ai stock picking apps that are actually useful for research, any real favorites?

i’m trying to sort out which ai stock picking apps are worth keeping after the first week. i don’t want hot tips or copy trading, just something that speeds up research, makes filings less painful, and stays read only since i’m not linking a broker. web or ios both fine. if you’ve used one long enough to become part of your routine, which app and what made it stick? also curious about paywalls, data transparency, and any privacy weirdness.