My talk explains how one of the world’s largest home appliance manufacturers could save millions by using Qt over Web technologies.
Both Facebook and Netflix implemented their eponymous apps with Web. Despite spending millions of dollars, neither of them could achieve an iPhone-like user experience (60 frames per second and less than 100ms response to user inputs) on anything less powerful than or as powerful as a system-on-chip (SoC) with four ARM Cortex-A9 cores.
In contrast, numerous products like infotainment systems, in-flight entertainment systems, harvester terminals and home appliances prove that you can achieve an iPhone-like user experience (UX) on single-core Cortex-A8 SoCs. Our above-mentioned manufacturer HAM Inc. (renamed for the sake of confidentiality) verified these results by building both a Web and Qt prototype.
At a volume of one million units, the SoC for Qt is 11 euros cheaper per unit than the SoC for Web – to achieve the same user experience. At a volume of one million units, an industrial-grade NXP i.MX53 SoC with a single Cortex-A8 core costs roughly 10 euros. This is enough for Qt. At the same volume, an NXP i.MX6 SoC with four Cortex-A9 cores required for Web costs roughly 21 euros.
This means that Qt can reduce hardware costs by over 53 percent.
Even if HAM offset the SoC costs against the costs of the commercial Qt license, HAM would have to pay millions of euros more for a Web than for a Qt solution. And, HAM would have no way to scale down the Web solution to mid-range and low-end appliances.