Terms of Use

1Agreement to these terms

These Terms of Use (“Terms”) are a legal agreement between you and Zydeno, the developer of Ditlamp (“we”, “us”). They apply to the Ditlamp app for Android, its updates and everything it shows or produces (together, “the app”). By installing, opening or using the app you accept these Terms. If you do not accept them, do not use the app and uninstall it.

The Privacy Policy explains how the app handles data and forms part of these Terms. If we offer optional features under additional terms in the future, for example paid features, those terms will be shown to you before you accept them and will apply together with these Terms.

You must be old enough to enter into a binding contract where you live, or use the app with the consent and supervision of a parent or guardian who accepts these Terms for you. If you use the app for an organisation, you confirm that you may accept these Terms on its behalf; the consumer-protection provisions of these Terms apply only to consumers.

2What Ditlamp provides

Ditlamp is an offline Morse code translator, decoder and trainer. It converts text to Morse code and back, plays code as sound, an on-screen lamp, the phone’s flashlight, vibration and screen flash, reads code from sound through the microphone, from light through the camera and from a recording you choose, teaches Morse code in daily sessions using the Koch method, lets you practise sending on an on-screen key, and provides a reference chart, practice packs and a log of your messages. You can export and import your own data.

The alphabets, packs and features available depend on the version you install and on your phone. Descriptions of possible future features do not make them available in the current version. Ditlamp does not connect to radios, transmitters or other devices, does not send radio signals and does not use telephony.

3Not professional advice; no safety-critical use

Ditlamp is a tool for learning, practising and translating Morse code. It does not give professional, radio-licensing, navigation, safety, legal or other expert advice, and using it does not create a professional relationship with us. You remain responsible for your inputs, for how you interpret the results and for what you decide to do.

Do not use the app as the only basis for a decision where an error could cause death, personal injury, damage to property or the environment, or legal or financial loss, and do not use it in a safety-critical system, in an emergency or to control equipment. Ditlamp is a learning and practice tool. It is not a safety or emergency device, a distress-signalling, rescue or survival aid, a navigation or maritime or aviation signalling aid, or a radio transmitter, and it must not be relied on to call for help or to send or receive messages that matter for safety. SOS is only a Morse signal in the app, like any other prosign: the app has no SOS button, beacon or emergency mode, and nothing in it contacts emergency services or other people.

4Licence to use the app

Subject to these Terms, we grant you a limited, personal, revocable, non-exclusive, non-transferable and non-sublicensable licence to download, install and use the app on Android devices you own or control, for your own purposes. The app is licensed to you, not sold.

Except where these Terms, an open-source licence or mandatory law allow it (for example decompiling for interoperability where the law permits), you may not: copy, modify, translate or create derivative works of the app; decompile, disassemble or reverse-engineer it; rent, lend, sell, sublicense, distribute or publish it, or make it available for use by others over a network; remove or change any copyright, trademark or legal notice; or get around any technical limit of the app, including any future purchase, licence or advertising mechanism.

Open-source components and fonts in the app are licensed under their own licences, listed in the app under Settings, About, Licences. Those licences prevail for those components, and nothing in these Terms limits the rights they give you.

5Not a safety or emergency device

SOS is only a Morse signal in the app. It is shown as an ordinary prosign and may be played as practice text like any other message; before a flashing output plays it, the app warns you that SOS is a real distress signal. Distress signals are protected by law in many countries, and sending a false one can be an offence. Practise where no one can mistake a signal for a call for help. In an emergency, call your local emergency number.

6Decoding, translation and scores are estimates

Translations follow published Morse code tables, and tables for some alphabets differ between countries and over time. Practice words, call signs and exchange texts are generated or written for practice; call signs shown are not real stations. Lesson scores, streaks and the speed ladder describe your results in this app only. They do not certify your ability or qualify you for any licence, exam or job, and no learning outcome is promised.

We are not responsible for a message that is read or sent wrongly, or for any decision you take on the basis of the app’s output (see Limitation of liability).

7Flashing light, flashlight, sound and vibration

• Volume and hearing. A steady tone can be tiring or loud, especially in headphones. Start with a low volume, take breaks and do not use it at a level that could harm your hearing.
• Flashlight and heat. Running the flashlight for long periods warms the phone and uses battery. Do not shine it into anyone’s eyes, and do not use it where light is prohibited or could distract others, for example while driving, cycling or near aircraft, ships or traffic.
• Vibration. Switch the vibration output off if it is uncomfortable. Haptic feedback can be turned off in Settings.
• Attention. Do not use the app while driving, operating equipment or doing anything that needs your attention for safety.

8Lawful use, listening and radio

Ditlamp makes sound, light and vibration and reads sound and light that you point it at. It does not transmit radio, control a radio, listen to radio traffic by itself or access calls. Amateur radio, maritime, aviation and signalling rules, and rules on recording or listening to other people’s communications, differ by country. You are responsible for knowing and following the laws and licences that apply to you. Do not use the app to intercept or monitor communications that you are not entitled to receive, and do not point the camera or microphone at people or places where doing so is not allowed.

