I'm not understanding the difference between this and webgap.io which seems a lot cheaper for same service. I have actually tried webgap.io and it offered modes

I'm not understanding the difference between this and webgap.io which seems a lot cheaper for same service. I have actually tried webgap.io and it offered modest but noticeable improvement in page load speed for sites in US. FTR I live in rural Hongkong(there is such a thing) with line speed avg less than 12 Mbps.