Reconstruct your workday with private, offline time tracking

Kronolog makes your billable time unforgettable. Track your workday with scheduled screenshots, review what you worked on, and reconstruct billable hours offline and privately, without relying on a cloud-based service.

Available for macOS. Support for Windows and Linux is in development.

Kronolog reviewing a captured screenshot so you can log the project and task

How screenshot-based time tracking works

Step 1

Capture on your schedule

Kronolog takes screenshots only when you want. Set up your unique schedule via a cron expression.

Step 2

Review later

When you sit down to log time, walk back through the day instead of reconstructing it from memory or a forgotten timer.

Step 3

Log and export

Label the productive blocks, then export the hours for invoices, reports, or your own records.

Why people love Kronolog

Stop guessing

Whether you invoice clients or keep internal time logs, a visual history beats a live timer you forgot to start. See what you actually worked on, then fill the timesheet.

Fully offline, always private

No account, no cloud, no telemetry. After a one-time activation, Kronolog runs fully offline. Your frames never leave your device.

Insightful, exportable data

Quick insights on reported time, plus exports you can drop into invoices, timesheets, or further analysis.

Not another time tracker

Regular time tracking software watches the clock while you work. Kronolog helps you remember the work when you sit down to log hours — for client invoices or your own records.

Typical tools

Live timers you have to start and stop all day

Kronolog

Screenshots on your schedule, so you can log time after the fact

Typical tools

Always-on monitoring built for managers and teams

Kronolog

A private tool for logging your own hours — no manager dashboard

Typical tools

Cloud accounts, data-sharing with third-party AI, and monthly subscriptions

Kronolog

Fully offline after activation, with a one-time lifetime license

Buy once, use forever

$20/ license

Already have a license? Download for macOS.

Kronolog will not move to a subscription model. License includes all future updates. One license per device/platform. Terms apply.

Questions before you buy

Who is Kronolog for?+
Anyone who needs accurate time logs from a private visual history of their work — whether you invoice clients, keep internal records, or both. It is a personal, one-device app, not a team attendance or employee-monitoring system.
Do the screenshots leave my computer?+
No. Kronolog stores frames on disk. There is no account and no cloud sync. The app only goes online for the one-time license activation and whenever you choose to check for updates.
Why is Kronolog not on the Apple Store?+
We prefer the convenience of a direct download. The app has however been notarized by Apple and is safe to download.
What happens after I pay?+
We email your license key. Download the macOS app and enter the key on first launch. After that, Kronolog works offline.
What does a license cover?+
One device, currently macOS. The license is non-transferable. All future updates for that license are included, and we will not move Kronolog to a subscription.
How do I get updates?+
In the app, choose Check for Updates from the menu. Updates are included with your license—there is no subscription. You can also download the latest installer from the website anytime.
Can I get a refund?+
You can request a refund within 14 days if you have not activated your license yet. After activation, the sale is final. If something does not work, email support and we will help.
What formats can I export?+
You can export your time logs as CSV, Excel (.xlsx), or JSON.
When can I download Kronolog for Windows or Linux?+
Those builds are not ready yet. They are in development and scheduled for release in early 2027. A macOS license will not cover a later Windows or Linux install; each platform needs its own license.

Still stuck? Email support or open an issue on GitHub.