Contagious Development

Building Tools That Inspire.

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Atlas

Atlas offers a powerful writing and idea collection environment that brings structure to your work without getting in the way. Combining project organization, versatile canvases, and markdown support in one beautifully native app, Atlas is designed to foster creativity and creation.
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Available for macOS, iPad, and iPhone
Atlas on macOS
Fox Issue Tracker App

Fox Issue Tracker

A simple project manager for simple developers. Designed as a way to escape expensive and complicated management systems, Fox Issue Tracker strives to be an effective tool at keeping projects in order.
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Available for macOS, iPad, and iPhone
Fox Issue Tracker
Benchmark entry screen in Dark Mode
Benchmark App

BenchmarkiOS

Track your Workouts

Benchmark is a fitness companion to support your workout journey. Log and automatically set rest times during sessions, create routines for frequent workouts, and dive into your workout history to witness your achievements and stay motivated as you stack weight and add time to your exercises.
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Recent Releases

Atlas 1.7.1: Smoother Markdown Image Resizing and Dynamic Sizes 1.7.1

Smoother Markdown Image Resizing and Dynamic Sizes

September 2, 2026

Images in Atlas’s markdown editor should now resize smooth as butter—and you don’t even need to enter a resize mode anymore! Just select and grab the handle. There are also a new small, medium, and large dynamic size options that can be used in editor and export.

Atlas
Atlas 1.6.3: Export Style editor, Editor Theme fixes, Text Zoom Shortcut 1.6.3

Export Style editor, Editor Theme fixes, Text Zoom Shortcut

August 22, 2026

A brief update that brings a new export style customizer for ePub and HTML. Meanwhile editor themes get several fixes, including better Ulysses theme conversion and the Flexoki theme. As an honorable mention, text zoom in the editor can now be triggered by CMD + “+” and CMD + “-“.

Atlas