I get the reason for there being Ads in the sync app. I don't have the funds to pay for ultra and that's also fine.
But what I find concerning is the type of ads I see.
I live in Germany for clarification and most of what I see are websites acting like news sites (right leaning at times). When I accidentally tap on them my browser immediately blocks the website for unsafe practices on their end.
Now I really don't mind the ads in apps if it's the usual app ad, random products or Amazon type of things. But I hate it when every ad is a boomer ass clickbait ad about how solar energy is definitely worse than anything else.
This is my main complaint about sync right now and it might push me to stop using it again as the ads are also very frequent...
The options are ask for improvements, and then learn to tolerate the issue, mitigate it, or find an alternative, and an alternative isn't a bad choice since that doesn't necessarily mean it is a permanent choice. I'm sure that if the Sync developer can improve the situation, they will.