A budgeting app for couples that both of you will actually use

• —CapKin is a shared budgeting app for couples: one budget, two people, both logging expenses against caps you set together.
• —No bank login. Neither partner has to hand over bank credentials or expose their transaction history.
• —Logging takes seconds: say or type “groceries 42, gas 30” and CapKin splits and categorizes it for review.
• —It tracks and plans only. CapKin never connects to accounts or moves money.
• —Free during beta. Works in any browser, installable as an app, no app store needed.

Why most couples’ budgets fail

When a couple’s budget fails, the usual causes are friction and privacy. The arithmetic is rarely the problem.

The friction problem. One partner becomes the bookkeeper. They chase receipts, nag about spending, and update a spreadsheet nobody else opens. The system depends on one person’s patience, and it runs out.

The privacy problem. Most couples’ budgeting apps solve the friction by linking both partners’ bank accounts. That means every coffee, every gift, every personal purchase appears in a shared feed, and both of you hand your banking credentials to a third party. Plenty of couples are not comfortable with either.

CapKin’s approach: you share the budget and keep your bank accounts to yourselves.

How CapKin works for two people

• —One budget, two equal users. Your household has a single shared budget. You set an overall monthly cap and per-category caps together: groceries, eating out, transport, whatever fits your life. Both partners see the same totals against the same limits.
• —Each partner logs their own spending. Say it or type it: “milk 3.20, bread 2, and a taxi home 14.” CapKin splits the sentence into separate expenses, assigns categories, and shows the result for review. Nothing is saved until you confirm it. A log takes about ten seconds, which is short enough that the budget actually gets updated.
• —You both see where you stand. The dashboard answers the mid-month question: how much have we spent, in which categories, against what we agreed. You see totals against caps, with no transaction feed to argue over.
• —Gifts stay private. Because CapKin only knows what you tell it, a birthday present logged as “gifts 40” is a number in a category. A shop is recorded only when you say it or it is printed on a receipt you scan, and you can rename shops in Settings.

Because both of you log into one ledger, CapKin can notice what a solo app cannot: the same item bought twice on the same day, or a category that two people are quietly growing. The Sunday recap says “both of you”, never a name, and shows the entries behind each note.

For a step-by-step method for agreeing the caps in the first place, see how to create a shared family budget that works. For picking categories, see family budget categories. To agree who puts in what, compare three fair splits in the split expenses by income calculator, and size the takeaway cap with the eating out calculator.

No bank login, by design

CapKin has no bank integration to switch on. It does not request bank credentials, connect to card accounts, or import transactions. Expenses exist in CapKin only because one of you entered them.

That has three consequences couples tend to care about:

• —Privacy between partners. You share what you log, at the level of detail you choose. Your bank statement stays yours.
• —Privacy from third parties. There is no aggregator sitting between your bank and your budget. Data is encrypted in transit and at rest, and voice recordings are deleted immediately after transcription. CapKin has no audio database.
• —Nothing to break. No bank connection means no re-authentication loops, no missed syncs, no duplicate transactions to clean up.

The trade-off is manual entry. CapKin makes entry fast enough that it stops being a chore, and that is what the voice capture is for. If the no-bank-login angle is what drew you here, see our budgeting app without a bank login, and for the longer reasoning, budgeting without linking your bank account.

How CapKin compares to other couples’ budgeting apps

Each of these is a good product, and depending on what you want, one of them may fit you better.

Where the others are stronger: Honeydue and Zeta show real bank balances and bill reminders from live account data. YNAB has the deepest budgeting methodology and education. Goodbudget’s envelope system has a long track record.

Where CapKin is stronger: it never connects to your bank, treats both partners as equal users of one shared budget, and makes manual entry fast enough to keep up. It is also free during beta.

When CapKin is not the right choice

If one of these describes you, another tool will serve you better.

• —You want automatic transaction import. CapKin is manual-entry only. If you won’t log expenses, choose a bank-sync app like Honeydue or YNAB.
• —You want to pay bills or move money. CapKin tracks and plans; it has no payments, transfers, or accounts.
• —You want investment or net-worth tracking. CapKin is a spending budget only.
• —You need multiple currencies in one budget. A CapKin household uses one currency.
• —You’re not comfortable with beta software. CapKin is in beta. It’s free while it is, and founding households keep the free tier.

Getting started takes one evening

1. 1.Create the household and set caps together. Agree the overall monthly number and a handful of category caps. Fifteen minutes, ideally with snacks.
2. 2.Invite your partner. They join as an equal member with the same budget and the same visibility, logging their own expenses.
3. 3.Log as you spend. Say it or type it when it happens. Review the dashboard together at the end of the week, and keep the conversation on the numbers.

If your household grows, CapKin covers that too: kids can get capture-only accounts whose entries need a parent’s approval. See the family budget approach.