Have you ever wondered if your ISP is slowing down certain traffic relative to others? Unfortunately, mobile operating systems and carriers currently give you little or no way to tell if this is the case. In fact, in the US it is currently legal for mobile carriers to block, shape or modify nearly any kind of network traffic. With Replay, we give you a way to test if this is happening to your traffic.

Replay uses your device to exchange traffic recorded from real, popular apps. It does this in a way that allows ISPs to shape your traffic, then repeats the test using a VPN tunnel, which hides the traffic content from ISPs. Our hypothesis is that traffic in a VPN tunnel will not see application-specific shaping, but traffic outside the VPN tunnel will see it. We repeat these tests several times to rule out noise from bad network conditions, and tell you at the end whether your ISP is differentiating against traffic.

Replay currently works for Android (4.0+). We are currently in private beta. We will post a link here when it is ready.

If you already have been invited to test our software, click on the link for your device below to find instructions for setting up Replay.
Install on Android