Lagmend — Terms of Use
Last updated: 11 November 2026
Lagmend is an iPhone app made by Spyridon Pikoulas. Using it is governed by Apple’s Licensed Application End User License Agreement (Apple’s standard EULA) and by these terms, which add what it says about Lagmend Pro.
Free and Lagmend Pro
The free version includes the light and sleep plan for one trip. Lagmend Pro unlocks unlimited trips, reminders through the trip, melatonin and caffeine timing, and the lock-screen widgets.
Subscriptions
Lagmend Pro is an auto-renewable subscription, billed weekly or yearly. Payment is charged to your Apple Account when you confirm the purchase. It renews automatically for the same period and price unless auto-renew is turned off at least 24 hours before the period ends, and your account is charged for the renewal within the 24 hours before that. Manage or cancel it in Settings > your name > Subscriptions; cancelling stops the next renewal, and Lagmend Pro stays until the end of the period you paid for.
The yearly subscription can start with a 7-day free trial for new subscribers. Unless you cancel at least 24 hours before the trial ends, it becomes a paid subscription and the yearly price is charged. Any unused part of a free trial ends when you buy a subscription.
One-time purchase
Lagmend Pro can also be bought with a single payment that never renews, and lasts for as long as Lagmend is offered on the App Store. It stays with your Apple Account and comes back through Restore on any iPhone signed in to it.
Prices and refunds
The App Store shows the price in your currency, with any taxes Apple applies, before you buy. Purchases are processed by Apple, so refunds are requested from and decided by Apple: request a refund.
Your data
What Lagmend keeps, and where, is in the Lagmend privacy policy.
Guidance, not medical advice
Lagmend’s plans follow published research on light, sleep and melatonin, worked out from the flights and sleep times you enter. Bodies differ, and how fast a body clock shifts varies from person to person, so treat a plan as guidance.
- Lagmend does not diagnose or treat any condition.
- Ask a doctor or pharmacist before taking melatonin, especially if you are pregnant, take other medicines or have a health condition. Melatonin needs a prescription in some countries.
- Do not drive or operate machinery when you are sleepy, whatever the plan says.
Warranty and liability
Lagmend is provided as it is, without warranty of any kind; check anything important it tells you before relying on it, and keep your own copy of data that matters. To the extent the law allows, we are not liable for indirect or consequential loss, including lost data, and our total liability is limited to what you paid for Lagmend. Nothing here limits rights you have as a consumer that cannot be limited.
Changes
We may change these terms or Lagmend’s prices; a change doesn’t affect a period you have already paid for. The date at the top shows the latest version. Danish law governs these terms.