# OIO Circadian — Korrus Inc > Personalized circadian lighting schedules for improved sleep and energy. (iPhone/iPad app by KORRUS, INC.) - Source: https://appshunter.io/ios/app/oio-circadian/id6739509200 (this page in markdown: same URL + `.md`) - Developer: [KORRUS, INC](https://appshunter.io/developer/1639435894) - Category: Productivity - Price: Free - Rating: 1.80/5 from 5 App Store ratings · 2 written reviews indexed - Age rating: 17+ - Requires: iOS 17.0 · 88 MB - Languages: American English - Released: 2025-08-28 - Data updated: 2026-07-28 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/oio-circadian/id6739509200/reviews.md ## What is OIO Circadian? SEE YOUR CIRCADIAN LIGHTING IN ACTION The Home screen features our Spectral Display, showing you the wavelengths of light that you receive during each of our three light modes; Day, Evening and Night. It’s a visual guide to the type of light spectrum that supports your health. PERSONALIZED LIGHTING SCHEDULES FOR SLEEP AND ENERGY Just tell the app when you want to wake up. OIO creates a custom circadian lighting schedule to help you fall asleep faster, wake up more refreshed, and maintain energy throughout the day. No guesswork—just better light, automatically. INSTANT SCENE CONTROL, ONE-TAP ROOM ACCESS Quickly activate your favorite smart lighting scenes right from the Home screen. For full control, tap into individual rooms and adjust brightness, spectrum, and schedules instantly. WHOLE-HOME LIGHTING CONTROL Manage all your OIO Bulbs in one place. Sync your entire home to a single wellness lighting schedule or create unique settings for each space—it’s all customizable. EASY SETUP OIO Bulbs are detected and connected in just a few taps. Group lights into rooms, adjust light schedules, and start using circadian lighting right away—no hub required. UNLOCK THE BENEFITS OF HEALTHY LIGHT ## Key features - Spectral Display for light wavelengths - Personalized circadian lighting schedules - Instant smart lighting scene control - Individual room lighting adjustment - Whole-home lighting management - Easy bulb setup and room grouping ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/oio-circadian/id6739509200/reviews.md ### 1/5 — Awful app UX, but good hardware. *2026-06-17* The OIO app is extremely frustrating to use. Adding bulbs is almost impossible—it often takes multiple unsuccessful attempts before a bulb finally connects, and each attempt can take 4–5 minutes. What should be a simple setup process turns into a lengthy troubleshooting session. What’s even more disappointing is that the bulbs can be added to Apple Home almost immediately, which suggests the issue is with the OIO app itself. However, if you use Apple Home, you lose access to the circadian lighting features, which are the primary reason I purchased this product in the first place. The hardware seems promising, but the app experience is so unreliable and difficult that it significantly diminishes the value of the product. Overall, I’m very disappointed - with the price point of the hardware being so high,the app should be top notch. ### 5/5 — The best smart light experience *2026-02-04* This is the best smart light bulb I’ve tried, and I’m using it a ton with my newborn daughter. The spectral information is absolutely clutch for not disrupting her clock at night. Two requests on the app side: 1) if the animation on launch could be faster and/or skipped, that would be great (I usually want to change the lights pretty urgently when I click on the app), and 2) I’ve got a schedule set up for when to transition to night mode, but it doesn’t seem to work— I always have to manually change it. Overall, though, awesome product: this is what circadian tech should be ## Frequently asked questions about OIO Circadian ### What is OIO Circadian? OIO Circadian is a productivity app designed to help users manage their smart lighting for improved sleep and energy. It visualizes light wavelengths and creates personalized schedules based on wake-up times. ### How does OIO Circadian help with sleep and energy? By creating custom circadian lighting schedules, OIO Circadian aims to help users fall asleep faster, wake up more refreshed, and maintain energy throughout the day through optimized light exposure. ### Can I control individual lights with OIO Circadian? Yes, you can tap into individual rooms to adjust brightness, spectrum, and schedules for specific lights, offering granular control over your home's lighting. ### Does OIO Circadian require a hub? No, OIO Circadian does not require a hub. OIO Bulbs are detected and connected directly through the app with just a few taps. ### What devices does OIO Circadian support? Based on the provided data, OIO Circadian is supported on iPhone devices. ### How often is OIO Circadian updated? The latest version of OIO Circadian is 1.1.1, and it was last updated on April 28, 2026. This suggests a relatively recent update frequency. ### What is the age rating for OIO Circadian? OIO Circadian has an age rating of 17+, indicating it may contain content suitable for mature audiences. ### Does OIO Circadian have ads? No, OIO Circadian does not contain advertisements, as indicated by the 'hasAds' flag being false. ## Version history (last 5 releases) ### 1.1.3 — 2026-07-27 Adding a new light is now more seamless, with better handling of tricky Wi-Fi and network conditions. ### 1.1.1 — 2026-04-28 Improvements and bug fixes to In-app notifications Custom event handling ### 1.1.0 — 2026-03-19 Updated Night Mode functionality. Lights can now automatically transition to Night Mode just like other modes. Users can choose to keep the previous behavior so Night Mode is only used when turning on from off if they prefer. ### 1.0.21 — 2025-11-10 Various updates and improvements ### 1.0.19 — 2025-10-22 Various Updates and improvements ## Apps similar to OIO Circadian | App | Rating | Price | Category | | --- | --- | --- | --- | | [Crowdcast Mobile](https://appshunter.io/ios/app/crowdcast-mobile/id1119071572) | 4.7 (27,975) | Free | Productivity | | [Snipd \| AI Podcast Player](https://appshunter.io/ios/app/snipd-ai-podcast-player/id1557206126) | 4.7 (1,132) | Free | Productivity | | [Fellow - AI Meeting Assistant](https://appshunter.io/ios/app/fellow-ai-meeting-assistant/id1477264742) | 3.2 (24) | Free | Productivity | | [Daylight Capture](https://appshunter.io/ios/app/daylight-capture/id6502664563) | 4.6 (13) | Free | Productivity | | [Brainwaves -- Binaural Beats](https://appshunter.io/ios/app/brainwaves-binaural-beats/id450655712) | 4.4 (3,234) | Free | Productivity | | [Wispr Flow: AI Voice Keyboard](https://appshunter.io/ios/app/wispr-flow-ai-voice-keyboard/id6497229487) | 4.8 (12,060) | Free | Productivity | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-28.*