Personal build · 2026

Same Page

A note that looks and feels like the iPhone Notes app, with one difference: two people can open it at once. You both see the same checklist, and items tick off in front of you.

Shared in real time Link plus PIN No accounts
‹ Notes Live
Camping list
Edited today at 6:14 PM
Tent and stakes
Sleeping bags
Cooler and ice
Bug spray
Marshmallows

Built for the texts that go "did you grab the cooler?" back and forth all afternoon. One shared list, and you both just watch it fill in.

What it does

The Notes app, but shared

It keeps the part you already know, the plain note with a checklist, and adds the one thing it never had: someone else editing it with you.

Feature 01

Looks like the app you know

A list of notes, a big title, and a body where text and tappable checklist items live side by side. Tap a line to turn it into a checkbox, tap the circle to mark it done. Nothing new to learn.

  • Mix typed notes and checklist items in the same note
  • Tap to complete, with the familiar strikethrough
  • Save it to your home screen and it opens full screen
‹ Notes
Groceries
Edited today at 5:02 PM

For the lasagna and Sunday breakfast.

Ricotta
Ground beef
Eggs and bacon
Coffee
Feature 02

Share with a link and a PIN

Tap Share on any note and it hands you a link and a four digit PIN. Send both however you like. The other person opens the link, types the PIN, and the note drops into their own list. No sign up, no app to install.

  • The link alone opens nothing, the PIN is what unlocks it
  • Works for anyone you share with, on any phone
  • Each note keeps its own link and PIN
Share this note

Send the link and the PIN. Without the PIN, the link opens nothing.

oliviakeiter.com/same-page-app/#join=a7f3...
PIN
4391
Copy link and PIN
Feature 03

You both see it happen

While the note is open, a small Live dot tells you it is connected. When the other person checks something off or adds a line, it shows up on your screen on its own. No refresh, no merge button.

  • Checks and edits appear within a second or two
  • Your typing is not interrupted when their changes land
  • Open it on your own phone and laptop and they stay in sync
‹ NotesLive
Party prep
Edited just now
Order the cake
Send invites
Pick up balloons
Make the playlist
How it works

From a note to a shared list in three taps

No account, no app store, no setup. Make a note, share it, and watch it stay in sync.

1

Make a note

Tap the pencil, give it a title, and add your lines. Turn any line into a checklist item with one tap.

2

Share the link and PIN

Tap Share, then send the link and the four digit PIN to whoever you want editing it with you.

3

Edit together

They open the link, type the PIN, and you are both on the same note. Check things off and watch it update.

Under the hood

Shared, but still locked down

A shared note needs a place to live, so this one has a small backend. The trick was keeping it private without making anyone sign in.

Single-file web app Supabase Postgres Realtime sync PIN gated access Row level security Fraunces + Inter No accounts

The notes table is sealed off. Nothing reads or writes it directly. Every action goes through a small set of database functions that check the note's PIN first, so the link by itself is useless without it. Live updates ride a lightweight signal that only ever says "this note changed," never the contents, and each phone then re-fetches through that same PIN check. Your phone remembers which notes are yours, the shared text lives in the database, and there is no account to create or password to forget. It is the Notes app I wished existed every time a grocery run turned into a string of texts.

Try it

Get on the same page

Open it, make a list, and share it with someone. Then watch them check things off without saying a word.

Open the app