We have previously released web VR version of the software that is licensed under MIT, open source license. You can download the code and assets for the web VR version free of charge. Later on we have developed 2D version that is currently available on demand under EULA license – please contact us for more information.

This End-User License Agreement (“EULA”) is a legal agreement between you and Vojtech Leischner. 

This EULA agreement governs your acquisition and use of our Trick the Ear software (“Software”) directly from Vojtech Leischner or indirectly through a Vojtech Leischner authorized reseller or distributor (a “Reseller”).

Please read this EULA agreement carefully before completing the installation process and using the Trick the Ear software. It provides a license to use the Trick the Ear software and contains warranty information and liability disclaimers.

If you register for a free trial of the Trick the Ear software, this EULA agreement will also govern that trial. By clicking “accept” or installing and/or using the Trick the Ear software, you are confirming your acceptance of the Software and agreeing to become bound by the terms of this EULA agreement.

If you are entering into this EULA agreement on behalf of a company or other legal entity, you represent that you have the authority to bind such entity and its affiliates to these terms and conditions. If you do not have such authority or if you do not agree with the terms and conditions of this EULA agreement, do not install or use the Software, and you must not accept this EULA agreement.

This EULA agreement shall apply only to the Software supplied by Vojtech Leischner herewith regardless of whether other software is referred to or described herein. The terms also apply to any Vojtech Leischner updates, supplements, Internet-based services, and support services for the Software, unless other terms accompany those items on delivery. If so, those terms apply.

License Grant

Vojtech Leischner hereby grants you a personal, non-transferable, non-exclusive licence to use the Trick the Ear software on a single domain name online in accordance with the terms of this EULA agreement.

You are permitted to load the Trick the Ear software (for example a server) under your control. You are responsible for ensuring your device meets the minimum requirements of the Trick the Ear software.

You are not permitted to:

  • Edit, alter, modify, adapt, translate or otherwise change the whole or any part of the Software nor permit the whole or any part of the Software to be combined with or become incorporated in any other software, nor decompile, disassemble or reverse engineer the Software or attempt to do any such things
  • Reproduce, copy, distribute, resell or otherwise use the Software for any commercial purpose
  • Allow any third party to use the Software on behalf of or for the benefit of any third party
  • Use the Software in any way which breaches any applicable local, national or international law
  • use the Software for any purpose that Vojtech Leischner considers is a breach of this EULA agreement

Intellectual Property and Ownership

Vojtech Leischner shall at all times retain ownership of the Software as originally downloaded by you and all subsequent downloads of the Software by you. The Software (and the copyright, and other intellectual property rights of whatever nature in the Software, including any modifications made thereto) are and shall remain the property of Vojtech Leischner.

Vojtech Leischner reserves the right to grant licences to use the Software to third parties.


This EULA agreement is effective from the date you first use the Software and shall continue until terminated. You may terminate it at any time upon written notice to Vojtech Leischner.

It will also terminate immediately if you fail to comply with any term of this EULA agreement. Upon such termination, the licenses granted by this EULA agreement will immediately terminate and you agree to stop all access and use of the Software. The provisions that by their nature continue and survive will survive any termination of this EULA agreement.

Governing Law

This EULA agreement, and any dispute arising out of or in connection with this EULA agreement, shall be governed by and construed in accordance with the laws of cz.