Timer tracking is the easy part, same as Toggl. Harvest adds invoicing straight from tracked hours and expense tracking on top, which is a genuinely reasonable weekend rather than an evening, but still well within reach.
VIBE SCORE 95/100
The parts this build actually needs, each rated on its own — the average is the Vibe Score above.
| Landing page | 99 |
| CRUD database | 95 |
| User login | 92 |
Don't feel like building it? These are already made, open-source, and free.
Borderline. Timer tracking is the easy part, same as Toggl. Harvest adds invoicing straight from tracked hours and expense tracking on top, which is a genuinely reasonable weekend rather than an evening, but still well within reach.
Harvest costs $13.75/mo (about $165/yr) as of 2026-08. That's what a working rebuild would save you.
Their forecasting/resource-planning module (who's available for new work next month) is a separate, deeper feature Approval workflows for team timesheets add a small workflow layer beyond solo tracking Payment collection on the invoice (accept a card) needs a real payment integration if you want it
Yes — Kimai are open-source options worth trying before you build your own. Details are in the standard parts section on this page.