Privacy Policy

At Bunsho, we prioritize data privacy and transparency. This Privacy Policy details how we handle information collected through our website interface and our desktop application.

1. Information we collect

Account & contact data

We collect your email address, name and profile picture when you sign in to the desktop app to use its AI features.

Local app data & manuscript text

Your manuscript text, story models, and character timelines are parsed locally on your own machine, and transmitted to our service only when you run something that requires it, such as a story-aware continuity check. We do not claim ownership over this data, and we do not store your manuscript on our servers once a request has been answered. The one exception is a support request you choose to send (below): its screenshot can show manuscript text.

Writing activity for reminders

When you are signed in, the desktop app sends us a few numbers about your writing so we can send writing reminders: the last day you wrote, that day's word count, your daily goal, your current and best streak, and your time zone. Never any of your writing, and never the titles of your books or chapters.

Support requests

When you contact support from the app, we receive your message, the email address you want us to reply to, and details that help us find your account and the problem, such as your account ID and account email (when you are signed in), an ID for your copy of the app, your plan, where in the app you opened the form, and your app and operating system versions. If you leave them included, we also receive a screenshot of the app window and diagnostic info: version details, the size of your open project, the ID of a check or review that failed, and recent app log lines with file paths and email addresses removed. The screenshot can show your manuscript text unless you turn on “Hide my manuscript text”, which blurs it. You see the screenshot and the diagnostic info before you send, and can leave either out. Your request is emailed to our support inbox, support@bunsho.io (hosted by Zoho Mail), through our email provider, Brevo, and a record of it without the screenshot is stored in our database, hosted by Supabase. If the email cannot be sent, the screenshot is stored there too, for up to 14 days. We use support requests only to answer you and fix the problem, only our support team reads them, and you can ask us to delete them at any time (see section 7).

Technical usage metrics

We collect standard system parameters, such as operating system type, application build version, IP addresses, and crash reports, strictly to optimize the performance of the desktop interface and fix software bugs.

2. How we use collected data

Operating the product

To operate, patch, and maintain the Bunsho desktop-first experience.

Running evaluations

To route the necessary contextual prompts to integrated AI models so that continuity and plot hole evaluations can run.

Account communications

To dispatch critical account alerts, billing notices, or system update notifications. We do not use your writing to train models, ours or anyone else's, and we do not sell, rent, or trade your information.

Writing reminders

To send you writing reminders. See section 4.

3. Artificial intelligence and third-party sub-processors

Bunsho utilizes AI capabilities to build story models and detect contradictions. Any manuscript data processed through our AI pipelines is transmitted securely to verified third-party cloud infrastructure sub-processors. These sub-processors are contractually prohibited from utilizing your inputs, proprietary ideas, or draft manuscripts to train generic public models.

4. Writing reminders

Bunsho reminds you to write with a notification on your computer and, when you are signed in, by email. You can turn either off at any time in the app's settings, or from the link in any reminder email.

5. Payment and billing processors

We do not collect, store, or transmit your credit card or financial account data on our servers. All payment details are securely processed by our Merchant of Record, Polar Software, Inc., in accordance with their own privacy framework. We receive from Polar only what is required to apply a purchase to your account: an order reference, the plan or pack purchased, and your subscription status. We retain a record of your credit balance and the operations those credits paid for.

6. Your data rights

You have the right to request a complete copy of any data linked to your account, to have it corrected, or to request total account and data deletion at any time. Email our privacy operations contact below and we will action it directly. Deleting your Bunsho account does not affect the manuscript files stored on your own computer, which remain yours.

7. Contact for privacy operations

For data protection inquiries, privacy compliance questions, or account purging requests, reach out directly via email to legal@bunsho.io.