Adguard dns ⠀⠀ 
From there you can make a account and try it out.
I want to compare it to NextDns ⠀⠀ 
,i have read through there privacy policy.
Privacy Policy
- to not collect any personal data (also not the ip)
- They claim data like, of which domains are requested
- Log how often a tracker is blocked
- Things related to dns requests like speed
- They do not share the data with third parties and only uses them for performance analysis
- The only thing that they might share are domains that are reconized as ad, tracking, or malware
- No not share or sell any data directly or indirectly from there users
- The server discards all the data after sending a response (if logging is turned of)
- If not specifically requested by the user no data is logged ( either i am misunderstanding this claim or its straight up wrong) by default nextdns logs everything and keep then stored for three months in the united states server, you have to turn it of in the settings.
- You can choose a different server for logging if u want to
- "What you see is what we have" means you can see and delete every bit of your data
- Have something called edns client subnet that protects from exposing your ip to authoritative dns servers
- They enforce qname minimization Basically reduces the amount of detail needed in a query (for privacy)
Features:
Adguard allows you up to 1000 custom domains that you can block you can use a list.
Nextdns allows you only to block them one by one (no option for list).
Aduguard has 17 blocklist 8 general 6 security 3 other with all together rules of 591568. 13 additional regionals ones
Nextdns has 76 its hard to categorize in those 76 are regional ones in
Both of them can block most social media apps aswell as gaming (parental control)
Only nextdns (nothing more for adguard)
Nextdns has a lot of parental control feature that adguard does not have it also can block bypassing the dns.
A ai that blocks threats
Google safe browsing
Protection for crypto mining
Procetion from attacking your local devices
Block domains less than 30 days old
Block domains full of ads
A lot of other security protection (i dont understand them)
Block tld (.email)
Block child abuse
Privacy nextdns
Lets u block tracker that are operating at the system level from xiaomi, huawei, samsung, alexa, windows, apple, roku, and sonos
Block third party trackers disgusing them self as first party
Lets you route a dns to a different one (didnt try it) but i think u can basically make reddit go to libreddit
Nextdns has a blocklist thats lets u block all google service not sure if adguards has something like that but u can probably just copy and import the list to adguard
Design
Both look clean but i think adguard looks better. Besides that, the blocklist on adguard looks much better and has a better categorzation
Conclusion
Both of them are good ( as for there claims)
One thing i really didnt like is that nextdns claims to not log by default which makes there privacy policy untrustful. (Logging turned on by default)
If we would say that we can trust nextdns basically claming not logging, or selling any data than defentily we should go for nextdns for now.
When using nextdns make sure to turn off logging in the settings
If you dont like them (or trust them) you can go for adguard but you will missing features for privacy and security. I like that adguard makes it pretty clear that they only use anonymoized data and share only ad , tracking or malware domains.
When using adguard you can turn off log dns requests in the account settings but this might me only for you (not sure if they still have logs)
Remember that adguard dns is still in beta.