The nerdy milestone app
Hi Product Hunt 👋
Three years into my relationship, I found out, four days late, that
we'd been together for exactly 1000 days. There's no greeting card for
"1004 days, sorry, I was busy."
That bugged me more than it should have. So I did what developers do
with feelings: I wrote software.
seit. takes any date that matters to you. A first date, a wedding, the
day you quit smoking, your kid's birth, and then it just… keeps doing
the arithmetic you'd never do yourself. Every day, in the background, it
asks: is today's number special?
And "special" here is not vibes. It's defined:
· Palindromes - 1001, 121, 1221. Days that read the same forwards
and backwards.
· Repdigits - 111, 222, 333. (German has a word for these:
Schnapszahl. Yes, that's a real, slightly drunk word.)
· Fibonacci - 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377…
Each milestone is the sum of the two before it.
· Round numbers - 100, 500, 1000. Base-10 comfort food.
· Anniversaries and round months - the classics, still here.
· And the strange ones: 1,000,000 minutes together (≈ 694 days).
10,000 hours (≈ 417 days - yes, the Gladwell number; statistically
you are now an expert at this person).
It then nudges you on the morning of, on your Home Screen, your Lock
Screen, and - if the day is big enough - as an Apple Wallet pass.
Free for 3 events. Premium is €2.99/year or €7.99 once.
I'd genuinely love your feedback, the thread is open and I'm here all
day. There are a couple of design decisions below I'm still not sure I
got right.
Kim
Replies
Skyty
The thing I didn't expect when I built this:
Special days are not rare. They're just unnoticed.
Count the specially-shaped numbers between day 0 and day 1000 of any
event:
· 6 round-day milestones (100, 200, 365, 500, 750, 1000)
· 9 repdigits (111, 222 … 999)
· ~19 palindromes (101, 111, 121 … 999)
· 13 Fibonacci numbers
· 12 round months, plus weeks, plus the time-unit oddities
Deduplicate the overlaps and you still land around 80 milestone days
in the first 1000. That's one specially-shaped day roughly every
twelve days.
So seit. isn't manufacturing magic. It's surfacing a structure that
was always in your timeline — you just never had the patience to
compute it. The app has nothing but patience.
Skyty
Full disclosure, because someone will say it otherwise:
Palindromes and repdigits are base-10 artifacts. 1001 is only a palindrome because we happen to have ten fingers.
In base 12 your "special" days are completely different ones.
seit. is unapologetically base-10. It is an app for humans, and humans — most of them — count in tens.
But Fibonacci doesn't care what base you're in. Neither does "1,000,000 seconds." Those are special in every counting system in the universe.
So the app is a mix: some milestones are cultural, some are structural, and I think a milestone app for a relationship should honestly be both.
(If you are a base-12 truther, the thread is right here. I want to
hear it.)
That's cool :D
You could add a custom alarm to alert you when your favourite numbers comes up in any combination.