Zero-based budgeting

Keeping a budget shouldn't take a lot of time or money.

Pensum is the budgeting app for the budget-wise. Assign the money you have to the things that matter, track what you spend, and see clearly where it went.

October 2026This month

Income3,280.00Carried in335.00Assigned−3,615.00 Fully assigned$0.00
CategoryAssignedActivityAvailable
House2,190.00−1,946.122,412.40
Mortgage1,850.00−1,850.000.00
Electric140.00−96.12212.40
Property taxes200.00–2,200.00
Food840.00−578.75261.25
Groceries700.00−512.40187.60
Dining out140.00−66.3573.65
Charity310.00−310.000.00
Church310.00−310.000.00
Short-term savings275.00−89.992,884.01
Vacation200.00–2,474.00
Car repairs75.00−89.99410.01
A drop spindle wound with gold yarn, a wooden whorl near its foot and a hook at the top
Workers used a drop spindle to spin their day's wool into thread. A weighted disc on the bottom helped keep it spinning, while the hook at the top pulled the fibers taut and spun them together into thread.

How it works

Every morning in ancient Rome, each spinner was handed a pensum.

It was a portion of wool, weighed out on a scale: exactly the amount for the day's work. That's budgeting the old way, and still the best way: allocating each portion to its task.

  1. 01

    Add your accounts

    Enter each checking, savings, credit card, and cash balance as it stands today.

  2. 02

    Assign every dollar

    Give the money you have a category until nothing is left to assign. That’s the zero in zero-based.

  3. 03

    Spend, record, adjust

    Log or import what you spend. When life changes the plan, move money between categories and keep going.

Features

Built for the way you actually budget.

Add, import, or sync

Enter transactions by hand, import using the files your bank already offers, or sync automatically via SimpleFin. Pensum never asks for your bank login.

Split anything

One shopping run can be groceries, household, and toiletries. Split a transaction across as many categories as you need.

Your rules for leftovers

Choose, category by category, how to handle leftover money or overspending.

Reports that answer real questions

Am I living within my means? What changed this month? Is my plan realistic? Who am I paying every month without noticing?

Budget together

Share a budget with a partner as an editor, or give someone view-only access.

On your phone too

Check what’s left in a category or log a purchase at the register. Your budget updates the moment you save.

Privacy and security

Your finances are nobody else’s business.

Sign in with Google

Pensum never stores a password. Google handles your login and two-step verification.

Only what’s needed

Your name, email, and your budget. Nothing else is collected, and nothing is sold or used for ads.

Kept separate and encrypted

Every budget is walled off from every other, and the database is encrypted at rest.

Yours to take or delete

Download a copy any time. Delete your account and every budget you own is removed, along with its history.

Questions

Common questions

What is zero-based budgeting?

You assign all the money you have right now to categories (rent, groceries, savings, that trip in June) until nothing is left to assign. Your budget then balances to zero, and every dollar has a purpose. When you overspend somewhere, you move money from another category, so the plan always matches reality. More on zero-based budgeting.

How much does Pensum cost?

Pensum is free during early access and aims to be the most affordable option on the market. You’ll get at least 30 days notice before paid subscriptions begin, and you’ll never be charged unless you choose a paid plan. You can export or delete your data at any time.

Do I have to connect my bank?

No. Enter transactions by hand, or import the files your bank already offers (CSV, OFX, QFX, or QIF). If you’d like automatic updates, you can connect through SimpleFIN, a separate service with its own small fee. Either way, Pensum never sees your bank login.

Can I switch from YNAB?

Yes. Export your budget from YNAB (or YNAB 4) and choose the file during setup. Pensum brings over your accounts, categories, transactions, and what you assigned each month. See how Pensum compares with YNAB, EveryDollar, and others.

Can my partner and I share a budget?

Yes. Invite them as an editor to budget together, or give someone view-only access. Everyone signs in with their own Google account.

Do you have an app?

Yes, without an app store: Pensum has a progressive web app (PWA) that looks and acts just like an app. Install it from your browser and it gets its own icon and opens in its own window, like any other app. It’s always up to date, and everything you change shows up on all your devices the moment you save.

  • iPhone or iPad: open pensumbudget.com in Safari, tap the Share button, then Add to Home Screen.
  • Android: open pensumbudget.com in Chrome, tap the ⋮ menu, then Add to Home screen (or Install app).
  • Computer: in Chrome or Edge, click the install icon at the right of the address bar, or find Install in the browser’s menu.

More in the help center: your first budget, category types, credit cards, and more.

Start with the money you have today.

Setup walks you through your accounts and your first month. Coming from YNAB? Import your budget during setup.