Metric
A productivity timer and home-screen clock widget that displays time in decimal units (10 hours/day, 100 minutes/hour, 100 seconds/minute) for engineers, designers, and productivity enthusiasts.
Productivity enthusiasts, engineers, and designers who prefer metric thinking and want cleaner time math
- Pomodoro and focus timer that counts down in decimal time
- Decimal clock widget for phone home screen and Apple Watch
- Built-in converter between standard (24h) and decimal time for scheduling with normal-world people
- Project time tracking that logs decimal hours for invoicing and personal logs
An HN thread (82 points, 51 comments) just actively debated alternative time systems, and modern widget APIs make shippable clock faces trivial to deploy today.
HN thread on metric time hit 346 points / 336 comments (much higher than the 82 cited) and several commenters say they use decimal/French Republican time as their daily default, showing a real-but-tiny engaged audience; however TAM is inherently narrow (curious engineers/designers, not mainstream).Metric Time | Hacker News ↗Decimal Time Clock Widget — Privacy-Focused Productivity App | Unclouded ↗
At least four existing decimal-clock products already ship: DecimalClock iOS app, Decimal Clock on Google Play (krass), F-Droid 'Decimal Time Clock Widget', and the Unclouded listing — so the original 'wide-open market' (9) assumption is overstated.DecimalClock on the App Store ↗Decimal Time Clock Widget | F-Droid ↗
The leading iOS competitor (DecimalClock) is priced $2.99 one-time yet 'hasn't received enough ratings or reviews to display an overview' ~2 weeks after launch, a strong indicator of very low conversion volume in this niche.DecimalClock on the App Store ↗
Interest has persisted since the French Revolution (~1793) and the 2023 HN thread is still referenced, so the topic is durable, but it remains a curiosity/toy rather than an essential daily utility, capping long-term growth.Metric Time | Hacker News ↗Decimal time - Wikipedia ↗
The competing DecimalClock shipped v1.0 on 2025-10-22 and v2.2 on 2025-10-29 as a 1.6 MB utility, demonstrating the app+widget is genuinely trivial to build and update with modern widget APIs.DecimalClock on the App Store ↗