The full story.
Last updated: April 2026
Frequently asked questions
What is Keys?
A shared workspace for two people buying a house in the UK. It tracks the phases between offer and keys, the budget, the paperwork, and the people you're working with (solicitor, broker, agent). There's a built-in assistant called Foxie that can read your data and help you make decisions.
This is a fun vibe-coding side project for me — built solo, shipped for free, no roadmap pressure. You can see the rest of what I'm working on at github.com/sinemypolat.
Is it free?
Yes. There's no paid tier, no trial, no upsell. If running costs ever force a change I'll say so plainly before flipping anything on.
Do I need an account or password?
No password. You give a first name and an email when you create a workspace. The email is only used to send you a sign-in link if you switch devices. That's it — no password resets, no MFA, no account portal.
Can I use it solo?
Yes. The product is shaped around two-buyer households but works fine if you're buying alone. Skip the invite step and you've got a single-seat workspace.
What does Foxie do? Is my data sent to AI?
Foxie is the in-app assistant. It reads your workspace (phases, budget, contacts, uploaded files) so it can answer specific questions, compare quotes, draft emails, and search the web for UK mortgage rates.
Foxie runs on Google Gemini. When you ask it something, the relevant slice of your workspace and your message are sent to Google's API. Google's API terms for paid usage say data is not used to train their models. I don't store your messages beyond what's needed to render the chat in your session.
If you'd rather not use Foxie, ignore it — it's a single button in the corner of the dashboard. Nothing else in the app calls AI.
Can I delete my workspace?
Yes. Send a message from the address on the workspace and I'll wipe it. Self-serve deletion is on the to-do list.
Is this only for the UK?
Yes, for now. The phases, terminology (solicitor, completion, SDLT), and Foxie's domain knowledge are all tuned to England and Wales. Scotland and Northern Ireland have different processes — the app doesn't model them yet.
Who built this?
Just me. It's a fun vibe-coding side project — a way to ship something useful while learning new tools. The rest of my work is at github.com/sinemypolat.
Privacy & terms
What we collect
- Your first name and email address (given when you create a workspace).
- Your partner's first name and email address, if you invite them.
- Anything you type or paste into the workspace: phase notes, budget numbers, contacts, comments, chat messages.
- Any files you upload (typically PDFs of solicitor quotes or mortgage offers).
- A signed session cookie so we know which workspace seat is yours.
- Anonymous traffic data via Vercel Analytics (no cookies, no fingerprinting).
Where it lives
Hosted on Vercel. Workspace data lives in Vercel's KV (Redis) store. Uploaded files live in Vercel Blob. Outbound email is sent via Gmail SMTP from a dedicated app account. Foxie's AI calls go to Google's Gemini API. Vercel and Google are the only third parties that touch your data, and only for the purpose of running the app.
What we don't do
- No advertising. No ad networks. No tracking pixels.
- No selling your data. Ever.
- No training AI on your data. Foxie reads your workspace at request time, but the upstream provider's terms forbid model training on paid API usage.
- No analytics beyond aggregate pageviews and Web Vitals via Vercel.
How to delete your data
Send a message and I'll delete the workspace, files, and any session records within a few days.
Your rights (UK GDPR)
You can ask for a copy of your data, ask for it to be corrected, or ask for it to be deleted. Same email address as above. The app's complete data model is small enough that I can hand you a JSON export of everything within a few days.
Terms of use
Use Keys for tracking your own home purchase. Don't try to break it, scrape it, abuse the AI quota, or use it to harm someone else. I can suspend a workspace if it's being used in bad faith.
Keys is provided as-is, with no warranty. It's beta software built solo. Foxie can be wrong — always confirm important decisions (contracts, money, dates) with your solicitor, broker, or agent. I'm not liable for losses caused by acting on what the app shows you.
You own your content. By uploading or typing it in, you grant me a narrow licence to store and display it for the purpose of running the app for you.
Changes to this document
If I make a meaningful change (more data collected, new third party, different retention), I'll bump the date at the top and email anyone with an active workspace. Small wording fixes don't get an email.