The love tester calculates* - based on the first names - how well two people fit together. Simply enter the first names of the two persons and click on "calculate" and you will receive the result.
Unlike most other love testers, an algorithm* is applied to the first names, not just a random value. At the same time, this also ensures that the same result always comes out when typing in the same name.
*Of course, no algorithm in the world can calculate how well two people really fit together. The app also does not calculate the real value, but is only for entertainment.