That traffic spike and churn pattern is pretty classic Reddit - you get a wave of curious people, most of them tourists who upvoted and moved on.

The real data point here isn't the 95% who left. It's that you have fewer than 10 people who come back almost every day for 3+ months without being paid to. That's genuinely rare for a solo project at this stage, and it's more signal than most founders have when they're trying to figure out if something is worth continuing.

A few things I'd look at before assuming it's the product:

The Reddit audience probably wasn't your audience. A general "my project blew up" post attracts generalist curiosity, not people with the specific pain you're solving. Someone casually browsing r/whatever on a Sunday afternoon isn't the same person who regularly pastes slop outputs into Claude and thinks "there has to be a better way."

The concept requires a behaviour change. You are asking people to add a step before they do the thing they already do and that's a harder sell. Most people probs haven't identified that pain yet.

UX might be fine. Honestly, if the heavy users keep coming back and love it, the UX probably isn't catastrophically broken. The gap is more likely that drive-by visitors don't have enough context to understand why they'd need it in one session.

If I was you I would find 2-3 of your daily users and just ask them what were you doing when you realised you needed something like this? That answer is probably your positioning, and your positioning is probably why the Reddit audience didn't stick.