The honest comparison
An app like Monarch or YNAB pulls transactions automatically, categorises most of them, and shows the remaining budget in three taps. A spreadsheet like Tiller, a custom Google Sheet, or the free templates from Aspire Budgeting requires you to import transactions (Tiller automates this) and manage formulas yourself. The app removes friction; the spreadsheet maximises control. Which trade is right depends on your weekly habits, not the tool's capabilities.
Apps — strengths and weaknesses
Spreadsheets — strengths and weaknesses
Which one fits your situation
- Choose an app if: you've abandoned spreadsheets before, you want a mobile-first weekly check-in, you have multiple accounts to aggregate, you're budgeting jointly with a partner.
- Choose a spreadsheet if: you enjoy controlling formulas, you want zero recurring cost, you have one to three accounts, you'll genuinely open the file weekly.
- Choose a hybrid if: you want app-level automation for daily tracking but spreadsheet-level visibility for the annual review (Monarch + a Google Sheet net-worth tracker is a common combo).
Worked example — the same household, both ways
Same household, $5,200/month take-home, 6 accounts across 3 banks. App version: Monarch at $99.99/yr; weekly check-in averages 4 minutes; categorisation correct on ~92% of transactions; quarterly review takes 15 minutes because all data is pre-aggregated. Spreadsheet version: free Google Sheet (Tiller add-on $79/yr); weekly check-in averages 12 minutes including transaction import and recategorisation; quarterly review takes 25 minutes including formula updates. Net financial outcome over a year: indistinguishable, because the underlying behaviour (review, decide, adjust) is the same. The differences are time spent and personal preference, not financial result.

