Privacy policy · Propulsion

Who we are

Propulsion is run by Cameron Hearne, trading as Propulsion Property. We are the data controller for the personal data described here, which means we decide how and why it is used.

Contact: cameron@propulsionproperty.co.uk

What we collect

Your account

Your email address and password. Your password is stored by our login provider (Supabase) in scrambled (hashed) form. We never see it.
Your name, if you add one in Settings.
When you signed up, when you last logged in, and whether you have confirmed your email.
Your plan (free or paid) and account settings, such as your default target yield, target ROI, mortgage rate and standard fees.
Small housekeeping flags, such as whether you have finished the tutorial and when we last showed you a banner.

The deals and properties you enter

Saved deals: the figures you enter, the results we calculate, and the name you give the deal (often a property address).
Comparable sales and area information you looked up when you saved a deal.
Pipeline stages, viewing dates, notes, call and viewing logs, offers (amount, date, outcome, conditions and agent feedback) and the seller's position (chain status, motivation, timescale and your notes).
Portfolio properties: address, price paid, property type, rent, running costs and mortgage payment.
Refurbishment estimates.
A history of pipeline stage changes and refurb estimate links for each deal.

Some of this can include information about other people, such as a seller's circumstances or an agent's feedback. Please only record what you need, and keep it factual.

Browser add-on

If you install the Propulsion add-on for Chrome or Edge and connect it to your account:

It only runs on Rightmove property, search and sold price pages you open yourself, SpareRoom room search pages you open yourself, and Propulsion's own connect page. It doesn't read any other website, your browsing history, or anything else in your browser.
On a property page you open, it reads the listing's price, status (for example under offer or sold STC), number of bedrooms, property type, the address shown and Rightmove's own "Added on" or "Reduced on" date, and sends them to your Propulsion account with the listing's link. We use this to build your own price history for that property, to work out a motivated seller rating from it (for example how long it's been on the market and how far the price has dropped since you first saw it), and to compare the price with your saved deal's maximum bid.
If you open the calculator from the add-on, the listing's link and number of bedrooms go with it, and the link is saved with the deal if you save one, so the add-on can show that deal's maximum bid next time.
On a search page you open, it counts the listings on screen. Only if you press Save does it send them to your account as your own comparables: for each listing its price or rent, bedrooms, property type, the area or address shown, its status, the date shown and its link. They appear on the Comps tab for that area. You can save again to update them.
This history and your saved comparables are private to your account. We don't share it with other users or anyone else.
When you connect it, we create a key for that browser, record a name for it (for example "Chrome on Mac") and when it was last used. We only store a scrambled (hashed) copy of the key. You can disconnect any browser from Propulsion or from the add-on.
The add-on doesn't fetch any other pages on its own, and doesn't collect your name, email or location from the browser.

When you contact us

Through the Contact us form: your email address, the category you pick, what you tell us, the page you were on, and a screenshot if you attach one.
By email: whatever you send us.

Deal sourcing waitlist

Your email address, if you join the waitlist.
An earlier version of this page took fuller applications. We no longer hold any of them.

Payments

If you have a paid plan, payment is handled by Stripe. We never see or store your card details. We store the reference numbers Stripe gives us for your customer record and subscription, so we can link your payment to your account.

Usage and technical information

How many AI analyses you have run this month, so we can apply the monthly limit.
A simple record of which features your account uses (for example "deal saved" or "letter generated") and of errors that happen, so we can see what's useful and fix problems. It holds your account ID, the action and the page, but no browser details or IP address.
Your IP address. Our hosting provider (Render) records it in its server logs for a limited period. We also use it briefly, in memory only, to stop the waitlist form being spammed. We don't store it in our database.

Customer relationships

Our team keeps simple internal records of customer relationships (for example, people interested in deal sourcing, or business partners), which can be linked to your account. Our admin pages show sign-up and last login dates so we can spot accounts that may need help. A weekly internal summary email to our team lists new sign-ups.

What we don't collect

We don't use any outside analytics, advertising or tracking tools.
We don't collect your location. Postcodes you search are about properties, not you.
We don't sell your data, and we don't use it for advertising.

Why we use it (and our legal basis)

UK data protection law (the UK GDPR and the Data Protection Act 2018) requires a legal reason for each use of your data.

To provide the service you signed up for (your account, saving deals, pipeline, portfolio, refurb estimates, AI analysis, comparable sales, payments). Legal basis: contract.
To answer your questions and fix problems you report. Legal basis: legitimate interests (helping our users).
To keep the service secure and working (login security, spam protection, usage limits, server logs). Legal basis: legitimate interests.
To look after customer relationships (internal records, spotting inactive accounts that may need help). Legal basis: legitimate interests.
To email you about deal sourcing if you joined the waitlist. Legal basis: consent, which you can withdraw at any time.
To keep payment records for tax and accounting. Legal basis: legal obligation.

