Privacy Policy
Last updated: September 25, 2026
This policy supplements the shared Miltinson Technologies privacy framework at https://www.miltinson.com/legal/privacy. Where this document is silent, the shared framework applies.
Home Theater Planner is run by Miltinson Technologies LLC, a Washington limited liability company (“we”, “us”).
What we collect
The table lists what the app collects, why, who holds it and for how long.
| What | Why | Provider | Retention |
|---|---|---|---|
| Your email address and password | To create your account and sign you in. We store only a one-way hash of your password. | Neon (database), Vercel (hosting) | Until you delete your account in Account settings or ask us to delete it. |
| Rooms and layouts: room name, dimensions, wall and treatment choices, display, speaker and seating positions | To save your plans and produce placement guidance and reports. | Neon | Until you delete the room or your account. |
| Floor plan images you upload | To show your plan behind the layout. Images are compressed and stored in the database. | Neon | Until you remove the image, delete the room or delete your account. |
| Rooms made before you sign up | To let you try the planner without an account, linked to a cookie in your browser. | Neon | Moved to your account when you sign up. Otherwise deleted no sooner than 28 days after creation. |
| Share links for placement reports | To let anyone you send the link to view a read-only report. | Neon | Until you delete the room. A link you turn off stops working but its record stays until then. |
| Feedback you send | To fix bugs and plan features. Linked to your account when you are signed in. | Neon | Until it is no longer needed. |
| Billing details | To sell and manage paid plans. We send Stripe your email address and account ID to start checkout. Stripe collects your payment details; we never see or store your card number. We store your Stripe customer and subscription IDs and your plan. | Stripe | We keep the IDs until you delete your account. Stripe keeps its records under its own policy and legal obligations. |
| Session cookie | To keep you signed in and to link rooms made before sign-up. It holds your account ID and email address in sealed form. | Your browser | 7 days, or until you log out. |
| Product analytics: pages viewed (with share-link tokens removed from the URL), clicks and other interactions, when you save a layout (with the room’s ID), the type of feedback you send, when a placeholder ad slot is shown, browser and device details, and your IP address, which PostHog receives with each request and can use to estimate your location | To see which features are used and where the app needs work. PostHog gives each page load a random ID held only in memory. It sets no cookie and stores nothing in your browser. Session recording, heatmaps and surveys are turned off. | PostHog | Kept under our PostHog project’s retention settings. |
| Request logs: IP address, browser, pages requested | To host the site and diagnose errors. | Vercel | Kept under Vercel’s log retention settings. |
Cookies and analytics
We set one cookie, which keeps you signed in and links rooms you made before signing up to your browser. The app needs it to work. Our analytics set no cookies and store nothing in your browser. We do not use advertising cookies.
Advertising
We do not currently show ads. Some pages have placeholder spaces reserved for future ads or sponsors. They load nothing from an ad network. We record in analytics when one is shown. If we add ads, we will update this policy first.
Selling and sharing
We do not sell your personal information, and we do not share it for cross-context behavioral advertising. We share it only with the service providers below, to run the app.
Do Not Track and Global Privacy Control
We do not change how the app works in response to Do Not Track signals. We treat a Global Privacy Control signal as a request to opt out of the sale or sharing of your personal information. We already do neither, so the signal is honored by default.
Service providers
- Vercel hosts the app and keeps request logs.
- Neon hosts the Postgres database.
- Stripe processes payments for paid plans.
- PostHog provides product analytics.
Each processes data for us under its own terms.
Your choices
In the app you can delete rooms, turn off share links, cancel a subscription with Manage billing on the Upgrade page, and delete your account in Account settings. Deleting your account deletes its rooms, layouts, images and share links, and cancels any subscription. Feedback you sent stays, without your account linked to it. To see, correct or get a copy of your data, write to contact@miltinson-technologies.com.
Your privacy rights
Wherever you live, you can ask us to tell you what personal information we hold about you, give you a copy in a portable format, correct it or delete it. Write to contact@miltinson-technologies.com from the email address on your account, or tell us how to confirm the request is yours. We respond within 45 days. If we decline any part of a request, you can appeal by replying to our decision, and we will answer the appeal within 45 days.
Consumer health data
We do not collect consumer health data as defined by Washington’s My Health My Data Act.
Security
We use reasonable safeguards to protect your information, including encrypted connections and one-way password hashes. No method of storing or sending data is completely secure.
Children
Home Theater Planner is not directed at children under 13, and we do not knowingly collect their information. If you believe a child under 13 has given us information, write to contact@miltinson-technologies.com and we will delete it.
Changes to this policy
When we change this policy, we post the new version on this page and update the date at the top.
Contact
Miltinson Technologies LLC, contact@miltinson-technologies.com.