# Iris

A blue-light filter and screen dimmer with PWM-free brightness control and 9 built-in presets — one-time $15 purchase after a free trial.

- **Category:** [Health](https://notchlist.vercel.app/category/health/)
- **Price:** $15 one-time (per major version), 7-day free trial
- **Open source:** no
- **Official site:** https://iristech.co/
- **Available via:** Direct
- **Requirements:** macOS; specific minimum version not published on the developer’s site. Also available for Windows.
- **Maker:** Daniel Georgiev

## Kitsmith's take

Beyond warming color temperature through the day and night, Iris also targets screen flicker: many displays dim by rapidly switching the backlight on and off (PWM), which Iris avoids by dimming through a different method. Nine presets (Reading, Programming, Sleep, and more) cover common scenarios, plus fully custom color/brightness combinations and ambient-light-matched brightness. $15 one-time per major version, with a 7-day free trial.

## Features

- **PWM-free dimming:** Reduces brightness without the backlight flicker some displays introduce at low brightness via PWM.
- **Gradual day/night shift:** Blue light is reduced gradually across the day rather than switching abruptly at a fixed time.
- **9 built-in presets:** Health, Sleep, Reading, Programming, Biohacker, Sunglasses, Dark, Movie, and Overlay modes, plus custom presets.
- **Ambient-light matching:** Automatically adjusts screen brightness to match the light in the room.

## FAQ

**Is Iris a subscription?**

No — it’s a $15 one-time purchase covering one major version, after a 7-day free trial.

**What does “PWM-free” mean?**

Some displays dim by rapidly flickering the backlight (PWM), which can cause eye strain for sensitive users; Iris dims without relying on that method.


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Hand-verified listing on Kitsmith: https://notchlist.vercel.app/apps/iris/