Your content looks ready. Prove it.
Put apps, demos, forms, decks, and training on a real device before anyone else sees them. Test touch, layout, speed, media, and offline behavior — not just a browser-sized imitation.
Real-device content testing means opening and using digital content on the hardware where it will actually run — so you catch touch, layout, performance, media, and connectivity problems before release.
Test the experience, not the screenshot.
Go from finished file to hands-on feedback without building a native app or waiting on a developer.
Bring your content
Upload an AI-built experience, HTML app, PDF, presentation, form, video, training module, or kiosk.
Send it to a device
Choose a real phone or tablet and put your work in someone's hand in minutes — no app-store submission required.
Use it like a user
Tap, rotate, scroll, play, submit, and disconnect. Fix what matters, upload the revision, and test again.
Find the issues a browser frame misses.
A responsive layout is only one part of a reliable device experience.
Touch and gestures
Make sure buttons are easy to hit, scrolling feels natural, and taps, swipes, and interactive elements respond correctly.
Screen fit and orientation
Check real safe areas, browser chrome, portrait and landscape layouts, text size, and clipped or overlapping content.
Speed and performance
See how quickly the experience loads and responds on the hardware your audience actually carries.
Offline behavior
Disconnect the device and verify that the experience still opens, runs, and captures what it needs to capture.
Media playback
Confirm that video, audio, animation, and interactive media behave consistently outside a desktop browser.
Forms and input
Use the real keyboard, selectors, signatures, and submissions to uncover friction before users do.
A browser can estimate. A device can answer.
Browser-only preview
- Simulated viewport
- Mouse standing in for touch
- Desktop processing power
- Reliable office connection
- Approximate media behavior
Yonderly real-device test
- Actual screen and safe area
- Real touch and gestures
- Real device performance
- True offline behavior
- Native media playback
Built for work that has to perform in someone's hand.
Before you start testing.
What is content testing on a real device?
It means opening and using digital content on an actual phone, tablet, computer, or screen before broad distribution. You can verify touch, layout, performance, media, screen fit, and offline access in the environment where the content will be used.
What content can I test with Yonderly?
AI-built apps, HTML experiences, demos, calculators, forms, PDFs, presentations, training modules, video, kiosks, and other digital content designed for a screen.
Why is a browser preview not enough?
A browser preview can approximate screen size, but it doesn't fully reproduce physical touch, device performance, local storage, orientation changes, media behavior, or loss of connectivity.
Can I test without an internet connection?
Yes. Put the content on the device, disconnect it, and verify the same offline experience users will have at events, job sites, classrooms, and field visits.
Do I need a developer to run a test?
No. Yonderly is designed for creators, marketers, trainers, and other nontechnical teams. Upload the content, choose the device, and test.
Before you send it,
touch it.
Yonderly is available now on the App Store and Google Play — download it and put your first content on a real device today.
iOS and Android · available now · 14-day free trial
