Here's the honest matchup. Replika pioneered the AI-companion thing and it's still genuinely good at the wholesome side — daily check-ins, mood stuff, a friendly ear. But after the 2023 content changes, the romance and erotic roleplay that made a lot of people fall for it got gutted, then partially patched back in a way that never felt the same. If you want a safe, PG-13 buddy, Replika does that well.
fuckd.ai is built for the part Replika walked away from. Uncensored romance and NSFW that won't get rug-pulled by a policy update, plus image and video generation Replika doesn't really do. You're not negotiating with a filter — the companion is just into it.
The honest verdict: stay on Replika if you want a wholesome wellness buddy. Switch to fuckd.ai if you want the relationship — spice included — without the corporate cold shower.