These Terms and Conditions ("Terms") govern your use of the UnitConverter app, published as Unit Dial, for Android and iOS (App ID: com.dimadyuk.unitconverter), together with any related services operated by Dzmitry Dzemidziuk (collectively, the "Application"). Dzmitry Dzemidziuk is hereby referred to as the "Service Provider". By downloading or using the Application, you agree to be bound by these Terms. These Terms cover both platforms; where a rule applies to only one of them, the platform is stated explicitly.

By downloading, installing, or using the Application, you confirm that you have the legal capacity to enter into a binding agreement in your jurisdiction and that you accept these Terms in full. If you are a minor under the law of your country of residence, you may use the Application only with the involvement and agreement of a parent or legal guardian, who accepts these Terms on your behalf. If you do not agree with any part of these Terms, do not use the Application.

The Service Provider grants you a limited, non-exclusive, non-transferable, revocable license to download and use the Application on Android and iOS devices that you own or control, strictly in accordance with these Terms. You may use the Application for personal purposes and in the course of your own work or business.

On iOS, this license is further subject to the Usage Rules set out in the Apple Media Services Terms and Conditions, and is limited to Apple-branded products that you own or control.

You may not: copy, redistribute, sublicense, rent, lease, or sell the Application; modify or create derivative works of it; reverse engineer, decompile, or disassemble it; use it for any unlawful purpose or in a manner that infringes on third-party rights; or remove or alter any proprietary notices or labels on it.

The Application is free to download and is funded by advertising. In the free version the Application displays advertisements supplied by Google AdMob — a banner on its main screens and one full-screen advertisement when you open the Settings screen. Advertising is part of the service provided to you free of charge; you agree not to interfere with, block, or attempt to circumvent the display of advertisements, and you agree not to click advertisements other than out of genuine interest. Where required in your region, the Application asks for your advertising consent before advertisements are requested, and you can change that choice later as described in the Privacy Policy. The Service Provider does not select or endorse individual advertisements and is not responsible for the content of advertisements or for the products, services, or websites they lead to.

An active premium subscription or the lifetime purchase removes all advertising from the Application. Optional premium features are available through the following purchases:

• Monthly subscription — auto-renewing, billed every month.
• Annual subscription — auto-renewing, billed every year.
• Lifetime access — a one-time, non-consumable purchase. It does not renew, is not billed again, and therefore cannot be cancelled. "Lifetime" means the lifetime of the Application, not the lifetime of the purchaser: the purchase gives you access to the premium features for as long as the Service Provider offers and supports the Application on the store where you bought it. It remains available on the store account used to buy it and can be restored on your devices.

The following terms apply:

• Payment: Purchases are made through Google Play (Android) or the Apple App Store (iOS), which act as the seller of record. Payment is charged to your Google Play account or to your Apple ID account at confirmation of purchase.
• Auto-renewal: Subscriptions renew automatically at the end of each period at the same price and duration unless cancelled beforehand.
  • iOS: your Apple ID account is charged within 24 hours prior to the end of the current period. To avoid being charged, cancel at least 24 hours before the end of the current period.
  • Android: your Google Play account is charged on the renewal date. You may cancel at any time before the renewal date; cancellation takes effect at the end of the period already paid for.
• Free trial: Where a free trial is offered, it begins at the time of purchase. If you do not cancel before the end of the trial period — on iOS, at least 24 hours before it ends — the subscription automatically converts to a paid subscription and you will be charged. Any unused portion of a free trial is forfeited when you purchase a subscription.
• Managing your subscription: You can manage and cancel your subscription at any time through your store account settings — Google Play → Account → Payments & subscriptions → Subscriptions on Android, or Settings → [your name] → Subscriptions on iOS. The Service Provider cannot process cancellations directly.
• Restoring purchases: Purchases are tied to the store account used to make them and can be restored on your devices via the "Restore purchases" action in the Application.
• Price changes: Prices are subject to change. You will be notified of any price change in advance in accordance with the applicable store's rules, and — where those rules or applicable law so require — a price increase will not take effect for an existing subscription without your consent. Continued use of a subscription after a price change has taken effect constitutes acceptance of the new price.
• Current prices, subscription periods and the exact set of premium features are displayed within the Application and on the Google Play and App Store listings.

Refund requests are handled by the store through which the purchase was made, as that store is the seller of record. The Service Provider does not process refunds directly.

• Android: see the Google Play refund policy, or contact Google Play support.
• iOS: see Apple's Request a refund for apps or content, or use reportaproblem.apple.com.

