UV Index & SPF: Burnline

Burn timer, UV & vitamin D

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Your burn line, live all season: the full UV day curve, your shade window, and a record of every burn-free day. Vitamin D mode through winter. Know exactly how long you can stay out before you burn. Burnline turns the UV index into the only number that matters: minutes. Your skin type, today's UV, the SPF you actually put on — one countdown, updated as the sun moves. TODAY'S BURN LINE See your time to burn right now, and the hour it gets dangerous. The full day curve shows when to go out and when to find shade. BUILT FOR YOUR SKIN, NOT AN AVERAGE Fitzpatrick skin type, not a generic timer. And because almost nobody applies sunscreen at the lab rate, Burnline models what SPF 30 really gives you rather than what the bottle claims. WORKS WITH NO SIGNAL The day's UV curve is computed on your phone from the sun's position. On a beach, abroad, with no roaming — it still works. YOUR SEASON, RECORDED Every day you got it right. Burn-free days, time outside, and the record that builds over a summer. VITAMIN D, THE OTHER SIDE In winter the question flips: how long do you need OUT to make any vitamin D at all. Burnline answers that too. SUBSCRIPTION Burnline is a subscription app. Today's burn line is free; the full day curve, the season record and vitamin D mode require Burnline Pro, offered as a monthly or annual subscription with the price shown before you buy. Payment is charged to your Apple ID at confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends. Manage or cancel in your Apple ID settings. Burnline gives estimates based on published UV and dermatology research. It is not medical advice and does not diagnose or treat any condition. If you have a skin condition or take photosensitising medication, talk to a doctor. Privacy: https://burnline-web.vercel.app/privacy Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://burnline-web.vercel.app/support

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Andrej Sazdovski, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Contact Info
    • User Content

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • User Content
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Andrej Sazdovski
Size
45.7 MB
Category
Weather
Compatibility
Requires iOS 16.0 or later.
  • iPhone
    Requires iOS 16.0 or later.
  • iPad
    Requires iPadOS 16.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
9+
  • 9+
  • Learn More
  • Contains
    User-Generated Content
    Health or Wellness Topics
In-App Purchases
Yes
  • Burnline Pro — Monthly $6.99
  • Burnline Pro — Yearly $34.99
  • Learn More
Copyright
© 2026 Andrej Sazdovski
  • Developer Website
  • Privacy Policy

    • More by Andrej Sazdovski