Test and preview your responsive web applications across iPhone 18 Pro Max, iPhone Duo Foldable, Galaxy S25 Ultra, Pixel 9 Pro, and iPad in real-time interactive 3D.
Experience real pixel-density rendering, touch emulation, Dynamic Island 2.0 interaction, 3D exploded layer diagnostics, and synchronized multi-device viewports.
No need to buy physical test phones. MobileSim provides verified viewport dimensions, hardware aspect ratios, and pixel densities for all top-tier devices.
The flagship 6.9″ titanium monster with Dynamic Island 2.0 and ProMotion 120Hz display.
Dual-screen seamless book fold with dual-pane multitasking and zero-gap hinge physics.
Boxy sharp titanium frame with centered infinity-O punch hole and ultra-high resolution.
Smooth pebble rounded silhouette with standard Android system bars and Super Actua OLED.
Ultra-thin 5.1mm chassis, tandem OLED display, supporting landscape split views.
49mm aerospace titanium case for wearable web widgets and compact notifications.
Traditional devtools shrink the browser window. MobileSim emulates physical mobile hardware, gesture behaviors, and CSS environment safe areas.
Rotate, inspect, and present your client designs in photorealistic 3D perspectives. Tilt with your mouse cursor or toggle between Isometric and Profile viewports.
No credit card. No mandatory login. No pro paywalls. We believe every developer deserves world-class responsive testing tools without recurring subscriptions.
Test env(safe-area-inset-top) and env(safe-area-inset-bottom) precisely. Ensure your sticky headers and floating action bars never collide with the physical notch or home bar.
padding-top: max(16px, env(safe-area-inset-top));
padding-bottom: max(16px, env(safe-area-inset-bottom));
Scroll on iPhone 18 Pro Max and watch the Galaxy S25 and iPad Pro mirror the exact scroll position in real time. Cut your testing and QA cycle by 70%.
Detailed breakdown of viewport dimensions, physical pixel grids, and DPR values used by MobileSim.
| Device Model | Category | Viewport (CSS pt) | Native Resolution | Device Pixel Ratio | Screen Ratio | Special Cutout |
|---|---|---|---|---|---|---|
| iPhone 18 Pro Max | iOS Flagship | 440 × 956 pt | 1320 × 2868 px | @3.0x | 19.5 : 9 | Dynamic Island 2.0 |
| iPhone Duo (Fold) | Foldable | 540 × 720 pt (x2) | 2160 × 2880 px | @2.8x | 4 : 3 Open | Center Spine Crease |
| Samsung Galaxy S25 Ultra | Android Flagship | 412 × 915 pt | 1440 × 3120 px | @3.5x | 19.5 : 9 | Infinity-O Pinhole |
| Google Pixel 9 Pro | Android Flagship | 412 × 892 pt | 1344 × 2992 px | @3.0x | 20 : 9 | Center Hole Visor |
| iPad Pro M4 13″ | Tablet | 1024 × 1366 pt | 2064 × 2752 px | @2.0x | 4 : 3 | Slim Symmetric Bezel |
| Apple Watch Ultra 2 | Wearable | 410 × 502 pt | 410 × 502 px | @2.0x | 1 : 1.2 | Flat Sapphire Rim |
Discover curated partner services, dev tooling deals, and sponsored software.
Everything you need to know about the MobileSim 100% Free Chrome Extension.
Yes, absolutely! MobileSim is 100% free with no hidden charges, premium paywalls, account requirements, or watermark branding. We built it as a fast, beautiful community utility for web designers and engineers.
Yes! Because MobileSim runs directly inside your Chrome browser as an extension, it has full native access to http://localhost:3000, http://127.0.0.1, staging servers, and internal VPN environments without any tunneling required.
Clicking the "💥 3D Exploded View" button separates the physical hardware layers along the Z-axis in CSS 3D space. You can visually inspect the titanium bezel, anti-reflective ceramic glass cover, the active OLED viewport layer, and cutout shadows.
Yes. When switching between iPhone 18, Samsung Galaxy S25 Ultra, or Pixel 9 Pro, the extension automatically sets the accurate User-Agent headers, viewport meta tags, and touch event handlers to trigger your site's native mobile rules.
Join over 1,200,000 developers building better mobile experiences with MobileSim. Free forever.
One-click install. Instant activation in your browser toolbar.