# MyCircadianApp — Track sunlight & wellness

> Track sunlight, UV, vitamin D, and circadian rhythms for health optimization. (iPhone/iPad app by Sarah Kleiner Wellness.)

- Source: https://appshunter.io/ios/app/mycircadianapp/id6538168795 (this page in markdown: same URL + `.md`)
- Developer: [Sarah Kleiner Wellness](https://appshunter.io/developer/1756991836)
- Category: Health & Fitness, Weather
- Price: Free with in-app purchases
- Rating: 4.90/5 from 264 App Store ratings · 209 written reviews indexed
- Age rating: 12+
- Requires: iOS 15.1 · 56 MB
- Languages: American English
- Released: 2024-10-02
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/mycircadianapp/id6538168795/reviews.md

## What is MyCircadianApp?

MyCircadian helps you optimize your health by tracking sunlight exposure, UV index, vitamin D synthesis, and circadian rhythms. Log sun sessions, monitor light levels, and get personalized guidance based on your skin type, weather, and location. The app features a compass for sunrise/sunset directions and a lux meter to monitor light quality. Sync with natural light cycles to enhance your well-being, boost your mood, and support healthy vitamin D production. Perfect for anyone looking to balance modern life with natural rhythms.

Terms of Use: https://mycircadianapp.com/terms-of-use

## Key features

- Sunlight exposure tracking
- UV index monitoring
- Vitamin D synthesis tracking
- Circadian rhythm monitoring
- Personalized guidance
- Sunrise/sunset compass
- Lux meter

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Yearly | $36.00 | per year |
| Monthly | $3.99 | per month |
| Yearly | $36.00 | per year |
| Monthly | $3.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime | $99.00 | one-time |
| Lifetime | $199.00 | one-time |
| Lifetime | $179.00 | one-time |


## What do users think of MyCircadianApp?

Overall sentiment: positive

**Pros**

- 🌟 Comprehensive features
- 👍 User-friendly interface
- 🌞 Helpful for circadian health
- 📊 Detailed data and tracking
- 🎨 Aesthetically pleasing design
- 🔍 Useful lux meter
- 🗓️ Convenient moon and sun tracking
- 🏆 Life-changing for some users

**Cons**

- 🔍 Could use more educational content
- 📱 Occasional glitches or bugs reported

**Commonly reported bugs**

- Login screen freezes
- Incompatibility with older devices

**Most requested features**

- Ability to manually log sun sessions and vitamin D sources
- Option to view upcoming day's sunrise/sunset times

## Recent user reviews (10 of 209)

All indexed reviews: https://appshunter.io/ios/app/mycircadianapp/id6538168795/reviews.md

### 5/5 — Amazing!!

*2026-08-24, version 1.5.0*

I've never ever written a review for an app before, but this one deserves it! This app has been incredible with so much information. I've really gotten into circadian health and trying to understand it. Sarah's app, along with her IG and all of the resources she gives, has been so valuable in my journey. I have the paid version and it is worth every cent, with SO much information! Even the free version is helpful, but the paid is top notch!

### 5/5 — Wonderful App

*2026-07-02, version 1.4.0*

This app is the best for tracking all the important aspects of circadian rhythm to maintain a circadian lifestyle! I have been using it since it launched and it keeps getting better! Great job SKW!!!

### 3/5 — Contact does not work….

*2026-06-12, version 1.3.0*

Overall this app is stellar. Although, when attempting to make contact with developer no link works here. 

Simple question:  Does the app have ANY alarm clock functions, like wake up to see Sunrise, when UV-A & UV-B is available???  

Please fix your links. The link gets you to a page, but no link works after that.

### 3/5 — No idea what is going on with this app.

*2026-04-28, version 1.3.0*

But there’s no way the max UVI is 5 here in Lagos today. 
It would appear following this app will lead to getting burnt and quick!

### 5/5 — 🌞the LIGHT and the WAY🌞

*2025-08-01, version 1.2.0*

Shout-out to Zaid Dahhaj who recommended this app! 

A practical tool - the Swiss Army knife of sunlight tracking apps! Has all the necessities while keeping it simple.

Let this app guide you back into circadian alignment. Good health and longevity depends on it. 

Do your own research, you’ll find we’ve been kept in the dark about the healing properties of the sun! Understand, the sun is to be respected and received in proper order. This app will enable you to abide by the sun in the right timing, dose and context. 

This app is now my trusted daily companion! Gave the free trial a chance [the paid full access version] - its additional features are worth the expense if one can afford it. Like having the ability to log accumulated Vitamin D exposure within the app is helpful for someone with health issues, like me, who needs to monitor it closely over the coming months. 

