About DataIsland

DataIsland Software LLC builds privacy-first Mac apps for creators, writers, and professionals. Our tools are native, fast, and designed to keep your data on your device — not in the cloud.

Our Philosophy

Most software has shifted toward subscriptions, cloud storage, and accounts. We think that's the wrong direction for professional tools. Our apps are:

Local-first — your data stays on your Mac, not on our servers
One-time purchases — no subscriptions, no annual fees
No account required — download, run, done
Native macOS — built with SwiftUI, not Electron

Our Apps

FusionMD A Markdown document studio with a template engine, AI writing assistant, and IDML export for Affinity and InDesign. The only Markdown editor that goes all the way to professional layout. Learn more →

Ordina File search across every drive you own — internal, external, network, cloud, and remote. One search box. Results in under a second. Learn more →

CheckThis Email phishing and fraud analysis for Apple Mail. A silent Mail extension color-codes your inbox, and one click delivers a full forensic verdict on any email. Learn more →

Contact

For support, questions, or feedback:
support@dataisland.com

We typically respond within 1–2 business days.

Legal

DataIsland Software LLC · Privacy Policies · Terms of Use