Trying to get 20 couples to build a tiny shared habit. Will this stick?

I’m running a small validation experiment and trying to measure behaviour, not just signups.

I’ve been in a long-term relationship for years. As life got busier, our date nights were happening but the details blurred and disappeared into camera rolls.

We started sending ourselves a short “memory” after each one in a separate Signal chat (date + note + optional photo). It surprisingly made us more intentional.

So I built a simple private web app that does exactly that: a shared timeline for couples to log date nights in seconds.

No social feed.
No public sharing.
Just a quiet shared history.

The experiment:

Can I get 20 real couples to use this within 30 days?
And will at least 30% of them add more than one entry?

If you’re in a long-term relationship, I’d love blunt feedback, especially around whether this is an enjoyable app to use that could realistically stick.

Here’s the link:
https://www.datenightmemories.app/