ByeBye v4 is an Android application developed by Hurricane Electric LLC that helps track the rate of IPv4 allocations and IPv6 adoption. With IPv4 addresses running out, this app is a handy tool for network administrators and anyone interested in internet infrastructure. The app provides an easy-to-use interface to track the depletion of IPv4 address pools allocated to regional registries.

The app estimates the rate of IPv4 address allocation and shows the progress of IPv6 adoption. It is an excellent tool for keeping abreast of the latest developments in internet infrastructure. ByeBye v4 is free to download and use, making it accessible to anyone interested in understanding the technical underpinnings of the internet.