Privacy policy

Last updated: 28 October 2026

This policy explains what personal data Presupport collects, why, where it is kept and what your rights are. In short: you can use Presupport without an account, and then nothing about you or your models leaves your computer. Only when you create an account, use Pro features or pay do we store what is needed for that.

1. Who is responsible

Presupport is run by ProxyBrewer, based in the Netherlands ("we", "us"). We are the controller of the personal data described here. Questions about privacy: info@proxybrewer.com.

2. Using Presupport without an account

Presupport runs in your browser. Models and projects you open are processed on your own computer and are not uploaded. To work properly, the app stores some things in your browser's own storage (local storage and IndexedDB): your preferences (support presets, printer, raft and navigation settings) and an auto-save of your current work so it can be recovered after a crash. This stays on your device; you can remove it by clearing your browser's site data.

We do not use analytics, advertising trackers or tracking cookies. The promotion shown to free users is a plain link; nothing is loaded from Patreon, MyMiniFactory or Discord until you click it.

When you visit the site, our hosting provider (Cloudflare) necessarily receives technical data such as your IP address and browser type to deliver the pages and protect them against abuse. We do not use this to identify you.

3. What we store when you have an account

Data	Why	Legal basis
Email address and password (the password is stored only as a secure hash)	To create your account, let you sign in and send account emails (confirm address, reset password)	Performance of our agreement with you
Sign-in records (time, IP address, browser) kept by our account provider	Security and preventing abuse	Legitimate interest
If you link Discord: your Discord user ID, username and avatar, and whether you have the Proxy Sage role in the ProxyBrewer Discord server	To sign you in with Discord and give Proxy Sages Pro	Performance of our agreement with you
Your Pro status: where it comes from (subscription, Proxy Sage role or granted), until when, and the matching Stripe customer ID or Discord ID	To know whether your account has Pro	Performance of our agreement with you
Pro: your synced preferences (support presets, printer, raft and navigation settings)	To sync them between your browsers	Performance of our agreement with you
Pro: cloud projects you choose to save (the .brew file with your model, supports and a small preview image) and their names, folders, sizes and dates	To store your projects and let you open them anywhere	Performance of our agreement with you

We do not look at your cloud projects, except when needed to keep the service running or when required by law. When a file is uploaded, our server only checks that it is a Presupport project file and how large it is.

4. Payments

Pro subscriptions are sold through Stripe's Managed Payments, where Link (part of Stripe) acts as the seller of record. Stripe and Link process your payment details, billing address and tax information under their own privacy policies (Stripe, Link). We never receive your card details. We receive your Stripe customer ID, your email address and the status of your subscription (active, cancelled, until when), so we can turn Pro on and off.

5. Who processes data for us

Supabase – accounts, the database and our server functions. Hosted in the EU.
Cloudflare – hosting of the website, and storage of cloud project files (Cloudflare R2, in Western Europe).
Stripe / Link – payments (see section 4).
Discord – only if you choose to sign in with or link Discord.
Our own mail server (proxybrewer.com) – sending account emails.

These providers process data only on our instructions (or, for Stripe and Link as seller, under their own responsibility). Some are based in the United States; where data may be transferred outside the EU, this happens under the EU's standard contractual clauses or the EU–US Data Privacy Framework. We do not sell your data or share it with anyone else, unless required by law.

6. How long we keep it

Account data: as long as you have an account. When you ask us to delete your account, we delete it and everything linked to it within 30 days.
Cloud projects: while you have Pro. When Pro ends, you can still download them for 30 days; after that they are deleted automatically. Unfinished uploads are removed after a day.
Synced preferences: kept with your account, also when Pro ends, so they come back if you renew. They are deleted with your account.
Payment records: kept by Stripe and Link as long as tax and accounting law requires.
Data in your browser: until you clear it.

7. Your rights

You have the right to access your personal data, have it corrected or deleted, receive it in a portable form, restrict or object to its processing. To use these rights, or to delete your account, email us at info@proxybrewer.com from the address of your account. You can download your cloud projects yourself at any time.

If you think we handle your data wrongly, please contact us first. You also have the right to complain to the Dutch data protection authority, the Autoriteit Persoonsgegevens, or the authority in your own country.

8. Security

Data is sent over encrypted connections. Each account can only reach its own data; this is enforced by the database itself. Cloud project files are stored privately and can only be fetched with short-lived links that our server hands out to the owner.

9. Age

You need to be at least 16 years old to create an account.

10. Changes

We may update this policy when Presupport changes. The date at the top shows the latest version; for important changes we will let account holders know in advance.