Zenly is built on top of the ZenEngine, an infrastructure that required 3 years of failure in location.
Several thousand hours of R&D later it offers unique competitive advantages:
Realtime: you can literally see you friends walking around on a continuous basis.
Precise: it uses the maximum precision a phone can offer, contrarily to 80% of the other locators.
Battery friendly: it consumes 5 to 10 times less battery than every other tracker in the world.
Cross-platform: it works as perfectly on iOS as on Android.
Simply put, it's the world's best locator.