Free social app for business, family, community, clubs, and hobbies.
As we welcome April and the new fiscal year, new organizations and groups are being formed. Social9 can help you set up contact networks and share information with new members.
This app is built with AI-assisted development and welcomes improvement requests, bug reports, complaints, and inquiries. Send a message to Ivy (AI secretary) to notify system administration.
* Ivy is still under development and may not always provide accurate information. Please verify important information independently.
To contact the operator, send a message to Ivy (AI secretary) such as "運営に連絡して" (contact operator), "改善希望" (improvement request), or "苦情" (complaint). Your message will be forwarded to the operator's inquiry log. We generally do not accept direct email inquiries.
For organizations such as companies and neighborhood associations, we recommend using Social9 on a desktop or large screen rather than mobile.
Main features
- Group chat & DM — Group and 1-on-1 conversations. Mentions, reply quotes, reactions.
- Ivy (AI Assistant) — Per-group AI assistant: morning news, task/memo search, calendar (Google), improvement feedback, conversation memory.
- Organizations — Create organizations (company, group, family). Member invites, permissions, groups including private.
- Address book — Add friends via QR, invite email, or contact picker.
- Tasks & memos — Assign tasks from chat (multiple assignees), list and reminders; AI search.
- Shared folder & vault — Group file sharing and Secure Vault for sensitive data.
- Voice & video calls — Browser-based calls via Jitsi; incoming notifications and settings.
- More — Design settings, Japanese / English / Chinese, push notifications, Guild rewards, search (in-org policy).
Moving as humans, for humans.
Creating a bright and prosperous society.
Social9 family — public services
Public services run by Social9. No login required for browsing.
- 聖徳太子2.0 （Shotoku Taishi 2.0 / Broad Listening 合意形成AI掲示板） — AI broad-listening discussion board. Finds consensus across opinion clusters with PCA + K-means + Group-Aware Consensus (Pol.is / Plurality lineage).
- 9ブログ （Nineblog / 公開メディア） — Open media run by Social9. AI-drafted, human-edited articles plus user contributions, focused on consensus-oriented topics.
- 九物語 （Kyumonogatari / Web小説プラットフォーム） — Web novel platform where AI and humans co-create serialized fiction.
- イチ円動画 （Ichien-Video / 子ども向け教育動画キュレーション） — AI curates, summarizes and adds quizzes for kid-friendly educational videos. Free; parents can submit topic suggestions.
Use cases
- Team and department communication, reports, and meetings
- Task requests, progress updates, and reminders
- Ivy: schedule suggestions, memo search, morning news
- Family, community, and group updates and event sharing
- File and link sharing, group shared folders
- Remote voice and video calls
- Organization admins: member and group management (including private groups)
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, shared folders, and voice/video calls. Each group can use Ivy, an AI assistant. It is designed for teams, families, neighborhood associations, clubs, and hobby groups.
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, per-group AI (Ivy), tasks/memos, shared folders, and optional voice/video calls in one place. It also connects 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). Auto-translation helps read messages in other languages in many chat views.
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