
Syn9
Share schedules and notes
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Free
In-App Purchases
Rating summary
About
Every memory starts with a plan. Syn9 lets you make plans, share them, and keep the photos — with family and friends. Choose who sees each schedule and note: family plans for family, weekend plans for friends.
Schedules
Choose who to share each event with — family schedules for family, friend plans for friends. Each event gets its own chat so you can coordinate without losing context. Reminders and recurring events keep nothing slipping through.
Notes
Share shopping lists, trip plans, and more — with whoever you choose. Edit lists together in real time so no one's grocery list is out of sync. Lock a note to require Face ID or your passcode before it opens on your device.
Chat
Tap any schedule or note to open its chat — never lose the thread. Group with friends-of-friends without exchanging contacts. Reactions, pins, and unread badges keep things organized.
Albums
Create an album from any schedule, note, or chat, and collect everyone's photos and videos in one place. The plan becomes a memory you can look back on.
Friends
Add friends easily via QR code or a shareable link. Set your go-to share list in advance to save time every time.
Push Notifications
Get notified instantly when a schedule, note, or message is shared with you. Never miss what matters.
Koe (AI assistant)
- Say "dinner tomorrow at 7" — Koe creates the schedule
- "Share with my crew" — Koe knows your friends, groups, and the nicknames you use
- Ask anything — Koe searches the web too
Make everyday life with family and friends smoother and more fun. Give Syn9 a try.
Some features require a Syn9 Plus or Max subscription: photo and video attachments, albums, recurring events, reminders, default share lists, note folders, note lock, and monthly Koe usage.
Terms of Use & Privacy Policy:
https://syn9.jp/en/terms-of-service
https://syn9.jp/en/privacy-policy
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What's New in Syn9
1.7.1
November 4, 2026
• Fixed the chat jumping when loading earlier messages • Fixed older chat messages sometimes not showing after upgrading your plan • Other minor improvements and bug fixes
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Subscriptions & In-App Purchases
Plus
All core features and Koe AI included.
$3.001 Month





