JUYUE

In the middle of a flare-up it's hard to tell what caused it. JUYUE puts three things on one timeline: the air in your home, the official station nearby, and the symptoms you log. The sensor uploads readings on its own — you just tap to log when you feel unwell. Over time, which reading rises before a flare-up becomes obvious. ■ Readable at a glance PM1.0 / PM2.5 / PM10, formaldehyde, temperature, humidity, pressure. Every number comes with what it means — smaller particles reach deeper into the body, so you don't have to look up the difference between 8 and 14. ■ Allergen breeding conditions Estimates whether conditions favour dust mites and mould from temperature and humidity, and shows the reasoning. This estimates environmental conditions; it does not measure allergen levels in the air. ■ Share with family One invite code lets family see the same device's readings. Other people's…