Adaptive Lighting is a feature brought by the iOS 14 update to HomeKit. The new feature allows your home's lights to adjust their intensity and warmth all through the day. Depending on the settings of your HomeKit Adaptive Lighting, your home's illumination can automatically alter its white balance to promote relaxation and encourage productivity without any intervention from the user.

For instance, your home's lights may take on a warm and yellow hue during mornings, which is almost the same thing you often get from a sunrise. At midday, your HomeKit Adaptive Lighting can cause your home's illumination to change its hue into something cooler, adding a bit more blue light to the blend, which energizes you, as well as promote productivity and alertness. Around evening, the blue light gradually disappears and is replaced by a warmer hue, which helps you wind down and relax at the end of your day.

One of HomeKit Adaptive Lighting's best aspects is that in general, it does not require any input from users to adjust your home's illumination throughout the day. As long as your home's lights support Adaptive Lighting, it is displayed automatically within your Home app. You can also choose the lights that will display a particular hue at a given time of the day from within your Home app. From here, you can also set the brightness of the light and choose its color. The app has an intuitive control interface so the learning curve is not that difficult.

Before using your HomeKit Adaptive Lighting to automatically adjust your home's lights throughout the day, you need to ensure you have all the necessary things for the feature to work properly. For one, you need an iPad or iPhone running iPadOS 14 or iOS 14, as well as an updated HomeKit light with Adaptive Lighting support. At present, there is only one light fixture manufacturer on the market that supports and features Adaptive Lighting. Eve Systems, a German smart home automation developer, produces a smart light strip with Adaptive Lighting support which can automatically change colors all throughout the day. The company issued a firmware update recently to the Eve Light Strip, enabling the HomeKit Adaptive Lighting feature.

Signify, a lighting product manufacturer formerly known as Philips, also expressed its intention to bring the HomeKit Adaptive Lighting feature to the company's Philips Hue bulbs later this year. With this feature, Philips Hue bulbs will also be able to automatically adjust the brightness and hue of your home's lights throughout the day.