Terms of Use
1. The agreement that governs the App
E6B Pilot Computer is published by Liana Solutions Pty Ltd, Australia. It is distributed through Apple's App Store, and your use of it is governed by Apple's Licensed Application End User License Agreement (the standard EULA).
This page adds no terms of its own. It exists to tell you plainly what the App is, what it is not, and how purchases and support work. Where anything here appears to conflict with the standard EULA, the standard EULA governs.
2. Safety — please read this one
For training and supplemental situational awareness only. Not for use as the sole basis for flight planning, performance, or operational decisions. It is not an approved flight planning tool, electronic flight bag (EFB), or primary source of aeronautical information. Always use current aircraft documents, an official briefing, and pilot judgment.
The App computes results from the figures you enter. It has no way to know whether those figures are correct for your aircraft on the day, and it does not check them against any authoritative source. You remain responsible for every operational decision you make.
Sample data is sample data
The App ships with one aircraft profile labelled “Cessna 172 (Sample)”. It exists so that Weight & Balance works the first time you open it. Its figures are representative training values — they are not taken from any Pilot's Operating Handbook and must never be used to plan a real flight. Build a profile from your own aircraft's current documents before relying on any result.
Weight & Balance results
A saved loading freezes the aircraft figures and the results as they stood when you saved it. That is deliberate: a record you relied on should not change underneath you when you later edit the profile. It also means an old saved loading reflects an old profile — check the aircraft figures on any record before reusing it.
3. Purchases
- Pro is a one-time purchase, not a subscription. There is nothing to cancel and nothing that renews.
- Apple processes the payment. We never see your payment details.
- Restoring. Your unlock is tied to the Apple Account that bought it. Use Settings → Restore purchase in the App on any device signed into that account.
- Refunds are handled by Apple, under Apple's terms, through reportaproblem.apple.com. We cannot issue refunds for App Store purchases ourselves, and we make no refund promise of our own beyond what Apple provides.
The free calculators remain free and are not time-limited. What Pro unlocks is listed on the E6B page.
4. Availability and changes
The calculators need no network connection and the App is built to work offline. Buying or restoring Pro, syncing through iCloud, opening the links in Settings and sending usage analytics do require a connection. We may update the App to fix problems, improve calculations, or add features. We may also discontinue it, in which case a version you have already purchased and installed continues to work on your device for as long as your device and iOS support it.
5. Your data
The App has no accounts. Your aircraft profiles and saved loadings are yours: they live on your device and sync through your own iCloud, and we cannot read them. You can export every saved aircraft profile and saved loading at any time from Settings → Export Aircraft & Loadings, without buying Pro.
Full detail is in the Privacy Policy.
6. Contact
Questions about these terms, or anything else: contact@runwaybrief.app — please put “E6B” in the subject line. Common questions are answered on the support page.
Liana Solutions Pty Ltd, Australia.