Subtractive

A new product studio based in NYC.

We design, build and launch products that people love.

We have deep expertise across the full spectrum of product & brand strategy, research, design & engineering.

We partner with early-stage founders and growth-stage companies looking for more velocity and creative spark. We've developed a proven playbook for rapidly designing, building and launching products that people genuinely love to use.

Our work

We've successfully brought a variety of software products to market, from modern B2B project management to D2C Type 1 diabetes and food allergy management.

Saltie on iPhones Saltie A1C Data Saltie CGM Data Saltie Nutrition Data Saltie Meal View

“Thank you ❤️ this is a total game changer”

— S., T1D parent

We have several software and hardware projects in the works, including a novel smartwatch for Type 1 diabetes parents and kids. The watch presents CGM data playfully, and lets the wearer know their blood glucose discretely using taps on the wrist that speed up or slow down depending on their blood glucose trend.

Canary watch Canary case Canary schematic Canary PCB

“My son has been dying for something like this!”

— J., T1D parent

Canary watch face designs Canary caterpillar watch face

Who we are

Subtractive was founded by Andrew Childs, a veteran product designer, engineer & entrepreneur that previously co-founded the project management company Shortcut.

Get in Touch

We selectively take on outside projects and are always looking for collaborators. If you're ready to make something delightful, let's talk: hello@subtractive.computer