Clarity over guesswork

Your bank says “Groceries”.
You remember wine, toilet paper, and Lego set.

Budget Ninja helps you track spending the way it actually happens—with categories that reflect real life, not guesses. Split expenses. Create your own structure. Understand your money without noise.

Split Expenses

Break purchases into meaningful categories

Custom Categories

Structure that matches your life

Real-Time Sync

Mobile and web, always in sync

Shared Budgets

Perfect for households

Available on mobile

Download on the App StoreGet it on Google Play

The problem

Why budgeting often feels vague

You connect your bank account. Transactions arrive automatically. And yet, everything still feels blurry.

A full shop becomes “Groceries”. A busy weekend becomes “Entertainment”. The data is there—but the meaning is missing.

When categories are too broad, it’s hard to make confident decisions.

A different approach

Money isn’t spent in categories. It’s spent in moments.

Budget Ninja lets you reflect those moments accurately.

Split expenses

Break a single purchase into multiple categories that reflect what you actually bought.

Custom categories

Create your own categories and subcategories that match how you think about money.

No assumptions

Adjust amounts so they match what actually happened. No rigid templates or guesswork.

Available everywhere

Mobile and web. Always in sync.

Budget Ninja works the same way on mobile and web. Track expenses, split purchases, manage categories, review your month—everything is available on both.

Every change syncs instantly. Add an expense on mobile—see it immediately on the web.

One budget, always up to date.

In practice

A simple example

You spend £45 at the grocery shop.

Instead of a single “Grocery” entry, you split it:

£4 bread£3 toothpaste£13 wine£5 toilet paper£20 Lego flowers bouquet

Your categories now tell the truth—and your budget reflects reality.

Who it’s for

Designed for different ways of managing money

Already using another budgeting app?

If your current app feels 'smart' but oddly unhelpful—this is why. Budget Ninja gives you control where automation falls short.

New to budgeting?

Start with income. Create categories that match your life. Watch your spending patterns emerge naturally. No rules. No pressure. Just visibility.

Income isn't fixed?

Add planned and unplanned income. See how your available budget changes in real time. Perfect when money doesn't arrive on a schedule.

Shared budgets

When money is shared, clarity matters

Budget Ninja allows you to share budgets with others.

One person logs spending on mobile. Another reviews the budget on the web. Everyone sees the same numbers, updated instantly—without chasing or double-checking.

What Budget Ninja offers

Split expenses into meaningful categoriesUnlimited custom categories and subcategoriesMobile and web accessReal-time synchronisationShared budgetsWorks with fixed or variable income

Get started

Understand your money without guessing.

Budget Ninja is designed to be clear, flexible, and intentional—so your budget reflects how you actually live. Available on mobile and web.