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02 — Writing

Notes from the workbench.

  1. 01 Why Invoice Maker is pay-once Subscriptions are the default business model of modern software. For Invoice Maker, we chose the harder one on purpose — and it fits this app specifically. Sep 16, 2026
    Notes · 1 min read
  2. 02 Designing a PDF engine you can trust The preview is the product: how Invoice Maker renders vector PDFs with Core Graphics and keeps WYSIWYG honest. Sep 10, 2026
    Notes · 1 min read