Duolign Join the waitlist
Launching soon · UK couples, Android first

Your household money, finally in sync.

The mobile command centre for UK couples. Every account in one view, a payday transfer checklist calculated to the penny, and your surplus routed to the goals you set together — in about five minutes a month.

UK households only. We’ll email you when we launch — nothing else.

Encrypted in transit & at rest FCA-authorised Open Banking Read-only connections, always
One view

Every account, card and pot. One place.

Stop opening four banking apps to work out what the household actually has left this month.

  • Connect your banks
    Monzo, Starling, Barclays, Lloyds, HSBC and more, through our FCA-authorised Open Banking partner — into one live dashboard for both of you.
  • Refreshed in the background
    You’re both looking at the same numbers, whether it’s the morning commute or a joint purchase you’re deciding on together.
  • One number that matters
    What’s genuinely left across everything — not four balances you have to add up in your head.
Look forward

See where the money’s taking you, not just where it went.

Duolign models the months ahead so a decision made today has a number attached to it.

  • Surplus routed to your goals
    Once the bills and baselines are covered, the household surplus goes to the targets you both set — a deposit, a wedding, next year’s holiday.
  • Avalanche and Snowball, side by side
    Avalanche saves the most interest; Snowball clears balances fastest. Duolign shows the exact month you’re debt-free on either plan.
  • Drag a slider, watch 12 months unfold
    Move the salary slider, add a car payment, pause the debt overpayment — and watch the surplus, personal allowance and debt-free date ripple out over the next 1, 6 or 12 months. Nothing is saved.
Avalanche
Feb 2027
Least interest paid
Snowball
Apr 2027
First balance clears sooner
Payday

From payday scramble to five minutes.

The maths runs across both incomes and every joint obligation. You get a checklist.

  • A numbered transfer checklist, to the penny
    Exact amounts, in order. Work down the list, tap each amount to copy it into your banking app, done.
  • No unilateral changes
    Any tweak to a shared target needs a tap from both phones before the monthly plan updates.
  • Your personal allowance is protected
    Once the joint transfers are done, whatever’s left in your personal account is yours to spend. No oversight, no guilt.
On your phone

Built for a pocket, not a spreadsheet.

  • Notifications for the things that matter
    Your partner approved a change, or it’s time to run payday. Nothing else.
  • Biometric unlock
    Face ID, Touch ID or Android biometrics. A PIN as the fallback.
  • Copy an amount, paste it in your bank
    Every figure on the payday checklist is one tap to your clipboard.
Launching soon

Get your household in sync.

Android first · iOS to follow · UK households only.