Effective Date: October 5, 2026
Last Updated: October 5, 2026
Please read these Terms of Use (“Terms”) carefully before using the Chamfer app for iPhone and iPad (“App”) developed by Volodymyr Pysarenko (“Developer”, “we”, “us”, or “our”). By downloading, installing, or using the App, you agree to be bound by these Terms.
By using Chamfer, you confirm that you are at least 13 years of age, have read and understood these Terms, and agree to be legally bound by them. If you do not agree, do not use the App.
The App is licensed to you under Apple’s Licensed Application End User License Agreement (“Apple EULA”). These Terms add to the Apple EULA. If they conflict, the Apple EULA prevails.
Chamfer is a viewer for CAD drawings that lets you:
The App shows drawings. It does not edit them.
Chamfer does not require you to register or create an account. The App works on your device, and we do not operate servers that store your drawings. See the Privacy Policy for details.
Keeping drawings in the library is free. Opening them requires an active subscription. The subscription is auto-renewable and is offered through Apple’s App Store as a weekly or a yearly plan. The plans, their prices and any free trial are shown in the App before you subscribe.
If a plan comes with a free trial, the trial is available once, to new subscribers. When the trial ends, the plan’s price is charged unless you cancel at least 24 hours before that.
Purchases are handled by Apple, and refunds are given by Apple under its own policies. We cannot refund a purchase ourselves. No refunds are provided for a partly used period, except as required by applicable law or Apple’s refund policies.
We may change the subscription’s price. Apple will tell you about a higher price in advance and, where required, ask for your consent before it applies to you.
The drawings you open in the App are yours or belong to those who gave them to you. They are stored on your device. We have no access to them and claim no rights to them.
You are responsible for having the right to open, keep, export and print the files you use with the App.
The App keeps the files you import on your device only. Keep the originals of any drawings that matter to you. The Developer is not responsible for loss of files caused by deleting the App, by device failure, or by other causes.
CAD formats are complex, and some of them are not publicly documented. The App may show a drawing differently from the program it was made in, or leave out parts of it: for example, fonts that are not on the device are replaced with others, and some kinds of objects are not supported. A PDF or a print made by the App shows the drawing as the App displays it.
Drawings shown, exported or printed by the App are provided for reference only. Do not rely on the App alone for construction, manufacturing, engineering, safety or legal decisions. Check anything that matters, including dimensions and scale, against the original drawing in the program it was made in.
You agree not to:
The App, including its design, code, graphics, and text, is owned by the Developer and is protected by copyright and other intellectual property laws. Your right to use it is the license granted by the Apple EULA.
The App includes open-source software and fonts, which are provided under their own licenses. They are listed in Settings > Chamfer > Acknowledgements.
Chamfer is an independent app. It is not affiliated with, endorsed by or sponsored by Autodesk, Inc. Autodesk, AutoCAD, DWG, DWF and DXF are trademarks of Autodesk, Inc. Other names belong to their owners and are used only to name the file formats that the App opens.
The App uses Apple’s App Store and RevenueCat to sell and manage the subscription. Your use of these services is subject to their terms and privacy policies. We are not responsible for the practices of any third-party services.
Your use of the App is also governed by our Privacy Policy, which is incorporated into these Terms by reference.
THE APP IS PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT, TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW.
WE DO NOT WARRANT THAT:
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE DEVELOPER SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING BUT NOT LIMITED TO LOSS OF DATA, REVENUE, OR BUSINESS, OR DAMAGES RESULTING FROM RELIANCE ON A DRAWING AS SHOWN, EXPORTED OR PRINTED BY THE APP, ARISING OUT OF OR RELATED TO YOUR USE OF THE APP, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
OUR TOTAL LIABILITY TO YOU FOR ANY CLAIMS ARISING FROM THESE TERMS OR YOUR USE OF THE APP SHALL NOT EXCEED THE AMOUNT YOU PAID FOR YOUR CHAMFER SUBSCRIPTION IN THE TWELVE (12) MONTHS PRECEDING THE CLAIM.
Nothing in these Terms limits any rights you have as a consumer that cannot be limited by contract under the laws of your country.
These Terms are between you and the Developer, not Apple. Apple is not responsible for the App or its content, and has no obligation to provide maintenance or support for it. Apple is not responsible for addressing any claims relating to the App, including product liability claims, claims that the App fails to meet legal or regulatory requirements, consumer protection claims, or claims that the App infringes a third party’s intellectual property. If the App fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price of the App, if any; to the maximum extent permitted by law, Apple has no other warranty obligation for the App. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.
You may stop using the App at any time. To remove its data from your device, delete the App; to stop paying, cancel the subscription in your Apple Account settings. Your license ends automatically if you fail to comply with these Terms or the Apple EULA. Sections 5.3, 6, 8, 11, 12 and 13 survive termination.
These Terms are governed by the laws of the jurisdiction in which the Developer is located, without regard to conflict of law principles, except where the laws of your country of residence require otherwise.
We may modify these Terms at any time. We will update the “Last Updated” date when we do. Your continued use of the App after revised Terms take effect means you accept the changes.
If you have questions about these Terms, please contact us at:
Email: pysarenko.dev@gmail.com
Developer: Volodymyr Pysarenko