Omega Tau Weather app for iPhone and iPad

Use this app if you want relevant readable weather without distractions. The Omega Tau Weather universal application (otau) shows data for the current weather conditions and forecasts, a clock with sunrise, sunset, moon rise and moon set times, and GPS speed, direction and location. This app has a high "signal to noise" ratio with a clean readable interface and no ads. Weather and other metrics are shown in English units.

For night use, the red text on a black background mode provides high contrast for dark adaptation and sleep hygiene.

It takes several minutes for your eyes to fully adapt to seeing in the dark, and as you get older it usually takes longer. The cone receptors in your eye can read with red light which minimally interferes with your rod receptors that allow you to see in the dark (see Purkinje Effect). Also, by using red on black and not using colors with a blue element, such as white, that can suppress melatonin, this mode supports sleep hygiene. This red on black mode may be useful for night workers, hikers, astronomers, and other tasks in low light.

For daytime use, the red text on a white background mode provides for excellent readability in bright conditions.

The app automatically starts with weather for the users current GPS location. Then the user can use the keyboard to type or dictate a different city in the text entry area to get weather data for that location. The weather and GPS data display can be scrolled in portrait or landscape to view more text detail for forecasts, and can be pinched to zoom in or out for readability.

Buttons can be used to set white or black background, send a text message or email with weather and location information, or to look up a wikipedia entry for the current location text entry. Prior location entries can be selected using back and forth arrows to reduce typing. With help on tap functionality, the buttons, icons and data can be tapped to get short descriptions.

The following information is shown:

Time Cluster for current location
* Sunrise
* Mid-point of Sun
* Sunset
* Moon Rise
* Moon Percent Illumination
* Moon Set

Speed Cluster for current location with direction of travel
* Latitude
* Longitude
* Altitude

Temperature Cluster for current or entered location
* Maximum Temperature
* Feels Like Temperature
* Minimum Temperature

Weather Cluster for current or entered location
* Barometer level and trend
* Humidity
* Wind Direction and Speed

Environment Cluster for current or entered location
(U.S./Mexico locations with air quality sensors)
* Air Quality Index for fine particles (PM2.5)
* Ozone level (O3)
* Solar Radiation (SR)
* Ultraviolet Level (UV)

Forecast Text
* Current Day/Evening
* Tomorrow Day/Evening
* Third Day/Evening
* Fourth Day/Evening