Meet the MODEL 3: a smart tankless electric water heater that produces up to 41F rise in temperature at a 4.0 GPM. It has no coils and there is no corrosion to deal with. It helps you get more hot water and reduce your cost at the same time. The companion app lets you control the amount of water used in the shower and set the right temperature.
You will also be able to track energy used and water/energy savings. This project is now active on Kickstarter.