Coming to macOS
Your Things 3 data tells a story. Finally, you can read it.
Seryn turns your task history into rich productivity analytics. On your Mac. Offline. Forever.
100% on-device · Read-only SQLite + DuckDB · Zero network
We don't collect your data. We don't have servers. We don't even have analytics on this page.
What you'll get
Spot the hours you do your best work
Hourly productivity peaks, focus sessions, and the quiet pockets of deep work you never noticed.
See 52 weeks of your work in one glance
A GitHub-style completion heatmap. Weekly breakdowns. The rhythms you never knew you had.
Your Things database never leaves your Mac
Read-only ingest. No network entitlement. No servers. No telemetry. Ever.
Common questions
Will Seryn send my data anywhere?
No. Seryn reads your Things database in read-only mode and has no network entitlement. It cannot connect to the internet even if it wanted to. Your data never leaves your Mac.
How much will it cost?
$14.99, one-time. No subscription. Available on the Mac App Store and as a direct DMG download. Two distribution channels, same privacy promise.
When is it launching?
We're in final testing. Launching soon — join the waitlist to be first to know.
Do I need Things 3 to use it?
Yes. Seryn reads your existing Things 3 database. Your data stays untouched — Seryn only reads, never writes to your Things database.
What analytics does Seryn provide?
Completion heatmaps, hourly productivity peaks, flow intensity tracking, project health monitoring, habit streaks with 90-day drill-down, weighted throughput, and guided daily review. All computed locally on your Mac.
Can I try it before buying?
Yes. Seryn includes a demo mode with synthetic fixture data, so you can explore all analytics before connecting your own Things database.
Launching soon.
Join the waitlist to get early access and be the first to know when Seryn launches on the Mac App Store.