, loading from your Localhost and yet ensuring a device lab experience. Because the closer to the real thing, the better.
Show your responsive design OnDevice - ondeviceapp.com

You can show a scalable, inspectable, rotatable design preview that explains itself. Also, for a comprehensive test result, On Device gives you the ability to test on all types of devices from mobiles and tablets to laptops and office monitors that your clients might have.

Technical details

  • retina-ready display
  • physical device size
  • fixed real life device size proportion
  • scalable device viewport
  • stored device list and viewport setting
  • native and CSS resolution
  • OS specific scrollbar setting
  • device market share
  • localhost testing
  • secure HTTP port
Responsive design tool illustration

Made for agencies and designers
to build a strong responsive reputation

with a responsive tool they can trust and their clients will love


Device spectrum for responsive design testing Device list OnDevice responsive design tester

listing the most used devices (new devices added regularly based on the members' requests)

OnDeviceApp neon logo OnDeviceApp neon logo

Get inside Ondevice

Create account OnDevice App Test account includes 5 devices
Professional account with full device list available for members for 45 GBP (+VAT) / month.
Start testing OnDevice