Privacy policy

Privacy Policy

Last updated: November 11, 2026

BrightMatter LLC (“Company”, “we” or “us”) respects your privacy. This Privacy Policy explains what information we collect, why we collect it, and how you can access, update, export and delete it when you use our mobile applications, including Sola: UV Index & Sun Exposure for iOS, Apple Watch and Android (the “App”), and our website https://getsola.com (the “Website”). By using the App or the Website, you agree to this Policy.

In short: we collect only the data the App needs to work, and your email address only when you write to us. We do not operate servers that store your sun-exposure or health data, we do not sell your data, and we do not use it for advertising.

1. Information we collect

Information you enter in the App

To calculate your UV dose, time in the sun, and vitamin D, the App uses information you provide:

  • Skin type (Fitzpatrick scale), current tan level, sunscreen SPF (if used), and the share of skin exposed (clothing/body exposure).
  • Weight and height, used to estimate body surface area for the vitamin D calculation. You can type them in or, if you choose, retrieve them from your device’s health platform.
  • Sun session details: start and end times, flip intervals, reminders, and the location of each session.
  • Vitamin D amounts you add manually.

The App also derives your UV dose (as a percentage of your Minimal Erythemal Dose) and estimated vitamin D synthesis from this information and the local UV index.

Health platform data (only with your permission)

iOS and Apple Watch (Apple Health). With your permission, the App:

  • reads your weight, height, Time in Daylight, UV Exposure and Dietary Vitamin D. Time in Daylight (which Apple Watch records using signals that include its ambient light sensor and motion data) is used to detect outdoor sessions automatically;
  • writes UV Exposure and Dietary Vitamin D to Apple Health, so your sun-session results can be saved there.

Android (Health Connect). With your permission, the App uses Health Connect to:

  • Read your weight and height, to pre-fill the body measurements used in the vitamin D calculation (only if you choose “Retrieve from Health”).
  • Read dietary vitamin D intake (Nutrition), so vitamin D you log in other apps can be included in your daily total (only if you turn on “Include vitamin D from Health”).
  • Write vitamin D (Nutrition) records, so the vitamin D estimated for your sun sessions, and amounts you add manually, can be saved to Health Connect (only if you choose to). You can delete these records in the App or in Health Connect.
  • Read exercise sessions (such as walks, runs, rides and hikes), to detect outdoor activity and add it to your session history so your UV exposure outdoors can be tracked (only if you turn on “Detect outdoor sessions”). Only the activity’s type, start time and end time are used. If you allow access to an activity’s route, only its starting point is used, to determine the local UV index.
  • Read historical data and read in the background, so older entries (beyond 30 days) can be included in History and Metrics, and detected activities can be picked up while the App is closed.

The App does not read steps, heart rate, sleep or any other health data types. You can change or revoke these permissions at any time in Apple Health, Health Connect or your device settings.

Location

The App uses your device location to retrieve the UV index and forecast for where you are. Coordinates are sent to Apple’s WeatherKit service to obtain the forecast, and to Apple’s geocoding service to show a place name. Each saved session stores its own location on your device. We do not operate servers that store your location.

Purchases

Subscriptions and purchases are processed through RevenueCat, which interacts with the Apple App Store or Google Play on your behalf to confirm and manage your purchase and entitlements. Your payment card details go to Apple or Google and never reach us. RevenueCat receives purchase and subscription status information and an anonymous app user identifier. See RevenueCat’s privacy policy for details.

Usage analytics

We use Google Firebase Analytics to understand how the App is used and to improve it. This data is not linked to your name or email address, and it is not used for advertising or tracking across other companies’ apps and websites.

When you contact us

If you write to us by email or through the Website contact form, we receive your email address and the content of your message, and we use them only to respond to you and to keep a record of the correspondence. We do not require an account, name, phone number or mailing address to use the App.

Website

The Website uses analytical cookies to count visitors and see how they move around the site. You can block cookies in your browser settings; the Website will still work.

