Why I built a tracker instead of a spreadsheet

A time tracking spreadsheet is good enough when you only need a small manual log. It breaks down when it has to capture time while you work.

I used to keep hours in Excel. Not because spreadsheets are bad.

Excel has formulas, tables, charts, formats, filters, pivot tables, and automation. It can do a lot.

That was the problem. The spreadsheet did not fail because it was weak. It failed because I kept asking it to become a time tracker.

First it was a few rows. Then it needed daily totals. Then weekly totals. Then cleaner notes. Then better grouping. Then a way to fix a forgotten stop time. Then I wanted a pause button, and that is the moment a spreadsheet stops being a spreadsheet and starts becoming an app you maintain by hand.

A simple time tracking spreadsheet

If you want the spreadsheet version, start here:

Date	Start	End	Task	Project	Notes	Billable?	Total
Jun 26	09:10	10:25	Draft article	Marketing	First pass	No	1h 15m
Jun 26	10:40	11:30	Client email	Client A	Reviewed launch notes	Yes	50m
Jun 26	13:00	14:45	Fix invoice copy	Client B	Rewrote line items	Yes	1h 45m

That is a useful record. One row per work block. A start, an end, a label, and a note you can understand later.

If all you need is a timesheet, this may be enough. Put a formula in Total (End minus Start), sum the day, and move on. Do not type 1h 15m from memory.

Do not turn it into a shrine to precision. Do not add twelve columns because you might want them someday. If a field does not help you review, bill, or understand the work, leave it out.

Payroll sheets often add unpaid break, person, and approval. A solo log does not need those.

When a spreadsheet is enough

A spreadsheet works when the record is small and calm.

It is fine for a short time audit. Track at least three ordinary days, or a full work week if you need Monday versus Friday, then stop.

It is fine for occasional billable work. If you only bill a few blocks each week, a small table can support the invoice.

It is fine when the work happens in clean chunks. Start at 9, stop at 10:30, write the row, done.

The spreadsheet gets worse when the day does what days do.

You switch tasks. You get interrupted. You forget to stop. You come back after dinner.

Now the spreadsheet is storing time and being asked to understand it.

Time input is the first annoyance

Typing time is small friction, but it repeats all day.

09:10. 10:25. Project. Note. Billable. Total. Next row.

That is not hard. It is annoying. There is a difference.

Annoying input is dangerous because it makes you delay the record. You tell yourself you will fill it in later. And then, of course, you don’t.

Was the client call 45 minutes or 70? Did the follow-up happen before lunch or after? Was that admin work part of Client A, or was it only inbox cleanup?

The spreadsheet did not create the memory problem. It failed to catch the work while it was happening.

A timer is different because it captures the thing you are worst at remembering: the boundary. When did this start? When did it stop? That is the part memory smears first.

Pause is where the spreadsheet becomes software

The pause button sounds harmless.

You start work at 9:10. Someone calls at 9:35. You pause, resume at 9:48, and stop at 10:25.

In a timer, that is normal.

In a spreadsheet, you now need a rule. Do you add a break column? Do you split the row? Do you keep a hidden pause table? Do you write two rows and merge them later? Do you add buttons that write timestamps, and what happens if you press the wrong one?

Excel can support this. Of course it can. Depending on how far you go, you might use formulas, tables, scripts, or macros.

But… that’s a time tracker… in Excel!

That can be a fun project if the project is the spreadsheet. It is a bad trade if the project is the work you were trying to track.

Week start, midnight, and overlapping timers

Aggregating time by day seems simple. Then you want the same data by week.

Does the week start on Sunday or Monday? Fine, easy choice. Now every total, chart, and export has to use the same rule.

A work block can cross midnight. You start Sunday at 22:00 and stop Monday at 02:00. Is that four hours on Sunday, four on Monday, or two and two?

If Sunday and Monday sit in different weeks, the split changes the week total too. Pick a rule and keep it.

