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Privacy Policy

Last updated 22 September 2026

The short version: your artwork and your stories are yours. We do not train models on them, we do not sell them, and we do not hand them to anyone who would. The rest of this page is the specific, checkable version of that sentence.

Who we are

MangaForge is operated by Mangaforge Pvt Ltd, a company registered in India. For anything in this policy, including requests about your data, write to [email protected]. Our registered postal address is available on request.

What we collect

If you join the waitlist

  • Your email address.
  • Your language preference, so we write to you in English or Japanese.
  • Optionally, what tool you use today, if you choose to tell us. This shapes what we build.
  • A record of the consent you gave: the exact wording you agreed to, the time, and the IP address the request came from. We keep this because consent is only meaningful if it can be proven, and because Japanese law requires us to be able to show it.

If you use the studio

  • Your account email and display name.
  • The work you create: stories, scene cards, storyboards, pages and artwork. We store this so the product functions. We do not read it, mine it, or use it to build anything.
  • Technical diagnostics when something breaks: error messages, browser and device type. These help us fix faults and nothing else.

What we never do

We do not use your work to train, fine-tune, evaluate or benchmark any machine learning model. We do not license, sell or otherwise provide it to any third party for that purpose. This is not a preference we may revisit. It is a term of the agreement between us, stated again in our Terms of Service.

If that ever changes, it would apply only to work created after the change, only with your explicit opt-in, and we would tell you plainly rather than by amending a document quietly.

What the AI features send, and where

MangaForge has no image generation. Nothing draws on your behalf. There is one feature that uses a language model: when you stage a storyboard page, the written scene is sent to Google’s Gemini API, which returns a suggested shot list, and a deterministic renderer places the panels. Specifically:

  • What is sent: the text of that scene, which may include the scene title, location, time of day, action, emotional tone, hook, the names you gave your characters, and your dialogue lines, together with the panel dimensions of the page.
  • What is never sent: your artwork. No image you draw or upload is sent to any model, at any time, for any reason.
  • Training: we use the paid Gemini API tier, under which Google does not use submitted content to train its models.
  • Optional: the feature is not required. If it is unavailable the app falls back to deterministic rules and the page is still composed.

Who processes data on our behalf

We keep this list short on purpose, and we will update it here when it changes.

  • Supabase — database, authentication and file storage. This is where your account and your work live.
  • Cloudflare — content delivery, security, bot protection on our forms, and email routing for our own addresses.
  • Google (Gemini API) — the storyboard shot planner described above. Text only.
  • Resend — sending the email you asked us to send.
  • Sentry — error diagnostics, so faults surface before you have to report them.
  • Stripe and Pay.jp — payment processing, if and when you pay us. We never see or store your card details.

How long we keep things

Your work is kept while your account exists, and deleted when you delete it. Waitlist records are kept until you unsubscribe, plus the period we are required to retain proof of consent. Diagnostics are kept for a short period and then discarded.

Your rights

You can ask us for a copy of your data, ask us to correct it, or ask us to delete it. You can withdraw consent to email at any time, using the unsubscribe link in any message or by writing to us. Write to [email protected] and we will respond within 30 days.

Cookies and local storage

We use browser storage to keep you signed in and to remember interface preferences such as your theme. We do not use advertising cookies and we do not run third-party trackers.

Changes to this policy

If we change this policy we will update the date at the top. For any change that materially affects your rights or how your work is handled, we will tell you directly rather than rely on you noticing.