P1523 · A good word. At the right time.

A little help, right here.

P1523 is in development. The App Store release and downloadable Mac companion are not available yet. This page will link to the verified downloads when they are ready.

What you will need

• An iPhone with iOS 26 or later and a Mac with macOS 26 or later.
• Apple Messages signed in on your Mac, with the conversations you want to organize.
• The P1523 Mac companion running nearby and local-network access on both devices.
• Full Disk Access for P1523 Mac to read Messages. This permission is managed by macOS.

Apple Intelligence writing requires a supported device and enabled Apple Intelligence. Otherwise, P1523 provides editable starter drafts. No paid AI API is required.

Pairing and refresh

1. Open P1523 Mac and follow the Full Disk Access instructions, then quit and reopen it.
2. Open Settings → Messages & devices and start sharing.
3. Copy the pairing key directly into P1523 on your iPhone. Keep it private.
4. Allow Local Network access and keep both apps open nearby for the first sync.

The Mac checks for changes while running. iOS may suspend nearby connections when the app is in the background, so refreshes and new-message notifications are not guaranteed then. Return to the app to reconnect.

Names and photos

Allow Contacts access on the device where you want names and photos shown. Check that the phone number or email in the conversation matches the contact. Photos must exist in that device’s contact record.

Google Calendar

Add your Google account to Apple Calendar in system settings, then grant P1523 calendar access and choose the relevant calendars. P1523 uses your device calendars; a separate Google sign-in is not currently built in.

Sending and plans

Review and edit your draft before opening Apple’s message composer. You must confirm Send there. Batch replies are reviewed individually. Suggested times should be checked before sending; events are added only after confirmation.

Purchases and subscriptions

No paid purchases or trials are currently available. At launch, eligible annual subscribers are planned to receive a 3-day trial followed by $59.99 USD per year. A limited $149.99 USD lifetime option is planned. Final prices and eligibility appear in the App Store. Apple subscriptions can be managed in Settings → your name → Subscriptions.

Contact support

Email [email protected] with your device model, system version, and a short description. Please omit private messages, pairing keys, and verification codes. You can also ask about release availability here; there is no automatic mailing-list enrollment.