End minus Start on 23:30 to 00:20 goes negative unless you store the date too.

Then the stopwatch is still running.

A total no longer means what happened. It means what happened up to this moment. Open the sheet ten minutes later and the number should have moved. Forget the open row and today is always undercounted.

Then overlaps appear.

You track “Work” from 09:00 to 17:00. Inside it, you track “Deep work” from 13:00 to 15:00. Did you spend 8 hours working or 10?

For “total time spent working,” probably 8. For “deep work,” you still want those 2 hours.

Those are independent views of the same clock time.

“Work” still covers 8 hours, while “Deep work” covers 2 hours inside it. There is no leftover category unless you recorded one. That is interval logic, not simple row summing.

Then parallel timers make it worse.

If two stopwatches run at the same time, should they merge or stack?

For personal time, you probably do not want a day with 28 hours. But you may still want to know that the same hour touched two parts of your life: “Admin” and “Work,” “Learning” and “Coding,” “Family” and “Travel.”

So now the question becomes: are you measuring real elapsed time, or are you measuring category involvement?

Well, you can throw any solution against Excel.

Excel can handle the traps.

But you have to remember them. You have to encode them. You have to test them. Every new view, such as day, week, month, tag, no tag, or running timer, has to use the same rules.

At some point, the spreadsheet is no longer tracking time.

It is asking you to maintain a tiny time-tracking engine by hand.

Spreadsheet vs. time tracker vs. timesheet

These three things get mixed together, and that is where the trouble starts.

A spreadsheet stores and calculates rows. It is good at tables.

A time tracker captures work while it happens. It gives you a start, a stop, and a record you can correct later.

A timesheet is the cleaned-up record you review, submit, export, or use for billing.

Those are different jobs.

I wanted one spreadsheet to do all three. That was the mistake.

Why I built the tracker

I did not build TimeRetain to beat Excel at spreadsheets.

I built it because I wanted to stop maintaining a spreadsheet-shaped app.

I wanted a manual timer and not an automatic one. When I start a timer, I am saying what this block is for.

When I stop it, the boundary is already captured. If the record is wrong, I can edit it. Automatic capture can pick up minutes you never timed. I still wanted to name the block myself.

I started with simple tags, without forcing every entry into a project structure. That was right for a personal log with one pile of hours. If you have Client A and Client B, those belong on timelines now, and tags describe the activity.

I wanted CSV export because spreadsheets are still useful. I do not want the spreadsheet to be the thing I operate all day.

The billable parts came later, after a feature request. You can put a rate on a timeline or a stopwatch. When you need figures for an invoice, export CSV into the invoice you already send. That is enough. It does not need to be accounting software.

And I wanted the record on my own device first, because time data is personal. It shows clients, habits, rates, bottlenecks, late nights, and the shape of a working life. That is worth protecting.

Use a spreadsheet until it gets in the way

If a time tracking spreadsheet works for you, keep it.

A spreadsheet is portable, familiar, flexible, and easy to inspect. It is often the right first version.

But be strict about the line.

If you are typing times from memory, the spreadsheet is already leaking.

If you want a pause button, you are building software.

If overnight entries keep needing special fixes, the spreadsheet is making you think about the wrong thing.

If week totals require you to audit formulas before you trust them, the tool has become part of the work.

That was the line for me. My spreadsheet did not need one more formula. It needed to stop being the timer.

TimeRetain is the version I wanted after the spreadsheet got annoying.

You start, pause, resume, and stop by hand. Several stopwatches can run at once. You can edit a wrong boundary later.

Put each client, course, or employer on a timeline, and use tags for the activity. Add a rate if you bill. When a spreadsheet is the right place to finish, export CSV.

With Sync off, the record stays on your device. If you enable Sync, an encrypted copy is stored on TimeRetain’s servers. No account is needed for local use.

Use a spreadsheet if it works for you. And if you end up building a time tracker inside it anyway, welcome to the club!