We are the only website on the internet providing Free Find My iPhone check tool. We deliver the result automatically within a minute and you have 5 free checks / day. The limitation is about to avoid spammy requests.
It's important to check Find My iPhone (Activation Lock status) before buying an Apple device online (like from eBay).
This tool is also great for you if you're the seller. You can send our website link as a proof of Activation Lock Status to your buyers. Example: http://iphonetools.io/check/find-my-iphone/000000000000000