Open Window
Instant air intelligence for your home
What it does
Is it safe to open your windows? Get an instant YES/NO verdict based on real-time AQI, humidity, and heat data. Protect your home.
Does a similar job
all alternatives →
- ASA subtly obvious e-paper room air monitorNov 2025 · nicolin-dora.ch · ▲65
In the cold season we tend to keep the windows closed. The air gets "stale": humidity often rises above 60 %, which can harm our wellbeing and promote mould. At the same time the CO₂ level in the air increases, which impacts our ability to concentrate. So I built a room air monitor that stays unobtrusive as long as everything is in the green zone, but becomes deliberately noticeable once thresholds are exceeded. For my personal love of statistics I also visualise the measurements in a clear dashboard.
Ventilate · At the right timeAug 2026 · getventilate.app · ▲17Beat the heatwave: when to open, close, and use a fan
More dev tools this month
the category →
OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 6d ago · opentrailpaper.com
Lettertrace▲375Track your AI visibility for free (using your own API keys!)
Dev tools · 29d ago · lettertrace.com
Source: Product Hunt launch ↗
