Making stuff is fun. Math isn't. Making the most of our precious time in the shop is critical. One16 helps you spend less time calculating and more time building.
One16 V4 has been rebuilt from the ground up with a redesigned interface, full feet-and-inches support, and faster access to the tools you use most.
Enter measurements naturally, then add, subtract, multiply, or divide fractions and decimals. Choose your preferred rounding precision and switch between standard and feet-and-inches input directly from the calculator toolbar.
The redesigned history tape makes answers easier to distinguish and previous calculations easy to reuse. Double-tap a value to bring it back into the calculator, copy individual values to the clipboard, or copy an entire equation to share elsewhere.
Redesigned widgets keep your latest full equation and answer visible at a glance. You can also open One16 quickly from Control Center, the Lock Screen, or Shortcuts.
One16 includes thoughtful details for working quickly: optional denominator keys, haptic feedback, automatic keypad hiding while scrolling, decimal-to-fraction conversion, and fraction simplification.
Privacy is at the core of all our products. One16 doesn't track any data about you or how you use the app. If you find a bug or have a feature suggestion, please reach out. We love hearing from our users!
Full feature list:
- Feet-and-inches calculations
- Redesigned calculation history
- Add, subtract, multiply, and divide fractions and decimals
- Rounding presets: 1/64, 1/32, 1/16, 1/8, 1/4, 1/2, and 1
- Quick rounding and unit controls
- Decimal-to-fraction conversion
- Fraction simplification
- Optional denominator keyboard
- Copy individual values or complete equations
- Double-tap previous values for quick entry
- Haptic feedback
- Automatically hide the keypad while scrolling
- Widgets with your latest full equation
- Control Center, Lock Screen, and Shortcuts access
- Privacy focused
One16 is built by a weekend woodworker with a family and a full-time job. That's who this app is designed for. Have a feature suggestion? Let us know!
The app is simple to use, does what claims to do, doesn't collect personal data, doesn't need a subscription, and is not cluttered with ads. Worth every penny I paid. The developer also listens and responds to feedback!
Developer Response
Thank you for the kind words!
Very good app
Forcedndontlikit
I originally gave this app a two star. Not because of how you use it but rather because I did not notice that there was a one time charge. Since then it was pointed out that there is notice of a one time charge and I feel it fair to say that this app is worth the charge. I have found it useful when building projects. And it is simple to use.
Developer Response
Hello,Thank you for taking the time to share your thoughts about our woodworking app. I appreciate your feedback and am glad to hear that you find my app useful.I apologize for any confusion regarding the app's pricing structure. Transparency is important to us, and we are sorry if this wasn't clear at the outset. To clarify, the app is a one time purchase from the App Store. The price was listed on the Purchase button and confirmation dialog Apple presents when confirming the purchase.You are welcome to reach out to Apple for the steps required to get a refund for the purchase. Since the purchasing is handled through Apple and its App Store, I don’t have any way of refunding the purchase.If you have any more questions or require further assistance, please feel free to reach out to me at hello@codecarton.comBest regards,JordanCode Carton
Bravo!
Where’s Yayo
Everything you need, nothing you don't.
Developer Response
Thank you for the review and kind words!
Fantastic utility
kc! Bradshaw
So good—and it’s totally come in handy many times during my bathroom remodel.
Developer Response
Hey kc!Thank you for the kind words! I was a pleasure getting to chat with you!
Now featuring feet and inch unit support!
Version 4.0.0
The developer, Code Carton, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
