I’ve been using servers spun up by this for two years now. Worth it for the dns blocking abilities alone. Made phone browsing tolerable again. Thanks!!
If you want to point Android/iOS to a custom DoH/DoT resolver, https://getintra.org (Android) does DoH whilst Nebulo (iOS and Android) [2] does DoT. Setting up DoH/DoT resolvers (say, using NLNet's Unbound) might be cheaper than a full fledged VPN?
[0] https://apps.apple.com/us/app/dnscloak-secure-dns-client/id1...