One16 App Icon

One16

A fraction calculator designed for woodworkers and makers.

Download on the App Store
iPhone screenshot of One16

Widgets

Our phones are often doing double duty in the shop. Widgets allow you to view the latest answer easily on your lock screen or home screen so that you can get the information you need as quickly as possible without having to reopen the app.

iOS Widgets Lock Screen Widget

Quick Toggle

One16 can easily convert decimals to fractions, and vise versa. Allowing for a wide range of flexibility in how you work.

Quick Toggle Screenshot

Equation Builder

We are usually working with the same measurement several times. Quick Builder allows you to double tape any term in the history tape to quickly reuse, saving you the extra keystrokes.

Equation Builder Screenshot

Left-Handed Mode

Two variants of our calculator keyboard, one for right handed use and one for left handed. We have carefully thought about what buttons are most used, and placed them in easier-to-reach areas.

Left-Handed Keyboard Screenshot

Native & Familiar

Inspired by the standard calculator making One16 instantly familiar.

Built for makers, by makers

Code Carton is a one man company. One16 was created out of frustration with the current fraction calculators that exists on the the Apple ecosystem. The features and design were influenced by what I needed in a app while in the workshop.

One16 App Icon

One16

A fraction calculator designed for woodworkers and makers.

Download on the App Store

Coming soon

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