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Help and Documentation

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• E-Invoice Space
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• Briefing

Support

The preferred way to contact support is via the support function built into the apps, which can usually be found in the main menu under Help. This gives me additional information about the version of the application I am using. Alternatively there are the following support forms on the websites:

• Receipts Space
• E-Invoice Space
• PDFify

Newsletter

Stay up to date with the email newsletter:

• Newsletter

Or subscribe right here:

Blog

In depth articles about app development backgrounds: Entwicklung:

• Holtwick.de
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Social Media

Mastodon

• mastodon.social@holtwick

Bluesky

• holtwick

Youtube

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• Holtwick - alle Anderen

Reviews

Did you like the app or the product? That is great! Here are ways to share the joy.

AppStores

• Receipts
• PDFify

ProductHunt

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• PDFify
• Briefing

AlternativeTo

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• PDFify
• Briefing

MacUpdate

• Receipts
• PDFify

SetApp

• Receipts

API

Some apps offer programming interfaces:

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• Briefing

Sponsoring

I develop and sell apps, but I am also involved in the open source area. I would like to provide more Open Source, but then the income is missing. For this reason it is also possible to support my work.

• Sponsoring via Github
• Direkt via PayPal

Of course, other ways are also possible or contract work against invoice. Please contact me via contact@holtwick.de.