Total visits 150,724 visits
Login
Login with GoogleGoogle login may be blocked in in-app browsers. Please open social9.jp in Chrome or Safari to log in.
Sign up
For organization admins and team leaders
🏢 Create organization & groupSocial9（ソーシャルナイン）の使い方を気軽に体験できます。
Free social app for teams, families, and communities
Group chat, tasks, files, and calls in one place. Ivy, your AI secretary, helps with search, scheduling, and feedback—per group or in a dedicated secretary chat.
Main features
- Group chat & DM — Text, images, files, and video. Mentions, reply quotes, TO targeting, reactions, and YouTube link previews. Shared media in conversations.
- Ivy (AI secretary) — In each group or a dedicated secretary chat: morning news, task/memo/log search, Google Calendar, shared-folder reading, conversation memory, and auto-reply. Also receives improvement requests, bug reports, complaints, and inquiries for the operator.
- Organizations — Companies, groups, and families. Member invites (email, initial password, CSV bulk), groups, usage restrictions, and org admin UI in Japanese / English / Chinese.
- Personal address book — Add friends via QR or invite email. Match device contacts or Excel/CSV to find members and invite to groups.
- Tasks & memos — Create tasks from chat (multiple assignees), dedicated task/memo pages, reminders, and right-panel integration.
- Shared folders & vault — Per-group file storage. Secure Vault protects sensitive notes with WebAuthn.
- Voice & video calls — Browser calls via Jitsi. Incoming notifications and call settings.
- Languages & translation — UI in Japanese, English, and Chinese. Manual and automatic message translation in chat.
- More — PWA (add to home screen), push notifications, Guild rewards, design settings, and in-organization search policies.
Use cases
- Team and department updates, reports, and coordination
- Task requests and progress tracking (chat → tasks page)
- Ask Ivy to summarize logs, search tasks/memoes, or add calendar events
- Family, neighborhood, club, and hobby group announcements
- File sharing via group shared folders
- Remote voice and video meetings
- Org admins: members, groups, permissions, and usage limits
Moving as humans, for humans.
Creating a bright and prosperous society.
Social9 family — public services
Public services run by Social9. Browsing does not require login.
- 聖徳太子2.0 （Shotoku Taishi 2.0 / Broad Listening 合意形成AI掲示板） — AI broad-listening board that visualizes consensus across opinion groups (PCA + K-means + Group-Aware Consensus).
- 9ブログ （Nineblog / 公開メディア） — Public media: AI-drafted, human-edited articles and registered user posts.
- 九物語 （Kyumonogatari / Web小説） — Web novel platform where AI and humans co-create serialized fiction. Free to read without login.
- イチ円動画 （Ichien-Video / 子ども向け教育動画） — AI-curated kid-friendly educational videos with summaries and quizzes. Parents can suggest topics.
Social9 is actively developed with AI assistance. Send improvement requests, bug reports, complaints, or inquiries to Ivy (AI secretary)—for example “contact operator” or “improvement request”. Messages are recorded for the operator. We generally do not accept direct email inquiries.
Ivy is still evolving. Do not rely on it alone for medical, legal, financial, or other critical decisions—verify important information yourself.
For company or neighborhood-association operations, we recommend a desktop or large screen rather than mobile only.
FAQ
What is Social9?
Social9 (Social Nine / ソーシャルナイン) is a free social app for group chat, DMs, tasks, memos, shared folders, a secure vault, and browser voice/video calls. Ivy, the AI secretary, works in each group or in a dedicated secretary chat. UI and org admin are available in Japanese, English, and Chinese. Designed for teams, families, neighborhood associations, clubs, and hobby groups.
What is Ivy (AI secretary)?
Ivy helps with morning news, searching tasks/memos/logs, Google Calendar, reading shared folders, conversation memory, and auto-reply. You can also send improvement requests, bug reports, complaints, or inquiries to the operator through Ivy (e.g. “contact operator”). Ivy is still evolving—verify important decisions yourself.
How do I contact the operator or send feedback?
Send a message to Ivy in chat, for example “contact operator”, “improvement request”, or “bug report”. Your message is recorded for the operator. We generally do not accept direct email inquiries.
Is Social9 free?
Yes. Creating an account and using group chat, tasks, memos, and basic features is free. Public sister services (Shotoku Taishi 2.0, 9blog, Kyumonogatari, Ichien-Video) can also be browsed without login.
How do I sign up?
Open the registration page, enter your email or phone number, verify with a one-time code (OTP), and set a password. You can also sign in with Google if enabled. After registration, create or join an organization and start chatting.
How is Social9 different from LINE or Slack?
Social9 combines messaging with organization management (CSV bulk invites, usage limits), per-group or dedicated Ivy chat, tasks/memos from chat, shared folders, WebAuthn vault, translation, PWA, and optional Jitsi calls in one place. It also links to public consensus and media apps (Shotoku 2.0, 9blog, etc.) operated by the same team.
Is my chat data private?
Chat rooms require login and are not listed on public search engines. Access is limited to members you invite. Please do not share passwords and review our Terms of Service and Privacy Policy before use.
Which languages are supported?
The app UI supports Japanese, English, and Chinese (Simplified). Organization admin screens also support these languages. Manual and automatic message translation is available in many chat views.