www.jwaves.io is described as 'is online free service for Wi-Fi and DECT predictive surveys/ simulations. You can generate professional reports with RSSI heatmaps, floorplans, access-points'. There are six alternatives to www.jwaves.io, not only websites but also apps for Windows and Mac. The best alternative is NetSpot, which is free. Other great sites and apps similar to www.jwaves.io are Xirrus wifi designer (Free), NetSurveyor (Free), Ekahau HeatMapper (Freemium) and Acrylic WiFi Heatmaps (Paid).
Designing a Wi-Fi network that meets user demands in your unique environment is easy. Use this intuitive, predictive heat-map tool to develop your predictive design to implement a robust Wi-Fi network.