A premiere unit converter focused on your favorite unit pairs, for iPhone and iPad.

Main feature: Favorite pairs
It's good to have support for obscure units, but most of the time you need just several well chosen pairs.

Unitica allows you to choose any pair of units as a favorite, regardless of their category and have them all available from the same screen:
kmh to mph, km to mi, kg to lb, Celsius to Fahrenheit's etc.

Instant search
- Don't hunt down that particular unit
- Tap search button on any screen, type few letters and Unitica will instantly narrow down the results

- You can choose to use system font/size or choose between Avenir and Helvetica Neue Light
- You can mix and match between 10+ foreground and 4 background colors.
- Create your own dark or light theme

Hundreds of units across many categories
There is no room here to list all the supported units, here's just the list of categories:
- Acceleration
- Angle
- Area
- Data (base of 2 and base of 10)
- Density
- Dynamic Viscosity
- Energy
- Flow
- Force
- Illuminance
- Kinematic Viscosity
- Length
- Luminance
- Mass
- Power
- Pressure
- Speed
- Temperature
- Time
- Torque
- Volume

Perfected for iOS
- Advanced support for iPhone 6 and iPhone 6 Plus
- Fully supports iOS's dynamic type, with either system or custom fonts
- Layout will automatically adjust itself to accommodate changes in content size
- Uses advanced TextKit features for better display of numbers
- Uses iCloud to sync your favorites and whole app state between devices

Note: If you like Unitica, please consider leaving a rating and/or writing a review here on the App Store.
Every little bit helps and reviews goes a long way to support continued development of the app.
Thank you for your time. :)

What's New

Version 4.0

• Advanced support for iPhone 6 and iPhone 6 Plus
• Great landscape mode with the keypad on the side for larger iPhones

Also includes lots of minor bug fixes and improvements.

• NOTE • if you like Unitica, make sure you review it here on the App Store - it helps others find the app and it gives me incentive to develop it further.
Thank you for your time.

Ratings and Reviews

Beautiful & Customisable


This app not only allows the user to convert almost anything, but is also beautifully designed and extremely customisable. In my opinion, it's worth paying for this app rather than using a free, inconveniently designed unit converter.

App Needs More Work


Radiant needs to do more work on their Unitica conversion app. First of all, the demo video which is intended to demonstrate how to use this app, and which was once accessible from the support tab, has not been working for over a year. The problem I have had with this app from the beginning is that it simply does not work! Upon opening the app to show all of the various catagories for conversion I may choose the conversion of temperature category: on the left-hand side of the screen I choose the fahrenheit scale for conversion to the celsius scale on the right-hand side of the screen. When I align the two scales directly opposite one another, with the direction-of-conversion arrow pointing to the final conversion modality, there is then no further ability to imput any information such as specific numeric value(s) to be converted. A dead end is reached! Although the demo video is no longer accessible from the app's support tab it is still available from Radiant's web site. The problem with the demo video is that, in my oponion, is it does not demonstrate clearly enough how to begin and complete a conversion--it rushes too quickly through the process without an actual step-by-step demonstration, i.e., I should be able to perform any conversions by watching and copying each step shown in the video but I cannot because steps are omitted as the demo video is too rushed. I think this app has good potential but right now it's author needs to devote more time to improving the app by simplifying the steps used to make conversions, and especially, by adopting a much more intuitive approach to the User Interface.

Has everything


This app has every conversion tool you could ever need. I've downloaded a few conversion apps out there and this one contains the most units by far. I work in a research lab and it's nice to have lots of conversions on hand. The interface is easy to navigate and the units you use the most can even be bookmarked for faster access. The app does as advertised. A+


Aleksandar Vacic
5.1 MB
Requires iOS 8.3 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Radiant Tap


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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