Time tracking, done properly.

The problem

Tracking hours is the easy part.

Most time trackers stop at "hours × rate = invoice." Real billing is rarely that simple. Afterhours multipliers, holiday rates, client retainers, progressive thresholds — the moment your billing gets interesting, your usual tracker gets in the way.

Proper billing

Stundu handles the non-trivial cases.

The billing engine uses standard MathJSON expressions — if you can describe the rule, Stundu can apply it. Fixed rate, dynamic rate, retainer with an overtime threshold: all supported. Define it once, and every entry is billed correctly.

Features

Everything you expect. Then some.

• Timer with description and tags
• Billing rates per tag with full history and effective dates
• Afterhours and holiday rate modifiers
• Expression-based rates for complex billing logic
• Proper offline mode — timer and entries work without a connection, sync automatically on reconnect
• Import and export in open formats (stundu CSV, Timewarrior, Ledger) — no lock-in
• Multi-lingual interface
• CLI app — parallel interface to the same data and billing engine, no migration

Stundu is not accounting software and not an invoicing service — both are disciplines of their own, shaped by local tax rules and legal requirements. Stundu's scope is the billing calculation, done properly.