Practice material, such as example call signs and exchanges, is for learning only. Ditlamp does not teach, prepare for or certify any licence examination, and it is not approved by any licensing body.

9Local data, deletion and backups

Your data stays on your phone unless you choose to export or share it. There is no developer account, no server copy and no automatic cloud backup. In Settings, Your data, Delete all removes your data after you confirm. Import replaces the data on the phone with the contents of the backup file (the app keeps a safety copy that you can restore with Undo import); export first if you want a copy. Exported and shared files are ordinary, unencrypted files and are your responsibility; copies saved outside the app are not removed by Delete all. See the Privacy Policy for details.

10Fonts and open-source components

The app bundles the Gothic A1 typeface (© HanYang I&C Co., Ltd.) and the Anonymous Pro typeface (© 2009 Mark Simonson, Reserved Font Name “Anonymous Pro”), both under the SIL Open Font License 1.1, and AndroidX libraries (including Jetpack Compose, CameraX and DataStore) and Kotlin libraries under the Apache License 2.0. The app’s icons are our own drawings in the style of Google’s Material Symbols, and the Apache License 2.0 notice for Material Symbols is included in the app as a courtesy. The licence texts and notices are available in the app under Settings, About, Licences, and work offline. The sounds, icons, drawings, practice lists and help text in the app were created by Zydeno. Morse code tables are facts re-entered by us from published standards and cited in the app under Settings, About, Sources of the code tables.

Open-source licences prevail for the components they cover. These Terms do not grant permission to resell a font file or library contrary to its own licence. Android, Google Play and other third-party names identify their respective products and services; their use does not imply endorsement or affiliation.

11Acceptable use

Use the app lawfully and considerately. Do not present Ditlamp’s output as official, certified or approved by any authority, and do not use the flashlight, sound or vibration to disturb, distract or endanger others.

12Your content and our materials

You keep the rights you hold in your own messages and data. Saving or exporting your Log in Ditlamp does not transfer ownership of it to Zydeno.

The app, its brand, interface artwork, sounds, practice lists and help text are protected by intellectual-property law. These Terms do not grant a right to extract and redistribute the app’s code, artwork, sounds or lists as a separate product.

13Price, payments, ads and future paid features

Current version. The current version of Ditlamp is provided free of charge, without ads and without in-app purchases or subscriptions. This describes the current version only. It is not a promise that the app, or any feature of it, will remain free of charge or free of ads.

Possible changes. We may at any time introduce advertising; offer paid features, in-app purchases, subscriptions or a paid edition; change which features are free; and set or change prices. Features that are free today may require payment in a future version. We will describe such changes in the store listing and release notes, and in the Privacy Policy where they affect data.

Purchases. Any purchase will be made through Google Play and processed by Google under the Google Play Terms of Service and its payment policies. Prices are shown in Google Play before you buy, including taxes where applicable. Subscriptions renew automatically until you cancel them in Google Play; cancelling stops future renewals. Refunds follow Google Play’s refund policies and your mandatory consumer rights, such as the right of withdrawal in the EU and the UK. Where you ask for immediate access to digital content during a withdrawal period, you may lose that right to the extent the law allows, and you will be asked to confirm this before you buy. You are charged only if you choose to buy something.

Ads. If the app shows ads, they are supplied by third parties. We are not responsible for the content of ads or for the products and services advertised, and any dealings with advertisers are between you and them.

Price changes. We may change prices for future purchases at any time. For an active subscription, we will announce a price increase as Google Play and the law require, and you can cancel before it applies.

14Disclaimer of warranties

Translations, decoded text, speeds, scores, practice material and exported files can be wrong. We do not promise that the microphone or camera will read any given signal correctly or at all, that the flashlight, vibration or screen flash will work on your phone, that audio, light and vibration stay perfectly in step, that a character table is correct for your language or purpose, that an exported file opens identically in every app, or that lost or deleted data can be recovered.

15Limitation of liability

To the extent the law permits, we are not responsible for any loss or harm arising from wrong, missing or misread characters or speeds; a signal that was not seen, heard or understood; use of the flashlight, screen flash, sound or vibration, including discomfort, hearing or eye strain, battery drain or heat; reliance on the app in a situation involving safety or an emergency; data deleted by Delete all or an import; or disclosure through a destination you select. The limitations and mandatory exceptions below govern this clause.

