For a journalist, I like to think I’m pretty good with numbers, but there are certain types of calculations that trip me up, or at least make me think twice — such as trying to split the bill at a restaurant after dinner and drinks, or calculating someone’s age from a birthdate.

Calcul8 aims to solve those types of problems, literally. It’s a calculator, at its core, but the interface is designed to help users with everyday calculations, including percentages, sale prices, splitting restaurant bills (tax and tip included), and calculating dates, among many other practical applications.

The app for iPhone and iPad normally sells for $1.99, but it’s on sale now for 99 cents.

App of the Week is a regular feature of the GeekWire radio show and podcast, airing at 7 a.m. and 9 p.m. Saturdays; and 8 a.m. and 2 p.m. Sundays on 97.3 KIRO-FM in Seattle (when not preempted by live sports). The show runs every weekend on You can get every episode using this RSS feed, subscribe in iTunes. or search for the show on Stitcher.

Here’s the audio of this week’s segment.


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