If you want a portable, non-invasive upgrade that preserves your vehicle's original dashboard and offers flexible audio routing, choose kalakus Carplay Screen; if you need a permanent, integrated double-DIN replacement with an internal operating system for split-screen multitasking and offline maps, choose EWLSAC 7.
• kalakus Carplay Screen: Its greatest strength is the wireless connectivity and portability that allows it to function as a standalone unit without cutting wires or removing your factory radio. The trade-off is that it relies entirely on your phone's processing power for navigation and apps, rather than having its own internal OS. This pick is for drivers who want a modern interface without committing to a permanent installation or those with older vehicles where in-dash replacements are difficult.
• EWLSAC 7: Its biggest advantage is the built-in Android 13 operating system with 2GB RAM and 64GB storage, enabling standalone features like split-screen viewing and offline map downloads independent of your phone. The trade-off is that it requires a specific vehicle fitment (Skoda Roomster) and a full double-DIN installation that replaces the existing head unit. This pick is for owners of compatible vehicles who want a dedicated, high-performance multimedia center with advanced video capabilities.
The kalakus unit stands out immediately because of its design philosophy: it is a tool, not a renovation. At just 3 x 5 x 3 inches, this 7-inch HD touchscreen is engineered to be a portable accessory rather than a fixed component of the car's interior. If you drive an Audi Q3 8U MMI Quattro S Line Sport from 2010 to 2018, or any other vehicle where you cannot easily swap out the factory stereo, this screen offers a way to bridge the gap between an older car and modern smartphone technology. It does not require you to gut your dashboard or hire a professional installer. You simply mount it, connect it, and you have a functional CarPlay and Android Auto interface.
What makes this device particularly compelling for daily commuters is the emphasis on audio flexibility. Unlike many standard aftermarket screens that force all sound through a single output, the kalakus includes an upgraded audio output mode that connects directly to the car speaker via Bluetooth. This means you can enjoy the "shocking stereo sound effect" provided by your vehicle's existing audio hardware while using the screen for navigation. Furthermore, it offers multiple fallback options including AUX input, FM transmitter capabilities, and a built-in speaker. This versatility ensures that even if the primary connection fails, you still have a working entertainment system.
This product is ideal for the driver who values convenience and reversibility above all else. It is perfect for someone who might move cars frequently, owns a rental vehicle they want to upgrade temporarily, or simply refuses to alter their factory dashboard permanently. However, you should skip this option if you need features that rely on the device itself running applications independently. Since the kalakus acts primarily as a display mirror for your phone, it cannot run apps like YouTube or TikTok directly on the unit itself unless you utilize the wireless mirror link feature, which still depends on your phone's battery and data connection. It is a brilliant solution for safe driving and hands-free control via steering wheel integration, but it is not a standalone computer.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-11-06 · 8 min read · Independent comparison
The EWLSAC 7 represents a completely different category of product: a robust, in-dash double-DIN head unit designed specifically for the Skoda Roomster models produced between 2003 and 2015. This is not a plug-and-play accessory; it is a comprehensive replacement for your factory radio. The core of this unit is its internal hardware, powered by a processor running the newest Android 13 system. With 2GB of RAM and 64GB of ROM, this device has enough computing muscle to handle streaming media players, complex navigation tasks, and heavy multitasking without needing to constantly offload work to your smartphone.
For the driver who loves technology, the standout feature here is the split-screen capability. Because the EWLSAC 7 runs its own operating system, you can view two different content sources simultaneously on the 7-inch IPS 2.5D touch screen. Imagine having a navigation map on one half of the display while monitoring a music player or a live camera feed on the other. This level of functionality is impossible with a simple mirror-link device like the kalakus. Additionally, the built-in GPS and WiFi support mean you can download map data for offline use, ensuring you never lose your way even in areas with poor cellular reception. The inclusion of a backup camera with AHD image quality, IP68 waterproofing, and a 170-degree wide-angle lens further cements its role as a serious safety and utility upgrade.
