DNS filtering on iPhone means checking domain requests before the device connects to them. fogu uses DNS filtering on iPhone and iPad to block many ad, tracker, malware, and phishing endpoints, and it also uses DNS-based controls to work around some provider-specific DNS restrictions.
Why does DNS filtering matter on iOS?
It helps enforce blocking at device level, which is useful when apps and browsers all make their own network requests. Instead of relying on page-level cosmetic hiding, DNS filtering can stop many unwanted domains before content is loaded.
What does fogu let you control?
fogu includes its own rule handling plus custom allow rules, block rules, and blocklist import by URL. That makes DNS filtering more flexible when a site needs an exception or when you want to add your own sources.
Does DNS filtering replace every VPN use case?
No. DNS filtering is one part of the product. fogu also offers a privacy-focused VPN with 7+ global locations and protocol choice including Shadowsocks, WireGuard, VLESS TLS, and VLESS Reality, so users can combine filtering with connection routing when needed.
For the broad product overview, visit the homepage. If you want to compare DNS filtering and other iPhone blocking approaches, use compare. For troubleshooting and practical limits, read the FAQ.