About AKCLNT Responsive Checker

Why we built AKCLNT Responsive Checker

Every week we ship websites and apps for clients at AKCLNT. And every week the same question comes up: "Does it look right on my phone?" Browser DevTools shows one device at a time, most online checkers limit you to a handful of tests before asking for an account, and almost none help with mobile apps.

So we built the tool we wanted ourselves: paste a URL, see it on many real device viewports at once, spot the problem, and get the code that fixes it. No signup, no limits.

What AKCLNT Responsive Checker does

• Website checker — preview any public URL on 56 real CSS viewports (iPhone, Galaxy, Pixel, iPad, MacBook, desktop) side by side, with zoom, rotation, a width slider and A vs B comparison.
• App checker — frame app screenshots on real devices with notch and safe-area guides, check App Store and Google Play screenshot sizes, and run APK / IPA builds live through Appetize.
• Issues & fixes — the 18 most common responsive bugs on web and mobile, each with copy-paste CSS, Flutter, React Native or Android code.
• Guides and device sizes — practical articles and a viewport reference for 56 devices.

Privacy first

AKCLNT Responsive Checker runs entirely in your browser. There are no accounts, the sites you test are loaded directly from their own servers, and screenshots you add to the App checker never leave your device. Read the full privacy policy.

Who's behind it

AKCLNT Responsive Checker is made by AKCLNT, a software studio in Rawalpindi, Pakistan, building fast responsive websites, AI chatbots and automation for startups and businesses. We also run AKCLNT Tools, a collection of free online utilities.

Found a bug, want a device added, or need help fixing your site? Get in touch.