This section does not affect any statutory rights you have as a consumer, including any right of withdrawal or any remedy for digital content that is not as described, under the law of your country of residence. If you believe such a right applies and the store has not resolved your request, contact the Service Provider at dimadyuk.dev@gmail.com.

The Application stores your settings, favourite categories and units, and — where the feature is available — your conversion history. This data belongs to you:

• It is stored locally on your device using on-device preference storage and an on-device database. The Service Provider does not transmit, access, or store it on any server.
• The Service Provider makes no claim of ownership over it.
• You are responsible for backing it up. The Service Provider is not liable for any loss of this data due to device failure, app uninstallation, or other causes.

Separately from the data above, the Application collects usage analytics and crash diagnostics through Google Analytics for Firebase and Firebase Crashlytics, and — in the free, ad-supported version — Google AdMob processes data in order to deliver advertising. Analytics and crash reporting are active in released builds and cannot be switched off inside the Application; advertising consent, where it applies to you, can be granted or withdrawn at any time from the Settings screen. See the Privacy Policy for full details of what is and is not processed.

The Application, including its design, source code, graphics, user interface, icons, and the compiled set of unit definitions and conversion factors, is the intellectual property of the Service Provider and is protected by applicable copyright, trademark, and other intellectual property laws. Nothing in these Terms grants you any right to use the Service Provider's intellectual property other than as expressly set forth herein.

You agree not to:

• Reverse engineer, decompile, disassemble, or otherwise attempt to derive the source code of the Application.
• Use the Application in any manner that could disable, overburden, damage, or impair it.
• Attempt to gain unauthorized access to any portion of the Application or its related systems.
• Circumvent, disable, or otherwise interfere with the purchase or entitlement verification mechanisms of the Application.
• Use the Application for any illegal purpose or in violation of any applicable local, national, or international law.

The Application uses the following third-party services, which are subject to their own terms and privacy policies. You are responsible for complying with any applicable third-party terms when you use the Application:

• Google Play Services / Google Play Billing (Android)
• Google Analytics for Firebase (usage analytics)
• Firebase Crashlytics (crash reporting)
• Apple App Store / StoreKit (iOS)
• RevenueCat (subscription management)
• Google AdMob (advertising) and the Google User Messaging Platform (advertising consent)
• Frankfurter (published foreign-exchange reference rates)

The Service Provider is not responsible for the practices of these third-party services. For information on how the Application handles personal data, please refer to the Privacy Policy.

The Application performs unit conversions using published conversion factors and standard floating-point arithmetic. Results are rounded and may differ from values obtained by other methods or tools.

Currency conversion is based on published reference rates — a snapshot bundled with the Application and, where a network connection is available, reference rates retrieved at most once a day from the public Frankfurter API, which republishes the reference rates of the European Central Bank. These rates are indicative only: they are not live market rates, they may be several hours or days old, they are not updated at weekends or on banking holidays, and they do not include the spreads, commissions, or fees applied by banks, card issuers, payment services, or bureaux de change. They must not be used as a basis for any trading, hedging, accounting, tax, invoicing, or other financial decision. The Service Provider does not produce these rates, does not guarantee their availability, timeliness, or accuracy, and is not responsible for the third-party service that supplies them.

CONVERSION RESULTS AND EXCHANGE RATES ARE PROVIDED FOR GENERAL INFORMATIONAL AND CONVENIENCE PURPOSES ONLY AND ARE OFFERED "AS IS", WITHOUT ANY WARRANTY OF ACCURACY, PRECISION, OR COMPLETENESS. The Application is not intended for, and must not be relied upon in, any medical, pharmaceutical, dosing, engineering, construction, scientific, financial, commercial, legal, aviation, maritime, navigational, or other use where an incorrect result could cause injury, loss, or damage. You are solely responsible for independently verifying any result before acting on it. Subject to section 11, the Service Provider accepts no liability for decisions made or actions taken on the basis of a conversion produced by the Application.

TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE APPLICATION IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, AND NON-INFRINGEMENT. The Service Provider does not warrant that the Application will be uninterrupted, error-free, or free of viruses or other harmful components.