Sarah also provides important education thru her app, always more to learn. Check-out Zaid Dahhaj’s Solar Callus Guide to complement this app!

Consider, who is there for you everyday of your life…day after day without fail? Who nourishes the whole earth with its intelligent rays? Not a mystery, look up! Plain to see. Thanks and Praise to RA! The very LIGHT and The Way🙏🏽
🌞🌞🌞 🌞🌞🌞 🌞🌞🌞

### 5/5 — An App I Didn’t know I needed!

*2025-08-01, version 1.2.0*

I’m just beginning to learn about the importance of circadian rhythm so this handy little tool will be awesome to have!

### 5/5 — Unexpectedly Useful

*2025-08-01, version 1.2.0*

I’ve been implementing a lot of circadian aligned lifestyle changes since finding Sarah Kleiner and this app makes it so much easier to do. I know exactly when I need to get outside so I’m able to plan my mornings with ease and get the maximum benefit from the early sunlight. The app is visually pleasing, easy to use and includes pretty much every feature you could possibly need. I use it multiple times a day every single day.

### 5/5 — Best app for circadian rhythm!

*2025-07-31, version 1.2.0*

This app has been so helpful for me as I have been working on my high leptin levels. It lets me know when I should be outside in the morning and when it’s best to go outside for my midday sun! The Lux meter is AWESOME for finding the right balance of light at night!

### 5/5 — Great tool for circadian alignment

*2025-07-31, version 1.2.0*

The Lux meter is especially useful. I appreciate that you can also see the sunrise, sunset, and UV rise times a week ahead, too. Great app!

### 5/5 — Light was the missing piece

*2025-07-31, version 1.2.0*

I have serious histamine intolerance that I’ve been trying to manage for years. In the last year I noticed if I was on my phone too much in the mornings, I was destined for a flare up. Now, with the information from Sarah Kleiner I can see when UVA rays are available and I recently realized that getting UVA rays MAKES MY FLARE UP GO AWAY. Thanks to this app, I’m locked in on when and how to utilize light for my health. I can’t wait to try it out during winter to see how much Vitamin D I am getting as well. Love the app, and I highly recommend.

## Frequently asked questions about MyCircadianApp

### What does MyCircadianApp do?

MyCircadianApp helps you optimize your health by tracking sunlight exposure, UV index, and vitamin D synthesis. It also monitors your circadian rhythms and provides personalized guidance based on your individual factors and environmental conditions.

### What are the key features of MyCircadianApp?

Key features include tracking sunlight sessions, monitoring UV index and vitamin D synthesis, and observing circadian rhythms. The app also offers personalized guidance, a compass for sun directions, and a lux meter to measure light quality.

### Is MyCircadianApp free to use?

The application is free to download and use, but it does offer in-app purchases. This means some features or content may require a purchase to access.

### Who is MyCircadianApp for?

This app is perfect for anyone looking to balance modern life with natural rhythms and improve their overall well-being. It's designed for individuals interested in understanding and optimizing their relationship with natural light.

### How does the app help with vitamin D production?

The app tracks your sunlight exposure and UV index, allowing you to monitor your potential for vitamin D synthesis. By providing personalized guidance, it helps you understand how to optimize your sun exposure for healthy vitamin D production.

## Version history (last 5 releases)

### 1.5.0 — 2026-08-11

Performance improvements and bug fixes.

### 1.4.0 — 2026-07-01

Performance improvements and bug fixes. New UV Index widget.

### 1.3.0 — 2025-12-19

Minor improvements and bug fixes. Better performance and stability.

### 1.2.1 — 2025-08-27

You can now adjust your environment (city, water, snow) to make UV index readings more accurate.

### 1.2.0 — 2025-07-15

We added a new screen to view hourly UVI and made the app more stable.

## Apps similar to MyCircadianApp

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| [myCircadianClock](https://appshunter.io/ios/app/mycircadianclock/id982118665) | 2.3 (250) | Free | Health & Fitness |
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## Related topics

[my circadian app](https://appshunter.io/ios/topics/my-circadian-app) · [my circadian rhythm](https://appshunter.io/ios/topics/my-circadian-rhythm) · [circadian rhythm](https://appshunter.io/ios/topics/circadian-rhythm) · [circadian](https://appshunter.io/ios/topics/circadian) · [circadian life](https://appshunter.io/ios/topics/circadian-life) · [circadian rhythm light meter](https://appshunter.io/ios/topics/circadian-rhythm-light-meter) · [my circadian clock](https://appshunter.io/ios/topics/my-circadian-clock)

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*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 2026-08-29.*