We are Nonstrict

Two developers building indie apps. We're experts on native Apple platform development. Occasionally we work with clients on their projects.

From our blog

Opinions, learnings and thoughts on apps, business and tech in general.

Apps

[Launching Bezel 4.0

Bezel 4.0 introduces wireless mirroring! The most requested feature since we started. Mirror your iPhone or iPad to your Mac without any cables.](https://nonstrict.eu/blog/2026/launching-bezel-4.0)

Mathijs Kadijk
February 9 · 1 min read

Engineering

[Designing Swift Errors for an SDK

Errors designed for an SDK are different than errors for an app, because errors become API contracts. We describe the pattern we use in RecordKit.](https://nonstrict.eu/blog/2026/designing-swift-errors-for-an-sdk)

Tom Lokhorst
January 29 · 4 min read

Engineering

[The Four Audiences of Swift Errors

Every Swift error you throw serves four audiences at once: users, your catch blocks, the debugger, and Sentry. We have a pattern to deal with all of them.](https://nonstrict.eu/blog/2026/the-four-audiences-of-swift-errors)

Tom Lokhorst
January 27 · 5 min read