【New Standard for SNS Operation】Just 30 Seconds. AI Impersonates You for Batch Scheduled Posting to 6 SNS Platforms. Free App "Katteni" Officially Released
Sunshore Inc. has officially released "Katteni," a free AI-powered SNS management app that learns personal posting styles and allows batch scheduled posting to multiple SNS platforms. Paid plans start from 980 yen per month, offering industry-leading cost performance as an SNS operation efficiency tool.
📋 Article Processing Timeline
- 📰 Published: May 7, 2026 at 22:50
- 🔍 Collected: May 7, 2026 at 14:31
- 🤖 AI Analyzed: May 7, 2026 at 14:58 (27 min after Collected)
Sunshore Inc. (Headquarters: Yokohama City, Kanagawa Prefecture; Representative Director: Yuri Katsumura) officially released "Katteni," an SNS operation app, on May 7, 2026. This app, which generates captions using AI simply by uploading images and videos, and allows batch scheduled posting to multiple SNS platforms, has been used by over 60 early adopters, primarily influencers and business owners, since its beta release in April 2026. Paid plans are also available starting today. The basic version is free, and paid plans start from 980 yen (tax included) per month. Compared to major domestic SNS management tools, it achieves industry-leading cost performance.
▼Try for Free▼
https://sunshore.jp/katteni
1. Voices from early users
"Katteni is too convenient!"
"Posting time dramatically reduced. Utilizing batch scheduled posting, AI script generation, and analysis advice."
"It's great that it does the thinking for me, as coming up with captions is a hassle!"
"Eliminates the effort of writing captions. Utilizing AI script generation, AI chat consultation, and analysis advice."
"A management tool that I wish existed but didn't!"
"Utilizing post schedule management and AI writer functions. Posting time dramatically reduced."
"Among all the scheduled posting and analysis services I've used, this is the easiest to view. Thank you for creating exactly the features I wanted!"
2. Background of development: The reality of the SNS operation market seen during a scooter trip around Japan
Our representative, Katsumura, embarked on a scooter trip around Japan after retiring from corporate life. While talking directly with owners of restaurants, ryokans, and beauty salons nationwide, she continuously heard a common sentiment: "We want to attract customers through SNS, but we don't have the money to pay professionals, nor the time to do it ourselves."
At the same time, Katsumura herself, while posting her travel records on SNS daily (gaining 10,000 followers in six months and being featured on Yahoo! News), keenly felt the burden of the tedious tasks of creating captions and posting individually to each SNS. From the conviction that "if this work could be automated, creators could focus on what they truly need to do," the development of Katteni began.
3. What has changed in the official version
Based on user feedback from the beta version, functions and stability have been improved, and the official version is now available starting today. Simultaneously, paid plans that allow access to more advanced features are also being offered.
4. Three features of Katteni
① [Patent Pending] AI that becomes "you" the more you use it
Unlike general AI tools, there's no need to input prompts every time. The more you use it, the more the AI automatically learns the user's tone of voice, emoji usage, and the overall world view of their writing. It continuously grows as your dedicated AI writer. This "Nurturing AI" function is patent pending.
② Batch scheduled posting to multiple SNS in 30 seconds
Supports Instagram, TikTok, YouTube Shorts, Threads, X, and Facebook. Simply upload your content to complete caption generation, calendar scheduling, and insight analysis. Compatible with both smartphones and PCs.
③ Analysis advice from AI that understands you
The more posting achievements accumulate, the more the AI grasps the trends of your account. It advises you in a personalized manner on "which posts are performing well" and "what you should post next." Furthermore, with an analysis view that allows cross-platform insight checking for multiple SNS on a single screen, you can grasp the overall picture of your operations at a glance.
▼Try for Free▼
https://sunshore.jp/katteni
【Service Overview】
Service Name: Katteni
Availability: iOS App (App Store), PC (Browser version)
*Android app (Google Play) scheduled for release
Pricing: Basically free (Paid plans from 980 yen per month, industry-leading cost performance)
Official Website: https://sunshore.jp/katteni
【Company Profile】
Company Name: Sunshore Inc.
Established: 2025 Representative Director: Yuri Katsumura
Headquarters: Yokohama City, Kanagawa Prefecture
Business Description: Development and operation of SNS automation app "Katteni" URL: https://sunshore.jp
【Inquiries regarding this release】
Sunshore Inc. Public Relations Email: info@sunshore.jp URL: https://sunshore.jp
▼Try for Free▼
https://sunshore.jp/katteni
1. Voices from early users
"Katteni is too convenient!"
"Posting time dramatically reduced. Utilizing batch scheduled posting, AI script generation, and analysis advice."
"It's great that it does the thinking for me, as coming up with captions is a hassle!"
"Eliminates the effort of writing captions. Utilizing AI script generation, AI chat consultation, and analysis advice."
"A management tool that I wish existed but didn't!"
"Utilizing post schedule management and AI writer functions. Posting time dramatically reduced."
"Among all the scheduled posting and analysis services I've used, this is the easiest to view. Thank you for creating exactly the features I wanted!"
2. Background of development: The reality of the SNS operation market seen during a scooter trip around Japan
Our representative, Katsumura, embarked on a scooter trip around Japan after retiring from corporate life. While talking directly with owners of restaurants, ryokans, and beauty salons nationwide, she continuously heard a common sentiment: "We want to attract customers through SNS, but we don't have the money to pay professionals, nor the time to do it ourselves."
At the same time, Katsumura herself, while posting her travel records on SNS daily (gaining 10,000 followers in six months and being featured on Yahoo! News), keenly felt the burden of the tedious tasks of creating captions and posting individually to each SNS. From the conviction that "if this work could be automated, creators could focus on what they truly need to do," the development of Katteni began.
3. What has changed in the official version
Based on user feedback from the beta version, functions and stability have been improved, and the official version is now available starting today. Simultaneously, paid plans that allow access to more advanced features are also being offered.
4. Three features of Katteni
① [Patent Pending] AI that becomes "you" the more you use it
Unlike general AI tools, there's no need to input prompts every time. The more you use it, the more the AI automatically learns the user's tone of voice, emoji usage, and the overall world view of their writing. It continuously grows as your dedicated AI writer. This "Nurturing AI" function is patent pending.
② Batch scheduled posting to multiple SNS in 30 seconds
Supports Instagram, TikTok, YouTube Shorts, Threads, X, and Facebook. Simply upload your content to complete caption generation, calendar scheduling, and insight analysis. Compatible with both smartphones and PCs.
③ Analysis advice from AI that understands you
The more posting achievements accumulate, the more the AI grasps the trends of your account. It advises you in a personalized manner on "which posts are performing well" and "what you should post next." Furthermore, with an analysis view that allows cross-platform insight checking for multiple SNS on a single screen, you can grasp the overall picture of your operations at a glance.
▼Try for Free▼
https://sunshore.jp/katteni
【Service Overview】
Service Name: Katteni
Availability: iOS App (App Store), PC (Browser version)
*Android app (Google Play) scheduled for release
Pricing: Basically free (Paid plans from 980 yen per month, industry-leading cost performance)
Official Website: https://sunshore.jp/katteni
【Company Profile】
Company Name: Sunshore Inc.
Established: 2025 Representative Director: Yuri Katsumura
Headquarters: Yokohama City, Kanagawa Prefecture
Business Description: Development and operation of SNS automation app "Katteni" URL: https://sunshore.jp
【Inquiries regarding this release】
Sunshore Inc. Public Relations Email: info@sunshore.jp URL: https://sunshore.jp