Slipstream

Budgeting is a pain. It doesn't have to be.

Most money apps either treat your life like a small business or bury it in features. Slipstream keeps the job simple: make a plan, get your spending in, and we give you one number to watch. That's the whole app — and it closes every month with a review that tells you exactly what happened.

Early access is invite-only while we polish. No spam, ever.

Slipstream home screen: +$260.30 ahead of plan for August, quick-add bar, variable spending rings and a fixed-bills checklist

Why another budgeting app

Nobody wants a second job as their own accountant.

Consumer finance software fails in two directions. One kind hands you a chart of accounts and calls the homework a feature. The other "simplifies" until all that's left is a feed of insights about money you already spent. Neither answers the only question that matters mid-month: how am I doing?

Slipstream answers it with a number, not a vibe.

How it works

The whole loop, four moves.

1

Make out your budget

Set your golden budget once: income, fixed bills, variable spending, and what goes to savings or debt each month. Every month opens from it in minutes — and can diverge when you know something needs to change.

The golden budget: income, fixed and variable lines with monthly amounts
2

Get your spending in

Quick-add takes seconds, and known payees categorize themselves. Or skip the typing entirely: premium connects your banks and cards through Plaid and brings the transactions to you.

Transactions list for August with payees, categories, accounts and amounts
3

Watch the headline number

Every line shows plan, actual, and variance — and the headline projects where the month will land. Untracked spending counts against you. The number never flatters.

Month budget with planned, actual and variance columns for every line
4

Close the month with a straight story

The Month in Review: what you planned, what happened, your biggest wins and misses, and where every dollar of surplus actually went. Read it, adjust the plan, go again.

Month in Review for July: surplus headline, biggest misses and wins, and where the surplus went

Goals

Point it at something bigger.

Budgets are means; goals are ends. Pay off the car, build the emergency fund — set a target and a date, and every month shows where you stand against your baseline, plus the date you'll actually hit at this pace.

Two goals — a car payoff and an emergency fund — each tracking ahead of its baseline

Agent access

Or just talk to it.

Slipstream speaks MCP, the open protocol AI assistants use to work with real tools. Connect Claude — or any assistant that speaks it — and your budget becomes a conversation: log spending from your phone, ask how the month is tracking, have the review read back to you.

The deal

Simple on top. Serious underneath.

Easy is the feature Real double-entry books under the hood, kept for you. You see plans and plain answers — never bookkeeping homework.
Premium, when you want it The core app has everything: budget, transactions, reports, goals, agent access. Premium adds automatic import from your banks and cards through Plaid.
Your data isn't the product No ads, no selling your transactions, no "partners." A fair price instead.

A budget you can hold yourself to. Finally.

We're letting people in as we polish. Leave an email and you're in line.

No spam, ever. One email when your invite is ready.