16Your rights as a consumer

If you use the app as a consumer, you benefit from the mandatory consumer-protection rules of the country where you live, and nothing in these Terms affects them. In particular:

• EU and EEA: your statutory rights, including those on the conformity of digital content and digital services under the national rules implementing Directive (EU) 2019/770 where they apply, and mandatory product-liability rules, remain unaffected.
• United Kingdom: your statutory rights, including under the Consumer Rights Act 2015, remain unaffected.
• Australia: our services come with guarantees that cannot be excluded under the Australian Consumer Law. Where the law allows us to limit our liability for failing to meet a consumer guarantee for services that are not of a kind ordinarily acquired for personal, domestic or household use, our liability is limited to supplying the services again or paying the cost of having them supplied again.
• New Zealand: if you acquire the app for business purposes, you agree that the Consumer Guarantees Act 1993 does not apply, to the extent the law permits.
• United States and Canada: some states and provinces do not allow the exclusion of implied warranties or the limitation of incidental or consequential damages, so some of the exclusions above may not apply to you. In Québec, the mandatory provisions of the Consumer Protection Act apply.

17Indemnity

To the extent permitted by law, you agree to indemnify and hold harmless the developer against claims, liabilities, damages, losses and reasonable costs, including reasonable legal fees, brought by third parties and arising out of (a) the messages you send or decode, the light, sound and vibration signals you make with the app, and any files you import, export or share, (b) your breach of these Terms, (c) your violation of any law or of the rights of others, or (d) output of the app that you provide to another person, such as a client or employer. This does not apply to the extent a claim is caused by our own breach of these Terms or our negligence, or where local consumer law does not allow it.

18Changes, availability and termination

To the extent the law allows, we may change, update, add or remove features, change data sources, and suspend or discontinue the app, in whole or in part or in any country, at any time. We are not obliged to provide updates, maintenance or support, except where mandatory consumer law requires updates to keep the app in conformity.

You may stop using the app at any time by uninstalling it. Your licence ends automatically if you materially breach these Terms, and we may end or suspend it where the law requires. When it ends, you must stop using the app and uninstall it. Your data stays on your device under your control, so export what you need first.

Provisions that by their nature should continue after these Terms end continue to apply, including those on intellectual property, disclaimers, limitation of liability, indemnity, governing law and general provisions.

19Google Play

You obtain the app through Google Play. Your download, and any purchase you make, is also governed by the Google Play Terms of Service and Google’s policies. Where these Terms conflict with Google Play’s terms on the distribution, billing, refunds or licensing of apps obtained from Google Play, Google Play’s terms prevail to the extent of that conflict.

These Terms are between you and the developer only, not Google. Google is not responsible for the app or its content and has no obligation to provide maintenance or support for it. Android and Google Play are trademarks of Google LLC.

20Governing law and disputes

These Terms, and any dispute or claim arising out of or in connection with them or the app, including non-contractual disputes, are governed by the law of the country in which the developer is established, without regard to its conflict-of-laws rules. The United Nations Convention on Contracts for the International Sale of Goods does not apply.

The courts competent for the place where the developer is established have jurisdiction. If you are a consumer, you keep the protection of the mandatory provisions of the law of your country of residence, and you may bring proceedings in the courts of that country where that law allows it.

Before starting formal proceedings, please write to [email protected] and give us at least 30 days to try to resolve the issue informally. This does not affect any time limit that applies to you by law or your right to use an alternative dispute-resolution body available to consumers in your country.

21General provisions

• Entire agreement. These Terms, the Privacy Policy and any additional terms you accept for optional features are the entire agreement between you and us about the app.
• Severability. If a provision is found invalid or unenforceable, it applies to the maximum extent permitted and the rest remains in effect.
• No waiver. Not enforcing a provision is not a waiver of the right to enforce it later.
• Assignment. You may not transfer your rights or obligations under these Terms. We may transfer ours, for example together with the app to another developer; where the law requires, this will not reduce your rights as a consumer.
• Events beyond our control. We are not responsible for failure or delay caused by events beyond our reasonable control, such as outages of networks, devices or third-party services, natural disasters or acts of authorities.
• Export and sanctions. You agree to use the app in compliance with applicable export-control and sanctions laws.
• No third-party rights. No one other than you and us may enforce these Terms.
• Notices. We may give notices in the app, in its store listing or release notes, or on this page. You can send notices to [email protected].
• Language. These Terms are written in English, which is the binding version. A translation, if offered, is for convenience only, unless the law of your country requires otherwise.

22Changes to these terms

We may update these Terms, for example when we change the app, introduce ads or paid features (§13), or when the law changes. The effective date and version at the top of this page show which version applies, and the version history (§23) summarises the changes.

For material changes we give reasonable notice before they take effect, for example in the release notes or in the app. If you keep using the app after the changes take effect, you accept the updated Terms; if you do not agree, stop using the app and uninstall it. Changes do not apply to disputes that arose before they took effect.

23Version history

24Contact

• Developer: Zydeno, the developer of Ditlamp on Google Play
• E-mail: [email protected]
• Website: zydeno.com

See also the Privacy Policy.