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Set up Spool.

Spool works best on your iPhone and your Mac: jot on whichever is closer, and it comes back on the other. Start with the one you're holding. It takes about two minutes each.

iCloudSign in to the same Apple ID on both devices. That's how your thoughts sync.
KeyYour invite email has a key. Paste it in Settings when Spool asks.
VersionsiOS 18 or later, macOS 15 or later.

iPhone

Install TestFlight from the App Store. It's Apple's app for beta testing.
Open the invite link below on your iPhone and tap Accept, then Install.
Open Spool, paste your key, and write your first thought.

Mac

Download Spool and open the zip.
Drag Spool into your Applications folder, then open it.
Paste your key, and allow Calendar and Accessibility when asked. That's how it knows which meeting and app a thought came from.

Stuck, or found a bug? Reply to your invite email. Every note gets read.