Cost of Live is described as 'Cost of live is a community-powered cost of living insights website. It is developed in order to see the cost of living data in a more meaningful way and to contribute easily'. There are 2 alternatives to Cost of Live, not only websites but also apps for. The best alternative is Numbeo. It's not free, so if you're looking for a free alternative, you could try The Earth Awaits.
Numbeo is the world’s largest database of user contributed data about cities and countries worldwide. Numbeo provides current and timely information on world living conditions including cost of living, housing indicators, health care, traffic, crime and pollution.
The Earth Awaits is a tool for long-term travelers, students taking a gap year, retirees, and anyone else with an irrepressible wanderlust. By providing just a few simple pieces of information, you can find a city that matches your lifestyle and budget.