No timers. Your Mac records the week, sorts it by client, and drafts the timesheet and the Friday update.
Example data. Select a block, then:1–5 moves it to a clientX flips billable0 marks it as not client work
Who it is for
fractionalflow is the work journal for fractional executives and consultants: the CFO, CMO, COO, CTO or CRO with three, four or five engagements in the same week.
Each client has a retainer or a rate, a budget of hours and an update they expect. The record of who got what is usually your memory on a Friday afternoon. fractionalflow keeps that record as you work.
Your screen becomes a timeline. Each block lands on the client it was for, against that engagement's budget.
1 to 8 moves a block to a client, X flips billable, 0 marks it as not client work. What you set by hand beats every rule.
Where you left off with a client: the last session, what is open and what comes next.
How it works
Every block of the day under a ribbon of client colours. Select one to see what it was, who it was for and whether it bills.
Hours against each engagement's budget for the month, with billable and non-billable kept apart. Over budget shows in red.
One client, one period. Exact minutes per line, rounded up once per block of back-to-back work. Copy it, or export CSV or Markdown.
A client-facing summary of the week, written from that client's blocks. Your other clients' names are masked before the draft is written.
The Q4 board deck is ready for pre-read, and the pricing recommendation is with you for a decision.
Tell me if you want anything added to the deck before Monday.
Names, domains and keywords of your other clients are replaced before the draft is written. Read it before you send it.
What it takes off your Friday
The timesheet is built from what you did, so it matches how you bill. Paste it into the invoice, or export it.
| date | start | end | minutes_exact | minutes_rounded | billable | title |
|---|---|---|---|---|---|---|
| 2026-09-23 | 15:30 | 16:07 | 37 | 42 | no | Reviewing the draft board minutes |
| 2026-09-24 | 08:02 | 08:49 | 47 | 48 | yes | Rebuilding the Q4 revenue bridge for the board deck |
| 2026-09-24 | 08:49 | 09:31 | 42 | 42 | yes | Replying to the CEO on the pricing memo |
| 2026-09-24 | 14:31 | 15:01 | 30 | 30 | yes | Writing up notes from the pricing options call |
Pick a client and a week. fractionalflow writes the update from that client's blocks: what moved, what you did, where things stand. You read it, edit it and send it.
Compared the Northwind pricing tiers with the model built for Lumen last quarter.
Compared the Northwind pricing tiers with the model built for [another client] last quarter.
Privacy
You work inside other companies' confidential material. Here is where it is kept, and what leaves your Mac.
01
Recordings and your timeline are stored locally on your Mac, not on our servers.
02
Screen observations and prompts go to the provider you pick: Gemini, Claude, ChatGPT, or a local model through Ollama or LM Studio. With a local model, the analysis runs on your Mac.
03
A client update is drafted from that client's blocks only, with your other clients' names masked. A block that overlaps two clients appears on a timesheet as “Shared block”, with its time and no description.
Also leaving your Mac: anonymous usage statistics, which you can turn off in Settings, and any support message you choose to send.
Read the full listQuestions
It does the job of one without the timers. Your Mac records your screen while you work, and fractionalflow turns that into a timeline of blocks, each assigned to a client.
At the end of the week you have hours per client, a timesheet and a drafted update. We call it a work journal because it records what you did, not only how long it took.
Harvest and Toggl are built around timers and entries you fill in, and they do things fractionalflow does not: invoicing, team reports, integrations.
fractionalflow starts from the other end. It records the work as it happens and builds the entries for you, per client, with a summary of each block. You export the timesheet as CSV or Markdown and take it wherever you invoice.
Recordings and your timeline are stored on your Mac. Four things can leave it.
Screen observations, block text and prompts go to the AI provider you pick while you record; with a local model that analysis runs on your Mac. When you draft a client update, that client’s activity goes to the same provider with other clients’ names masked. Anonymous usage statistics are sent unless you turn them off in Settings. A support message goes to us if you send one.
The privacy page has the full list.
The draft is built to prevent it. An update is written only from the blocks allocated to that client. Before the prompt leaves your Mac, every other client’s name, domain and keyword is replaced with “[another client]”, and the same pass runs on the answer.
A block that overlaps two clients counts as time but is not described. No filter catches everything, so read the draft before you send it.
Yes. Pause from the menu bar for 15 minutes, 30 minutes, an hour, or until you resume. You can also list apps that are never recorded.
Recording is light. The heavier work is the analysis. With a cloud provider it happens off your Mac. With a local model it uses your Mac’s GPU and battery, so plug in for long sessions.
fractionalflow is a native Mac app and needs macOS 14 (Sonoma) or later. There is no Windows, iPhone or web version.
It is in early access while we finish the signed release. Join the waitlist and you get one email when the download opens.
fractionalflow is in early access on the Mac. Leave your email and you get one message when the download opens.
fractionalflow