Finance Apps vs Spreadsheets: Which is Better for Tracking Money?

Every personal finance discussion eventually hits the question: "Should I use an app or a spreadsheet?" The answer depends on what kind of person you are, your spending personality type plays a big role.

The spreadsheet case

Spreadsheets give you total control. You design the categories, the formulas, the layout. Nothing is hidden behind an algorithm. For people who enjoy building systems, this is genuinely satisfying.

Works best for:

• People who enjoy data and formulas
• Those who want complete customisation
• Anyone who likes spending Sunday mornings tweaking pivot tables

The catch: Spreadsheets require manual data entry. You have to download CSVs from your bank, paste them in, categorise transactions, and update formulas. Most people do this enthusiastically for 2-3 weeks, then stop.

The dropout rate for manual financial tracking is around 85% within the first month.

The app case

Modern finance apps connect directly to your bank and do the data entry for you. Transactions flow in automatically, get categorised by AI, and your spending picture builds itself.

Works best for:

• People who want insights without the work
• Anyone who's tried spreadsheets and stopped
• Those who check their phone more than their laptop

The catch: You're trusting a third party with your financial data (though open banking in NZ is regulated and read-only). And you lose some customisation, the app decides how to categorise "Woolworths" (groceries) vs "The Warehouse" (shopping).

The hybrid approach

Some people use both. An app handles the automatic tracking and daily "safe to spend" number, while a spreadsheet handles longer-term planning (retirement projections, mortgage scenarios).

This gives you the convenience of automation for day-to-day decisions and the flexibility of a spreadsheet for big-picture planning.

The NZ factor

In New Zealand, the app ecosystem is smaller than the US or UK. Your main options for apps that actually connect to NZ banks are Steady and PocketSmith. Both use Akahu for bank connections. See our full NZ budgeting apps comparison.

Spreadsheet templates designed for NZ (with fortnightly pay cycles, KiwiSaver, and NZD) are harder to find, most templates online assume US tax brackets and monthly pay.

Why do budgeting spreadsheets stop getting used?

Not because people lack discipline. Because the work arrives every week and the payoff arrives every few months.

A spreadsheet needs a download, a paste, and a categorising session before it tells you anything. Miss two weeks and you face a backlog, and a backlog is where almost every abandoned spreadsheet dies.

The apps did not win on features. They won by removing the weekly chore.

Is my data safe if I connect an app to my bank?

Safer than the alternative that came before it, which was handing an app your internet banking password.

An open banking connection never gives the app your login. You authorise it at the bank, you choose which accounts to share, and you can cut it off at any time. Access is read-only, so nothing connected can move money.

The fair question to ask any app is a different one: what do they do with the data once they have it, and can you export and delete it.

Can I keep a spreadsheet and still skip the data entry?

Partly, and it is the arrangement a lot of people land on.

Every NZ bank lets you download transactions as a CSV, so the entry work is a monthly paste rather than a nightly one. Steady also exports everything it holds, which means the day-to-day tracking is automatic and your long-range planning sheet still gets fed.

The split that works: the app answers what happened, the spreadsheet answers what if.

Which works better for a couple?

An app, in almost every case, and the reason is access rather than features.

A shared spreadsheet has one author. Whoever built it understands it, and the other person asks them questions, which quietly makes one of you the household accountant and the other a spectator.

A connected app gives both people the same view on their own phone. Our guide to managing money as a couple covers how to split what you share and what you keep separate.

Bottom line

If you've tried spreadsheets and they didn't stick, that's not a character flaw, it's a data entry problem. Try an app that automates the boring bits. If you love spreadsheets and actually maintain them, keep going.

The best system is the one you'll use consistently. Everything else is noise. Compare your options.