This includes DNS leak prevention — in Force modes, all DNS queries are resolved through the proxy rather than your system/ISP DNS. If you do not trust this app, run a trusted VPN in the background. What data does this app collect? None. All data (proxy passwords, stations, history, settings, favorites) is stored locally on your device.

This is basically the same concept that our multihop page describes where two or more OpenVPN hops are used between different VPN providers so that you don't have to trust any single provider's "no-logging" claim, except instead of OpenVPN this is for DNSCrypt. How to use The fourth section of https://github.com/DNSCrypt/dnscrypt-proxy/wiki/Anonymized-DNS has detailed instructions for using these Anonymized DNS relays.