If you are a consumer, this section does not affect the statutory conformity requirements and remedies for digital content and digital services under the law of your country of residence, which apply in addition to these Terms.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE SERVICE PROVIDER SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING OUT OF OR RELATED TO YOUR USE OF THE APPLICATION, INCLUDING BUT NOT LIMITED TO LOSS OF DATA, LOSS OF PROFITS, LOSS OF GOODWILL, OR ANY DAMAGE RESULTING FROM RELIANCE ON A CONVERSION RESULT, EVEN IF THE SERVICE PROVIDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN JURISDICTIONS THAT DO NOT ALLOW THE EXCLUSION OR LIMITATION OF CERTAIN DAMAGES, THE SERVICE PROVIDER'S LIABILITY SHALL BE LIMITED TO THE MAXIMUM EXTENT PERMITTED BY LAW.

Nothing in these Terms limits or excludes liability that cannot be limited or excluded under applicable law, including liability for death or personal injury caused by negligence, for gross negligence or wilful misconduct, for fraud, or under mandatory consumer protection law.

These Terms remain in effect until terminated. You may terminate them at any time by ceasing to use the Application and uninstalling it.

The Service Provider may suspend or terminate your access to the Application if you materially breach these Terms, giving you notice and, where the breach is capable of being cured, a reasonable opportunity to cure it, unless immediate action is required by law or to prevent harm. The Service Provider may also discontinue the Application as a whole; where that happens, reasonable advance notice will be given through the store listing or the Application.

Termination does not affect purchases already paid for: if the Application is discontinued or your access is terminated other than for your material breach, any refund or compensation you may be entitled to under applicable law or under the applicable store's policies remains available to you. Sections 5 (Your Data), 6 (Intellectual Property), 9 (Accuracy of Conversions), 10 (Disclaimer), 11 (Limitation of Liability), and 14 (Governing Law) survive termination.

The Service Provider reserves the right to modify these Terms at any time. Material changes will be communicated by updating the effective date below and, where required by law, by notifying you in advance. Your continued use of the Application after the effective date of revised Terms constitutes your acceptance of those changes. If you do not agree to the revised Terms, you must stop using the Application.

These Terms shall be governed by and construed in accordance with the laws of the Republic of Poland, without regard to its conflict of law provisions.

If you are a consumer resident in the European Union, this choice of law does not deprive you of the protection afforded to you by the mandatory provisions of the law of your country of residence, and you may bring proceedings against the Service Provider either before the courts of Poland or before the courts of your own place of residence; the Service Provider may bring proceedings against you only before the courts of your place of residence. EU consumers may also use the European Commission's online dispute resolution platform.

For all other users, the courts of Poland shall have exclusive jurisdiction over any dispute arising from these Terms or your use of the Application.

If you obtained the Application from the Apple App Store, the following additional terms apply:

• These Terms are concluded between you and the Service Provider only, and not with Apple. Apple is not responsible for the Application or its content.
• Scope of license: the license granted in section 2 is non-transferable and limited to use of the Application on Apple-branded products that you own or control, as permitted by the Usage Rules set out in the Apple Media Services Terms and Conditions, except that the Application may be accessed by other accounts associated with you via Family Sharing or volume purchasing.
• Apple has no obligation whatsoever to furnish any maintenance or support services with respect to the Application.
• In the event of any failure of the Application to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price of the Application to you; to the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the Application.
• The Service Provider, not Apple, is responsible for addressing any claims relating to the Application, including product liability claims, claims that the Application fails to conform to any applicable legal or regulatory requirement, and claims arising under consumer protection or similar legislation.
• The Service Provider, not Apple, is responsible for the investigation, defense, settlement and discharge of any third-party intellectual property infringement claim relating to the Application.
• Third-party terms: you must comply with any applicable third-party terms of agreement when using the Application.
• Apple and its subsidiaries are third-party beneficiaries of these Terms and, upon your acceptance, will have the right to enforce them against you.
• You represent that you are not located in a country subject to a U.S. Government embargo or designated as a "terrorist supporting" country, and that you are not listed on any U.S. Government list of prohibited or restricted parties.
• Questions, complaints, and support requests regarding the Application should be directed to the Service Provider at dimadyuk.dev@gmail.com.

If any provision of these Terms is found to be unenforceable or invalid by a court of competent jurisdiction, that provision shall be modified to the minimum extent necessary to make it enforceable, and the remaining provisions shall continue in full force and effect.

If you have any questions about these Terms, please contact the Service Provider at dimadyuk.dev@gmail.com.

These Terms and Conditions are effective as of 2026-09-07.

Unit Dial (UnitConverter) — App ID: com.dimadyuk.unitconverter — Android & iOS
Privacy Policy · Support