Keystone
Built for UK first-time buyers, aged 25–40

Your AI companion for home buying success.

Buying your first home in the UK is confusing, lonely and full of jargon. Keystone is the companion that remembers your whole journey — savings, credit, timeline — and keeps your plan up to date every time life changes.

Get started freeTry the AI companion
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Loved by 2,400+ future homeowners on the waitlist

Keystone
Remembers you

Memory: £11,200 saved · target Leeds · ~14 months to go

I just got a £3k pay rise — does that change anything?
Lovely news — congratulations. I’ve updated your plan: you can now reach your Leeds deposit about 2 months sooner, or aim a little higher. Want me to show both?
Keystone is updating your roadmap

Beyond one-off comparisons & brokers

HabitoMoneySuperMarketNuts About MoneyComparison sitesOne-off brokers
The feature nothing else has

Keystone remembers,
so you don’t have to.

Most tools forget you the moment you close the tab. Keystone’s AI Memory holds your full picture and continuously updates your recommendations as your progress and circumstances change — so you always feel supported, informed and one step ahead.

  • Recalls your savings pace, income and target areas
  • Re-plans automatically when life changes
  • Explains the ‘why’ behind every recommendation

Your living journey

Auto-updating

  1. Started saving

    £4,000 · Jan

  2. Opened a Lifetime ISA

    +25% bonus unlocked

  3. Pay rise remembered

    Plan re-calculated

  4. Mortgage-ready

    On track · ~5 months

Everything a first-time buyer needs

Built to close the gaps others leave open

Comparison sites quote you once. Brokers help you for a single transaction. Keystone stays with you — personal, persistent and genuinely on your side.

The core difference

AI Memory that never forgets

Keystone securely remembers your income, savings, timeline and the areas you love — so every answer builds on the last, not a blank slate.

Plain-English, no jargon

LISAs, SDLT, AIPs, leasehold — Keystone translates the confusing bits into clear next steps you actually understand.

Deposit & LISA planner

See exactly how much to save each month, how the Lifetime ISA bonus stacks up, and when you’ll realistically hit your target.

Mortgage-readiness score

A living view of your affordability and credit health, with the specific moves that nudge you closer to a confident ‘yes’.

Always up to date

Pay rise, new city, changed timeline? Keystone re-plans automatically — your roadmap reflects your life, not a form you filled in once.

One companion, whole journey

From ‘could I even afford this?’ to keys in hand — a single guide that stays with you the whole way, not just one transaction.

Try it right now

Ask anything.
Get a calm, clear answer.

This is a real preview of the Keystone companion — powered by your own AI provider. Ask about deposits, Lifetime ISAs, stamp duty or mortgages in principle, and see the plain-English guidance first-time buyers actually need.

Guidance, not regulated advice. For specific mortgage recommendations, Keystone connects you with a qualified adviser.

Ask Keystone
Live demo

Try the companion. Ask anything about buying your first home in the UK — deposits, LISAs, stamp duty, mortgages in principle.

From confused to confident

Your journey, in three simple steps

01

Tell Keystone where you’re starting

A few friendly questions — income, savings, where you want to live, and roughly when. Five minutes, no spreadsheets.

02

Get a living plan, built for you

Keystone turns it into a clear roadmap: deposit target, savings pace, mortgage-readiness, and your very next step.

03

Move forward with confidence

Ask anything, anytime. As your life changes, Memory keeps the plan current — so you always know what to do next.

Ready to make your first move?

See plans & get started

First-time buyers, feeling supported

A few words from the people Keystone was built for. (Sample stories.)

“Every other tool made me start from scratch. Keystone actually remembered my deposit goal and told me I was three months ahead. That feeling was everything.”
Portrait of a Keystone member

Priya & Dev

Buying in Manchester

“I went from ‘I’ll never afford this’ to a real plan. It explained my Lifetime ISA in a way that finally clicked, minus the jargon.”
Portrait of a Keystone member

Tom R.

First-time buyer, Leeds

“When I got a pay rise it just… updated everything. It felt like having a really calm friend who happens to know mortgages inside out.”
Portrait of a Keystone member

Chloe M.

Saving for a flat, Bristol

Simple, honest pricing

Affordable, even while you’re saving

Start free. Upgrade to Premium for the full AI Memory experience — priced to fit a first-time buyer’s budget.

Starter

Find your feet, for free.

£0/forever
  • Your first personalised plan
  • Deposit & savings basics
  • Ask the companion 5 questions / month
  • Plain-English jargon buster
Get started free
Most popular

Premium

The full companion, with AI Memory.

£9.99/month

≈ $12/mo · cancel anytime

  • Everything in Starter
  • Unlimited AI companion, 24/7
  • Full AI Memory — your plan stays current
  • Mortgage-readiness score & tracking
  • Lifetime ISA & stamp-duty planning
  • Priority connection to partner advisers

Secure checkout · no card details stored by Keystone

For brokers & lenders

White-label Keystone for your clients.

Per active user

Simple B2B2C pricing

  • Your brand, Keystone’s AI engine
  • Keep clients engaged & mortgage-ready
  • Warm hand-off when they’re ready to buy
  • Usage dashboard & insights
Talk to our partnerships team

Questions, answered

Everything you might want to know before you start.

Keystone is an AI companion built specifically for UK first-time buyers. It walks with you from 'thinking about it' to 'got the keys' — turning deposits, LISAs, credit, mortgages and conveyancing into clear next steps you actually understand.

Most tools forget you the moment you close the tab. Keystone's AI Memory securely remembers your whole picture — savings rate, income, timeline, the areas you love — and continuously updates your recommendations as your circumstances change. Get a pay rise or move your target city and your plan quietly re-plans itself.

Comparison sites and brokers are brilliant at one transaction, then move on. Keystone is the layer above them: a persistent companion that remembers context, explains the 'why' in plain English, and keeps guiding you between milestones — not just at the point of a single mortgage quote.

No. Keystone gives clear, personalised guidance and education to help you feel confident and prepared. For a regulated recommendation on a specific mortgage product, we'll help you connect with a qualified mortgage adviser — including partner brokers where relevant.

Keystone is free to start. Premium is £9.99/month (about $12) — designed to stay affordable even while you're stretching to save a deposit. You can cancel anytime.

Yes. Keystone white-labels for brokers and lenders, so you can give clients a branded AI companion that keeps them engaged and mortgage-ready between conversations. Get in touch through the partner section below.

Your journey is yours. Keystone's Memory exists to serve you, we never sell your personal data, and you can export or delete it whenever you want.

Buy your first home with a companion in your corner

Join the waitlist for early access. Be first to meet the AI that remembers your journey and keeps your plan moving — one confident step at a time.

No spam. Early access for UK first-time buyers. Unsubscribe anytime.