Developer Tools vs Mobbin

devtools.tr is a free toolbox of 173 web and developer tools for webmasters, developers and system administrators. Every check runs live against real servers: DNS lookup, SSL/TLS and security headers, website analyzer with PDF reports, SEO and Core Web Vitals, TTFB, CDN and compression tests, IP geolocation, WHOIS, ASN and blacklist checks. Developer utilities include a JSON formatter and validator, regex tester, Base64, UUID, SQL/HTML/CSS/JS formatters and minifiers. Results come as clear reports with scores and ready-to-paste fixes for Apache, nginx and Cloudflare. No sign-up, no limits, fully in English and Turkish, and works on mobile.

Mobbin is a reference library of real user interface designs, collecting screenshots and complete user flows from hundreds of popular iOS, Android and web applications. Product designers use it to see how leading companies solve common problems such as onboarding, paywalls, checkout, settings or empty states, instead of searching app stores and taking screenshots by hand.

The library can be browsed by app, by screen type, by UI element (buttons, cards, tab bars, modals) and by flow, so you can watch an entire sign-up or subscription journey step by step. Content is regularly updated as apps change, and designers can save screens into collections, share them with their team and copy screens directly into Figma for annotation and moodboards. A free plan offers limited access to recent content, while Pro unlocks the full library, history and unlimited collections, and team plans add shared workspaces and billing.

Mobbin suits product designers, UX researchers, product managers and founders who want proven patterns and competitive references before designing a flow. It is an inspiration and research tool rather than a design tool, and copied screens belong to their original owners, so they are references, not assets to ship. Page Flows offers similar flow recordings with video, Dribbble and Behance show conceptual design work rather than shipped products, and UI kits in the Figma Community are better when you need reusable components.