This unit is strictly for the owner of a compatible Skoda Roomster who wants a permanent, high-fidelity upgrade. The installation process involves replacing the entire double-DIN slot, which suggests a commitment to keeping the vehicle for the long term. The audio experience is also elevated through EQ DSP technology, which aims to reproduce sound highly similar to the original recording, offering a richer listening experience than basic FM or AUX inputs. However, this comes with limitations regarding compatibility; it will not fit an Audi Q3 or any vehicle that does not accept a standard double-DIN size. If you do not own a Skoda Roomster from the specified years, this product is not a viable option for you. It is a powerful piece of hardware that demands a specific home, but within that home, it delivers a premium multimedia experience.
• Best for Portability and Non-Invasive Installation → kalakus Carplay Screen. Its compact 3 x 5 x 3 inch design and lack of wiring requirements make it the clear winner for renters, temporary setups, or vehicles where dashboard modification is prohibited.
• Best for Standalone Performance and Multitasking → EWLSAC 7. With its internal Android 13 OS, 2GB RAM, and split-screen functionality, it handles video playback and navigation independently of your phone's resources.
• Best for Audio Integration with Factory Speakers → kalakus Carplay Screen. The ability to route audio directly to the car's existing speakers via Bluetooth provides a more seamless and higher-quality soundstage compared to the built-in speakers of most in-dash units.
• Best for Offline Navigation and Data Management → EWLSAC 7. The built-in WiFi and GPS allow for pre-downloading map data, a critical feature for road trips where signal is unreliable, whereas the kalakus relies on your phone's hotspot or data plan.
• Best for Backup Camera Quality → EWLSAC 7. It ships with a dedicated AHD backup camera featuring night vision and IP68 waterproofing, offering superior reliability and image clarity for reversing maneuvers.
• Best for Versatile Video Streaming → EWLSAC 7. While the kalakus supports wireless mirror link for videos, the EWLSAC 7 can play 1080P video files directly from its 64GB storage without needing a connected phone.
• Best for Steering Wheel Control → Both. Both units support SWC integration, allowing you to manage volume and tracks without taking your hands off the wheel, though the implementation depends on your specific vehicle's harness compatibility.
• Best Value for Long-Term Ownership → EWLSAC 7. If you keep your Skoda Roomster for years, the permanent upgrade with a powerful internal processor offers more longevity and features than a portable add-on.
After weighing the specifications and real-world use cases presented by these two distinct devices, I recommend the EWLSAC 7 for anyone who owns a compatible Skoda Roomster and plans to stay put. The internal Android 13 processor and split-screen capabilities transform the driving experience into something far more capable than a simple phone mirror. It turns the car into a smart hub, handling navigation, music, and video with a level of autonomy that the kalakus simply cannot match.
However, if your situation involves an older Audi or a vehicle where you cannot or will not cut into the dashboard, the kalakus Carplay Screen is the only logical choice. It delivers the essential CarPlay and Android Auto benefits without the mess of a permanent install. Ultimately, for roof cargo or any long journey requiring reliable, standalone navigation and entertainment that doesn't drain your phone battery, the EWLSAC 7's internal power makes it the superior technical solution, provided it fits your vehicle.
No, the kalakus Carplay Screen is designed to mirror your smartphone's interface. It requires a connected iPhone or Android device to function for navigation, music, and calls, although it does include a built-in speaker for basic audio if needed.
No, the EWLSAC 7 is specifically designed for the Skoda Roomster 2003-2015 and requires a double-DIN slot. It will not physically fit or electrically integrate with the MMI system found in Audi Q3 models.
Since the EWLSAC 7 has its own internal battery management and Android 13 processor, it does not drain your phone's battery during navigation or media playback. The kalakus relies on your phone's battery to power the screen and apps, which may deplete faster over long distances.
The EWLSAC 7 includes a dedicated AHD backup camera with night vision and waterproofing. The kalakus listing mentions compatibility with a backup camera but does not explicitly state that a camera is included in the box, so you would likely need to source one separately.
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