Privacy Policy

Last updated: October 6, 2026

What KO is

KO is a personal fashion advisor that helps you understand your style through conversation. KO is built by Arium.

What we collect

  • Your name and contact info (phone number via Linq, email via Google sign-in)
  • Photos you send us (outfit photos, product screenshots)
  • Messages you exchange with KO
  • Purchase receipts from Gmail (only if you connect your Gmail — see below)

KO in ChatGPT and other AI assistants

When you use KO inside ChatGPT, Meta Muse, or another AI assistant, KO receives only what the assistant sends to KO's tools: your request, product links or image links you share, and any optional size, budget, or context you include. KO also receives an anonymized user identifier from the platform and your IP address, which we use for rate limiting and abuse prevention. KO cannot see the rest of your ChatGPT or Muse conversation, your ChatGPT account, or your email. The platform's own handling of your conversation is governed by that platform's privacy policy, not KO's.

Connecting your KO account

If you connect your KO account inside an assistant, the assistant can, with your permission, see your digital closet, what KO knows about your style, and save your verdicts so KO keeps learning your style. Verdicts you got before connecting in that same session are saved to your account when you connect. You can disconnect anytime in the assistant's settings. You can also ask us to delete saved data by emailing yujin@ko-fit.app.

Anonymous use

Without connecting your KO account, KO processes your request to answer it. Anonymous requests may be used in aggregate to measure and improve KO's quality, including analytics and quality evaluation. They are not linked to you and contain no account identity. They are never used to train AI models.

Gmail access

If you choose to connect your Gmail, we request read-only access to your email (gmail.readonly). We use this access exclusively to:
  • Scan for order confirmation and shipping notification emails
  • Extract product names, brands, prices, and purchase dates from receipts
  • Build your closet based on what you've bought
We do not:
  • Read personal emails, drafts, or attachments
  • Send emails on your behalf
  • Share your email content with third parties
  • Use Gmail data for advertising or to train generalized AI/ML models
  • Store raw email content — we only store extracted product metadata
You can disconnect Gmail at any time by revoking access in your Google Account settings.

Google Calendar access

If you choose to connect your Google Calendar, we request read-only access (calendar.readonly) with your permission. We use this access exclusively to:
  • Read your upcoming calendar events — title, date/time, and location
  • Suggest outfits for those occasions
We do not:
  • Modify, create, or delete anything on your calendar — access is read-only
  • Retain more than what's needed to generate outfit suggestions
  • Sell your calendar data, use it for advertising, or use it to train generalized AI/ML models
Calendar credentials are encrypted at rest, same as Gmail. You can disconnect Calendar access at any time by revoking access in your Google Account settings.

Gmail and Calendar

KO's use and transfer of information received from Google APIs follows the Google API Services User Data Policy, including the Limited Use requirements. We use Gmail and Calendar data only for user-facing KO features, such as building your closet from receipts and suggesting outfits for upcoming events. We do not transfer that data except as needed to provide or improve those features, comply with law, or protect KO and our users. We do not use Gmail or Calendar data for advertising or to train generalized AI/ML models. Humans do not read Gmail or Calendar data except with your permission, for security or abuse review, to debug or operate the service, or where required by law.

How we use your data

  • To provide personalized style advice through KO
  • To build and maintain your closet (items you own)
  • To remember your preferences and style patterns across conversations
  • To generate outfit suggestions based on your wardrobe
We do not sell your data. We do not use your data for advertising.

AI providers and no-training

KO uses third-party providers only to run the features you use. Our AI model providers (Anthropic, OpenAI, and Google Gemini) process your messages and photos under business terms that do not use your content to train their models. Product-search and image-processing providers receive only what a feature needs; product searches we send are stripped of personal details such as email addresses, phone numbers, street addresses, and body measurements. KO does not sell your content and does not use your messages, photos, closet, Gmail, or Calendar data to train AI models. We also rely on cloud infrastructure providers for hosting, storage, and email delivery; these providers process data only to operate the service.

Affiliate links

Some product links KO shows may be affiliate links that earn KO a commission. This never affects what KO recommends or whether it says to skip something. Links you send KO are never changed.

How we protect your data

  • Data is transmitted over encrypted connections (HTTPS/TLS) between your device, KO, and our service providers.
  • Data is stored on managed cloud infrastructure that encrypts data at rest.
  • Access to user data is restricted to a small number of authorized Arium personnel, only when needed to operate, debug, or improve the service.
  • Gmail data follows Google's Limited Use requirements: read-only scope, used only to extract receipt metadata, never stored as raw email content, and never used for advertising or to train generalized AI/ML models.
  • Photos, messages, and other content you share are used only to power KO's responses and your closet. We do not sell your data, share it with advertisers, or use it to train third-party models.
  • If a security incident affecting your data occurs, we will notify you and any relevant authorities as required by applicable law.
  • You can request deletion of your account and associated data at any time by emailing yujin@ko-fit.app.

Data retention

Your data is retained as long as your account is active. You can request deletion of your data at any time by contacting us.

Contact

For privacy questions or data deletion requests: yujin@ko-fit.app