Help

Support

Celeris is built by one person. Write to me — about bugs, about questions, about what you would like it to do. I read every mail and answer as fast as I can.

appsupport@stefan-engel.biz Usually answered within a few days · English or German
Write a mail

Reporting a bug

What helps most: the place and the moment being planned for. Almost everything in Celeris follows from those two values, and with them a problem can usually be reproduced directly.

Frequently asked questions

Answers about features, calculations, devices, 3D objects, the free version and purchase are collected in the central FAQ.

Open all questions and answers →

Briefly on privacy: Celeris has no accounts, no trackers and no ads. Everything is calculated on the device. The details are in the privacy policy.