Short version: generic time trackers are built for one employer or a list of projects. A fractional executive needs three things they do not provide: a single view of committed capacity across every client, hours the client confirms as work lands, and invoices that trace back to that confirmed work. Tesserow is built around exactly those three, with no cut of your rates.
The objection: "fractionals sell outcomes, not hours"
You will hear this from marketplaces and from some fractional executives, and there is a real point inside it. Nobody hires a fractional CFO to watch a timer. The value is judgment, and judgment does not bill by the minute.
But hours still exist. A retainer scoped at "about ten hours a week" is a promise about a slice of your week, and if nobody is counting, it drifts. The client cannot tell whether they are getting what they pay for. You cannot tell whether a third client fits. And when a question comes up about an invoice, the answer becomes a negotiation instead of a record. Tracking hours is not the opposite of selling outcomes. It is what keeps the outcome-based relationship honest enough to renew.
Why the tools you already know fall short
Tools like Harvest, Toggl and Clockify are excellent at what they were designed for: an individual or a team logging time against projects, usually for a single company. Freelancer suites add proposals, contracts and invoicing on top. None of them were designed for a person who is, in effect, a small firm with several concurrent clients, and it shows in three places.
1. They track the past. They do not plan the week.
A timer starts when you start and stops when you stop. It cannot tell you on Monday that you have committed 46 hours across four clients into a week that holds 32. Capacity planning in generic tools is a team feature, built to allocate employees to projects, not to keep one professional's book of business inside the hours that exist.
2. The hours are your claim, not a shared record.
A timesheet exported from a tracker is a document one side produced. Even the tools that offer client approval treat it as a checkbox at invoice time, after the month has already been reconstructed. What a fractional relationship needs is confirmation as work lands, so that by the time an invoice exists the hours behind it have already been agreed.
3. Nothing travels with you.
Years of dependable delivery across a dozen engagements live in scattered exports and other people's memories. When a prospective client asks how reliable you are, the honest answer is "ask my other clients," which is exactly the client list you would rather not expose.
What to look for instead
| Need | Generic time tracker | What a fractional executive needs |
|---|---|---|
| Capacity across clients | Per-project timers; no view of the whole week | One planner where every client's committed hours sit inside your real weekly capacity |
| Who vouches for the hours | You, via an exported timesheet | Both sides, confirmed as work happens |
| Invoicing | Sum of logged time, disputed after the fact | Invoices that flow from hours already approved, so every line reconciles |
| Budget guardrails | Optional per-project alerts | Overages routed to the client for approval before the line is crossed |
| Track record | CSV exports | A consistent, checkable record of delivery you can share without exposing your client list |
| Cost | Per-seat subscription | Core tools free for professionals; no cut of your rates |
How Tesserow approaches it
Tesserow is not a timer with an invoice button. It is built around the whole fractional engagement, from the first plan to the invoice that closes the month, for both the professional and the business.
- Plan real capacity. Lay out your week across every client in one planner. Set your true capacity once, and every new commitment is checked against it. No silent double-booking, no over-promised weeks.
- Work with confirmation. Hours are recorded as work happens and confirmed by the client along the way, not reconstructed from memory when the invoice is due.
- Keep the proof. Every engagement builds a consistent, checkable record: planned, delivered, approved, invoiced. Your confirmed hours build a professional standing you can share as proof with any client, anywhere, without revealing who the work was for.
Your existing clients come with you from day one. You bring your current book in yourself and start planning immediately; when a client joins to confirm your hours, they land on the shared record you both work from. Tesserow takes no cut of your rates and does not sell leads. The planner, hours and invoices from approved work are free for professionals; businesses pay for the coverage view and the audit trail.
There is nothing to join and nothing to migrate. Start with your existing engagements, plan this week, and send each client the page that explains what confirming your hours means for them: trustthehours.com.
Frequently asked questions
Should fractional executives track their hours at all?
Yes, even on a retainer. It is how you know a retainer is still tied to a real slice of your week, how a client approves an invoice with confidence, and how a record of reliable delivery gets built. The point is hours both sides have confirmed, not a surveillance log.
What is the difference between a timesheet and verified hours?
A timesheet is a claim made by one side. Verified hours were planned, recorded as the work happened, and confirmed by the client along the way, so the invoice built on them traces back to work both sides already agreed on.
How many clients can I realistically track this way?
As many as fit inside your real week. Our capacity guide and calculator walks through the math; most fractional executives land at three to five.
Is Tesserow a time tracker?
It includes time recording, but that is the smallest part. Tesserow is the planner, the confirmation, and the invoice in one shared record, for the professional and the business together.
Your time, defended. Your reputation, portable.
Tesserow is onboarding a small group of professionals who run several clients at once. No cut, no leads, no middleman.
Request early access