JD Emerald Studios ships small, focused things: Isolait — Voice Isolation, an on-device voice-isolation app; Isolait — Sensory Comfort, a sound-comfort aid for sound sensitivity; and two games, Striker Run and Undertow: Endless Dive. All four are on the App Store today.
Everything runs on-device, on Apple hardware, and is built by a very small team that sweats the sound.
On-device voice isolation. Lock onto a voice, follow it through a crowded room, caption and translate it live, in an app available in 24 languages — and nothing ever leaves your phone.
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 — now available in 35 languages, built with families, classrooms, and everyday sound sensitivity in mind. On-device only.
An endless runner with a football: dodge the barriers, grab the shields, beat your best. One thumb, quick sessions, free to play. The studio's first game on the App Store.
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.
JD Emerald Studios is an independent, one-person studio, based in the Greater Seattle Area. It started as one person shipping one app; today Isolait — Voice Isolation, Isolait — Sensory Comfort, Striker Run, and Undertow: Endless Dive are all on the App Store.
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.
Press, partnerships, App Store questions, or you just want to talk about sound — one address for all of it.
hello@jdemeraldstudios.com