The AI analysis gives an opinion on a deal you entered. It is information only. It doesn't make any decision about you that has legal or similar effects.

Who we share it with

We use a small number of service providers to run the app. They only use your data to provide their service to us.

Supabase: our database, login system and file storage (support screenshots). Holds your account and everything you save. Region: London, UK.
Render: hosts our website and server. Region: Frankfurt, Germany (EU).
Anthropic: powers the AI analysis. When you press the analysis button we send the deal's figures and calculated results (prices, rents, costs, yields, ROI, targets). We don't send your name, email or the deal's name.
Stripe: processes payments for paid plans, under its own privacy policy.
Resend: sends our weekly internal summary email to our team, which includes new sign-ups' email addresses.
Google Fonts: our pages load fonts from Google, so your device connects to Google, which sees your IP address.
jsDelivr: a content delivery network that serves the login and PDF libraries our pages use. Your device connects to it, so it sees your IP address.

Property data lookups. When you search comparable sales, our server (not your device) sends the postcode you entered, or details derived from it, to these public services:

postcodes.io (to find the location and council area)
planning.data.gov.uk (planning constraints at that location)
ONS Nomis (employment figures for the council area)
The government's EPC register (floor areas of nearby sold properties)

None of these lookups include your name, email or account details.

We may also share data if the law requires it, or to protect our rights or someone's safety.

What stays on your device

Your login session, so you stay signed in.
Unsaved drafts of the calculator, refurb estimator, letter templates and portfolio form, so a refresh doesn't lose your work.
Your scroll position and tutorial progress.
Letter templates: the names and addresses you type into a letter stay on your device. We don't receive them.
If you use the browser add-on: its key for your account, and whether you've minimised its panel, are kept in the add-on's own storage in your browser. Removing the add-on deletes them.
In the iPhone app, deal reminders are scheduled on your phone only. They aren't sent to us, and deleting the app removes them.

You can clear these at any time by logging out, clearing your browser's site data, or deleting the app.

Cookies and analytics

We don't use advertising, analytics or tracking cookies. We store the items listed above in your browser's local storage because the app needs them to work, or because you are using a feature that needs them (like drafts). Payment pages run by Stripe set their own cookies.

Data outside the UK

Some of our providers (including Anthropic, Stripe, Resend, Google and jsDelivr) may process data in the United States or elsewhere outside the UK. Where they do, we rely on the protections UK law allows, such as the UK Extension to the EU-US Data Privacy Framework or the UK's International Data Transfer Agreement and Addendum.

How long we keep it

Your account and everything you've saved: until you delete your account. Deleting it permanently removes your login, profile, saved deals (with their notes, offers and history), portfolio, refurb estimates, browser add-on price history, saved comparables and connected browsers, and support requests.
Support screenshots: deleted with your account.
Waitlist emails: until you ask us to remove you, or the waitlist closes.
Internal customer records: may be kept, no longer linked to your account, after you delete it, so we have a record of our business relationships. Ask us and we'll delete them.
AI usage counts: deleted with your account.
Payment records: kept for 6 years after the end of the tax year they relate to, as UK tax law requires. Stripe also keeps its own records.
Backups: deleted data can remain in our database provider's backups for a limited time before it is overwritten.

Keeping it safe

All connections use HTTPS encryption.
Database rules mean each account can only read and change its own data. A small number of our team's admin accounts can see account details and support requests, to run the service and help you.
Passwords are hashed by our login provider, and secret keys stay on our server, never in your browser or the app.
Support screenshots are kept in private storage and can only be viewed by our team through short-lived links.

No system is perfectly secure. If a breach puts your rights at risk, we'll tell you and the ICO as the law requires.

Your rights

You have the right to:

get a copy of the personal data we hold about you
have inaccurate data corrected
have your data deleted (you can delete your account yourself in Settings)
restrict or object to how we use your data
receive your data in a portable format
withdraw consent at any time, where we rely on consent

To use any of these rights, email cameron@propulsionproperty.co.uk. We'll reply within one month. It's free in most cases.

If you're unhappy with how we've handled your data, please tell us first so we can put it right. You can also complain to the Information Commissioner's Office (ICO) at ico.org.uk or on 0303 123 1113.

Children

Propulsion is a tool for property professionals and investors. It isn't intended for anyone under 18, and we don't knowingly collect data from children.

Changes to this policy

We'll update this page if the way we handle data changes, and change the date at the top. If a change is significant, we'll let you know by email or in the app.

How we handle your data

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