Terms of Use for AirHorizon

Last updated: May 12, 2026

Overview and Acceptance

These Terms of Use ("Terms") govern your use of the AirHorizon iOS and iPadOS application and any related content, features, upgrades, and services made available through the application (collectively, the "App"). The App is provided by Valerii Nikolaev ("we," "us," "our," or the "developer").

By downloading, installing, accessing, or using the App, you agree to be bound by these Terms. If you do not agree, do not use the App.

Eligibility and User Responsibility

You represent that you are legally permitted to use the App in your jurisdiction and that you will use the App only in compliance with applicable laws, regulations, and operating procedures.

You are solely responsible for:

• your use of the App;
• any decisions, actions, or omissions made in reliance on the App;
• compliance with aviation, transportation, safety, and operational rules applicable to you;
• maintaining any certified, legally required, or operationally required instruments, devices, procedures, and backups.

Service Description

AirHorizon is a utility application that may provide, among other things:

• on-device visual horizon, pitch, roll, and heading-related display features;
• speed and altitude display features, including GPS/GNSS-derived and barometric altitude where available;
• device motion, orientation, heading, pressure, and location-assisted reference features;
• optional external telemetry features that may receive user-configured simulator or local-network data;
• calibration and display customization tools;
• optional premium features made available through auto-renewable subscriptions or one-time purchases, where offered.

The App and any feature, content, product offering, or availability may change, be limited, suspended, or discontinued at any time, with or without notice.

Critical Safety Notice

The app is not aviation-certified, safety-certified, fail-safe, or mission-critical software.

The app is not a certified flight instrument, attitude indicator, standby instrument, heading indicator, navigation device, or operational avionics equipment.

The app is provided only as a supplemental, convenience, informational, and reference tool. It is not intended to replace, and must not be used as a substitute for, certified instruments, approved avionics, required safety equipment, official navigation data, or professional judgment.

You must not rely on the app as a primary basis for flight, taxi, takeoff, landing, IFR, VFR, navigation, terrain clearance, separation, attitude recovery, emergency response, or any other safety-critical or time-critical decision.

If you choose to use the App in or around an aircraft, vehicle, vessel, simulator, machinery environment, or any other setting involving risk of injury, death, property damage, or environmental damage, you do so entirely at your own risk.

Sensor, Heading, Location, and Calibration Limitations

The App depends on consumer hardware, operating-system services, and device sensors and system services, which may include the accelerometer, gyroscope, device-motion processing, compass or heading services, location services, barometric or pressure sensors, and user-configured external telemetry sources. These inputs may be unavailable, interrupted, degraded, delayed, drifting, noisy, misaligned, or inaccurate for many reasons, including:

• sensor limitations or hardware faults;
• magnetic interference;
• signal obstruction or degraded location conditions;
• calibration errors or lack of calibration;
• device orientation, mounting position, vibration, movement, or temperature;
• battery conditions, low power mode, or operating-system behavior;
• software bugs, unsupported devices, third-party service issues, or connectivity issues.

Any visual horizon, pitch, roll, heading, north reference, altitude, speed, flight-director cue, or other output generated by the App may therefore be wrong, incomplete, stale, unstable, unavailable, or misleading.

Altitude, speed, barometric pressure, GPS/GNSS, and external telemetry data may be unavailable, delayed, stale, drifting, approximate, or inaccurate. Barometric altitude may vary due to pressure changes, weather, device limitations, calibration, and operating-system behavior.

You are solely responsible for verifying the accuracy, suitability, calibration status, and fitness of any App output before and during any use. The developer does not guarantee that any displayed value or visual representation corresponds to actual aircraft attitude, heading, orientation, position, or safe operating conditions.

No Professional, Aviation, Navigation, or Safety Advice

The App does not provide aviation advice, flight instruction, navigation advice, airworthiness advice, safety assurance, dispatch approval, regulatory compliance advice, legal advice, engineering advice, or any other professional advice.

Any information or output presented by the App is for general informational purposes only. You remain solely responsible for all operational and safety decisions.

Subscriptions, Trials, Billing, Purchases, and Refunds

Certain App features may require a paid entitlement, including an auto-renewable subscription or a one-time in-app purchase, if and when offered.

Where applicable:

• payment is charged by Apple to your Apple ID account;
• subscription renewal, billing cadence, pricing, taxes, trials, and transaction handling are managed by Apple under Apple's terms and policies;
• subscriptions renew automatically unless cancelled in accordance with Apple's rules;
• you can manage or cancel subscriptions in your Apple account settings;
• refund requests must be submitted through Apple, and Apple determines refund eligibility;
• any purchase, entitlement, or subscription status shown inside the App is provided for convenience only and may be delayed, incomplete, or temporarily incorrect.

We do not control Apple's billing systems and are not responsible for billing errors, renewal failures, payment processing issues, App Store outages, regional pricing differences, tax handling, or refund decisions made by Apple.

License and Acceptable Use

Subject to these Terms, we grant you a limited, personal, non-exclusive, non-transferable, non-sublicensable, revocable license to use the App for lawful use on Apple-branded devices that you own or control, as permitted by applicable platform rules.

You agree not to:

• use the App in violation of any law, regulation, or third-party right;
• use the App as a certified or primary operational instrument or for any prohibited safety-critical reliance;
• copy, reverse engineer, decompile, disassemble, modify, or create derivative works from the App, except as permitted by applicable law;
• interfere with the App's integrity, security, performance, or availability;
• attempt unauthorized access to systems, data, transactions, or services related to the App;
• use the App in a manner that could create liability, injury, death, property damage, or regulatory violations for us or others.

