Independent studio · Seattle based

Games and audio software, built for Apple platforms.

JD Emerald Studios ships small, focused things: Isolait, an on-device voice-isolation app you can download today; Isolait — Sensory Comfort, in development; and Undertow, a roguelite deckbuilder on the way.

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Work

One app shipping. Two more in the water.

Everything runs on-device, on Apple hardware, and is built by a very small team that sweats the sound.

Isolait Voice Lock screen
Shipping · iOS

Isolait — Voice Isolation

On-device AI voice isolation. Lock onto a voice, follow it through a crowded room, caption and translate it live — and nothing ever leaves your phone.

isolait.ai → App Store
Isolait Sensory Comfort — Calm Mode screen
In development

Isolait — Sensory Comfort

A sound-comfort aid for everyday sound sensitivity. Live dampening and soundscapes, a one-tap Calm Mode with gentle-to-strong settings, and caregiver tools — built with families in mind.

Learn more → Get notified
Undertow — a dive in progress against the Sunken Sentry
In development · iOS

Undertow — roguelite deckbuilder

A roguelite deckbuilder where the tide is the clock. Dive deeper, fight what rises to meet you, and build a deck that turns the rising water into a weapon. The studio's first game.

Ask about it
About

A small studio with a long view.

JD Emerald Studios is an independent, one-person studio, Seattle based. It started as one person shipping one app, and the first product — Isolait — is on the App Store today.

The studio builds at the intersection of interactivity and sound: audio tools that respect your privacy by staying on-device, and games where sound design is part of the mechanics rather than decoration.

It's founder-led and self-funded, which keeps the work honest. The plan is to grow into a small team of developers building under the studio name, one shipped thing at a time.

Based in
Seattle, WA
Platforms
iOS · macOS
Focus
Audio software · Games
Status
Independent · Founder-led
Contact

Say hello.

Press, partnerships, App Store questions, or you just want to talk about sound — one address for all of it.

Seattle based · Replies within a few days