Dozenal Society of America

09/28/2026

An eighth iOS app, named DozArithmetic, has been available, although it's not part of the set of utilities mentioned and described here. It's a group of solitaire games, designed to demonstrate (and indirectly teach) dozenal addition, subtraction, division, and multiplication. Even though the app is in ongoing expansion, dozenalists may be interested in some of its 18[z] current variants.

09/16/2026

This is a colleague's comprehensive discussion of the iOS apps I've created recently, the best description and justification of them and what's behind them.

The link also explains how to find, install, and operate the seven free apps.

08/22/2026

Finally it's all done (for now). There are 7 (not 6) dozenal apps available from the App Store for iOS devices (cost: $0). They are:

DozTimer (counts down)
DozStopwatch (counts up; 60[z] laps available
DozWeather (temperatures, including forecasts)*
DozWeatherPlus (weather station)*
DozClock (digital)
DozAnalogClock (4 or 3 hands)
DozAlarmClock*

*The three apps with asterisks have dual measurements, i.e. both dozenal and decimal. All have various options for display. Several have been improved.

Downloads and questions/comments would be appreciated. My e-mail address is in the Guide file (Dozenal Suite), whose URL is linked on each app screen.

08/19/2026

The analog-looking dozenal clock with up to four hands that I produced about 15 years ago and has been on a website since then has been converted to an iOS app and may appear as such in Apple's App Store within a few weeks, at the same price ($0). This is the one that Carol Off of the Canadian Broadcasting Corporation said would "melt your brain."

08/16/2026

To find the six iOS apps referred to below, you need a search term. Oddly, the only one that I’ve found works well enough is “Duodecimal.” “Dozenal” and (surprisingly) “Uncial” don’t do well currently, nor does looking for an app by its name.

That may change if enough people download these apps. Because of that and because they’re free, people with an Apple mobile device are encouraged to download them, even if they then remove some or all of them.

07/29/2026

The six Apple mobile apps I've produced and mentioned here have been submitted to Apple for sale, at the price of $0.00. A reminder that they are a timer, stopwatch, clock/calendar, alarm clock, temperature data, and weather station. They're considerably improved from what they were some months ago, thanks to two members of the board of the Dozenal Society of America.

The apps are expected to take weeks to be approved and appear in the App Store. Further details here if/when that happens.

04/14/2026

The five iOS apps that Dr. Rapoport mentioned here and has improved recently have a guide at https://dozenal.ca/suite/ . Anyone with an iPhone or iPad running iOS 18 or higher who wishes to join the group of people testing the apps is welcome to ask how to do so. No cost.

The Dozenal Suite is a set of five apps for dozenalists! They’re usable on Apple’s mobiles (iPhone and iPad, with a minimum of iOS 18) and are described below.