Spreadsheet vs Investment Tracking App

A spreadsheet is often the first tool for tracking investments. It's flexible, free, and familiar. For a couple of accounts, it works fine. But as a portfolio grows - more assets, more currencies, more history - spreadsheets start to struggle in ways that aren't always obvious at first.

Where Spreadsheets Work

A simple spreadsheet can handle the basics: listing assets, recording values, watching totals go up or down. There's no learning curve, no subscription, and full control over the data. For tracking a handful of assets in one currency, it gets the job done.

Where They Start Breaking Down

The cracks usually appear gradually:

  • Performance calculation gets complicated. Knowing that a stock went from $100 to $120 is easy. Knowing your actual return after multiple deposits and withdrawals at different times is not. Calculating money-weighted returns (MWRR) in a spreadsheet requires formulas that are hard to build and easy to break.
  • Multiple currencies add friction. If assets are held in different currencies, every update needs exchange rate lookups and conversions. Miss one and the totals are off.
  • History is fragile. One wrong edit, one deleted row, and months of tracking data can be lost. There's no undo history for changes made weeks ago.
  • No real analytics. A spreadsheet shows raw numbers. Turning those into trends, profit and loss, or long-term projections means building and maintaining complex formulas - and trusting they're correct.
  • It becomes a chore. What starts as a five-minute monthly update can turn into a tedious session of copying values, fixing formulas, and checking totals. The more assets tracked, the longer it takes.

What a Dedicated Tool Adds

A tracking app doesn't replace the idea behind the spreadsheet - it automates the parts that make spreadsheets painful:

  • Automatic performance metrics. MWRR, profit and loss, and growth rates calculated from the data, not from hand-built formulas.
  • Currency handling. Automatic currency conversions using historical exchange rates, so multi-currency portfolios just work.
  • Reliable history. Every update is recorded. No accidental deletions, no formula errors overwriting past data.
  • Projections. Long-term projections based on real historical performance, not guesswork in a separate tab.

The Best of Both Worlds

The appeal of a spreadsheet is control and simplicity - entering data manually, owning the numbers, no black boxes. That doesn't have to be lost.

NetFiscus keeps the manual entry approach that makes spreadsheets feel trustworthy, but adds the analytics that spreadsheets can't realistically provide. No bank connections, no automatic syncing - just enter values the same way a spreadsheet works, and get investment performance, trends, and projections calculated automatically.

If a spreadsheet still works, there's no rush to switch. But when updating it starts feeling like a part-time job, that's usually the sign it's time for something purpose-built.