2. How we use your information

  • To calculate and display your UV dose, safe sun time, vitamin D estimates and session history, and to send the timers and reminders you set up.
  • To provide, maintain and improve the App’s features and to fix problems.
  • To confirm your purchases and unlock the features you have paid for.
  • To respond to your questions and provide support.
  • To keep the App and Website secure, and to investigate fraud or violations of our Terms of Use.
  • To send you service-related messages (for example about security or changes to this Policy). We do not send marketing email unless you ask us to.

Limited use of health data. Data obtained through Apple Health or Health Connect is used only to provide and improve the App’s user-facing features. We do not use it for advertising, we do not sell it, and we do not transfer it to others except as described in Section 4.

3. Lawful bases for processing

Where data protection law applies, we process your information based on your consent (for example, when you grant health or location permissions, which you can withdraw at any time), on our contract with you (to provide the App you have chosen to use), and on our legitimate interests (for example, improving and securing the App). Questions about these bases can be sent to the address in Section 11.

4. Sharing your information

We do not sell your personal information, and we do not share it with advertisers. We share it only in these cases:

  • Service providers acting on our behalf, solely to operate the App: Apple (WeatherKit, geocoding, iCloud sync), Google (Firebase Analytics, Google Play), and RevenueCat (purchases), each under their own terms and privacy policies.
  • Legal disclosures, where we believe in good faith that disclosure is required by law or legal process, or is necessary to protect the rights, safety or security of you, us or others.
  • Business transfers, if the Company is involved in a merger, acquisition or sale of assets. We would give affected users notice before personal data becomes subject to a different privacy policy.

5. How we store your information

On your device and in your own cloud accounts. Your profile, settings and session history are stored on your device. On iOS, if you turn on iCloud sync for History, your session history (including each session’s location) syncs through Apple CloudKit in your own iCloud account under Apple’s privacy terms; we cannot access it. On Android, your data may be included in your device’s backup if you have enabled Android backup.

Security. We take industry-standard measures to protect the information we handle and limit access to those with a genuine need. No method of transmission or storage is completely secure, so we cannot guarantee absolute security.

International transfers. Our service providers (such as Apple, Google and RevenueCat) may process data in the United States and other countries, which may have different data protection laws than yours. Where required, they rely on lawful transfer mechanisms such as Standard Contractual Clauses.

Retention. Data on your device stays there until you delete it or uninstall the App. Email correspondence is kept for as long as needed to handle your request and for legitimate business or legal purposes. Analytics data is kept according to our analytics provider’s retention settings.

6. Accessing, correcting and deleting your information

You can:

  • edit your profile and session data in the App, and delete sessions and manually entered data there;
  • delete the vitamin D, UV Exposure and other records the App wrote to Apple Health or Health Connect, in those apps;
  • revoke health or location permissions at any time in your device settings;
  • turn off iCloud sync and delete your iCloud data in your device’s iCloud settings;
  • delete all App data by uninstalling the App.

You may also email us at support@getsola.com to request access to, correction, deletion or an exported copy of any information we hold about you, including correspondence. We will respond within 30 days.

If you are in the EU/EEA, the UK, California or another region with data protection rights, you may have additional rights, including to object to or restrict processing and to complain to your local data protection authority. Contact us to exercise them.

7. Children

The App is not directed to children under 13, and we do not knowingly collect personal information from them. If you believe a child has provided us information, contact us and we will delete it.

8. Not medical advice

Sola is an informational tool. It is not a medical device and does not provide medical advice, diagnosis or treatment. Consult a qualified healthcare professional about your skin health and vitamin D needs.

9. Third-party websites and services

The App and Website may link to third-party websites. They have their own privacy policies, and we are not responsible for them. This Policy does not apply to information collected by third parties.

10. Changes to this Policy

We may update this Policy from time to time. We will post the new version here with a new “Last updated” date and, where changes are material, notify you in the App or on the Website. Continued use after an update means you accept the revised Policy.

11. Contact

Questions, comments and requests about this Policy:

BrightMatter LLC
Attn: Customer Support
500 W Hickman Rd, #732
Waukee, IA 50263

support@getsola.com