Third-Party Services and Platform Dependencies

The App may depend on Apple services and other third-party services, frameworks, devices, or data sources, including StoreKit, location services, motion frameworks, compass services, operating-system features, and external websites opened from the App.

Those third-party services and components are outside our control. They may change, fail, become unavailable, produce inaccurate data, or be subject to separate terms, privacy practices, fees, and restrictions.

References to third-party simulators, products, or services are for setup, compatibility, or informational guidance only and do not imply affiliation, endorsement, certification, support, sponsorship, or approval by those third parties.

To the maximum extent permitted by law, we are not responsible for third-party acts, omissions, interruptions, data quality, outages, security incidents, pricing changes, policy changes, or service failures.

Intellectual Property

The App, including its original source code, original design, text, branding, and other original content and materials, and all related intellectual property rights, is owned by the developer or licensed to the developer and is protected by applicable intellectual property laws.

Apple-provided software, frameworks, fonts, SF Symbols, system icons, system user-interface elements, and other third-party materials are owned by Apple or their respective owners/licensors and are used subject to applicable licenses, terms, and platform rules.

These Terms do not transfer any ownership rights to you. All rights not expressly granted are reserved.

Disclaimer of Warranties

To the maximum extent permitted by law, the app, all outputs, all visualizations, all data, all features, and all related services are provided "as is," "as available," and "with all faults."

To the maximum extent permitted by law, we disclaim all warranties and conditions of any kind, whether express, implied, statutory, or otherwise, including any implied warranties of merchantability, satisfactory quality, fitness for a particular purpose, title, non-infringement, accuracy, reliability, quiet enjoyment, availability, compatibility, security, and non-interruption.

Without limiting the foregoing, we do not warrant that the app will be accurate, current, complete, safe, or fit for flight or any particular use; that the app will function without interruption, latency, error, drift, or failure; that any sensor, heading, location, or attitude output will match real-world conditions; that any defect will be found or corrected; or that the app will be compatible with your device, mounting setup, aircraft, or operating environment.

Assumption of Risk and Release

You knowingly and voluntarily assume all risks arising from or related to your installation, access, or use of the app.

To the maximum extent permitted by law, you release, waive, and discharge the developer from claims, demands, causes of action, damages, losses, costs, and expenses arising out of or related to your use of the app in any aircraft, vehicle, vessel, simulator, or other potentially hazardous context.

This includes claims based on sensor error, display error, heading error, location error, calibration error, delay, interruption, unavailability, user misjudgment, third-party failure, or reliance on app outputs.

Limitation of Liability

To the maximum extent permitted by law, in no event shall the developer be liable for any indirect, incidental, special, exemplary, punitive, or consequential damages whatsoever, or for any loss of profits, loss of revenue, loss of data, loss of goodwill, business interruption, device damage, property damage, personal injury, wrongful death, aviation incident, transportation incident, or other commercial or non-commercial loss, arising out of or related to the app or these terms, even if advised of the possibility of such damages.

To the maximum extent permitted by law, the developer shall not be liable for any claim, damage, or loss arising from or related to use of the app in any flight, ground, navigation, or safety-related context; reliance on the app as a primary or supplemental operational tool; sensor, motion, heading, location, calibration, or display error; device or operating-system failure; third-party data, platform, or service failure; purchase, billing, renewal, restore, or entitlement issues; or your failure to verify, monitor, or maintain independent certified or otherwise suitable instruments and procedures.

To the maximum extent permitted by law, the developer's total aggregate liability for any and all claims arising out of or related to the app or these terms shall not exceed, if you paid for the app's paid features, the total amount you paid for those features during the twelve (12) months immediately preceding the event giving rise to the claim, or if you paid nothing, zero, or the minimum amount required by applicable law.

Some jurisdictions do not allow certain disclaimers, exclusions, or limitations. In such jurisdictions, our liability shall be limited to the greatest extent permitted by applicable law.

Indemnification

To the maximum extent permitted by law, you agree to defend, indemnify, and hold harmless the developer from and against any claims, actions, demands, proceedings, liabilities, damages, judgments, settlements, penalties, fines, losses, costs, and expenses, including reasonable legal fees, arising out of or related to your use or misuse of the App, your breach of these Terms, your violation of law, regulation, or third-party rights, your use of the App in any aircraft, vehicle, vessel, simulator, or other hazardous or regulated environment, or any injury, death, property damage, operational event, or regulatory matter connected to your use of the App.

Suspension and Termination

We may suspend, restrict, or terminate the App or your access to some or all App features at any time, with or without notice, including where reasonably necessary for maintenance, updates, abuse prevention, legal compliance, security, technical issues, or product changes.

Termination or suspension does not limit any right or remedy otherwise available to us. Sections that by their nature should survive termination will survive termination, including safety notices, disclaimers, limitation of liability, indemnification, intellectual property, governing law, and dispute provisions.

Changes to Terms

We may revise these Terms from time to time. Updated Terms may be posted within the App, on a website, or otherwise made available to users. Your continued use of the App after updated Terms are made available constitutes your acceptance of the updated Terms.

Governing Law and Disputes

These Terms and any dispute, claim, or controversy arising out of or relating to the App or these Terms are subject to applicable law, including any mandatory consumer protection laws that apply in your jurisdiction.

Nothing in these Terms limits any non-waivable rights or remedies you may have under applicable law or prevents any claim from being brought in a forum required by applicable law.

Severability and Waiver

If any provision of these Terms is held unlawful, invalid, or unenforceable, that provision shall be enforced to the maximum extent permitted and the remaining provisions shall remain in full force and effect.

Our failure to enforce any provision of these Terms shall not constitute a waiver of that provision or any other provision.

Contact

Developer: Valerii Nikolaev
Contact email: valnikodeveloper@gmail.com