Triatlas is an iPhone app designed by DDQ, available for free in the Education & Reference category. This app offers users the most detailed and rapid star chart accessible on smartphones and tablets. With Triatlas, users can explore stars up to magnitude 12.6, galaxies up to magnitude 15.5, including 37,000 in total, 1200 planetary nebulae, 1800 open clusters, and all globulars. Additionally, users can discover other celestial objects like SH-2, RCW, LDN/Barnard, double stars brighter than 11th magnitude, totaling 35,000, and variable stars reaching up to 12.5 magnitudes, amounting to 29,000.

The app also features a flexible Night vision mode, supporting both landscape and portrait orientations, flip and mirror functions to align with telescope orientation, and chart-to-chart navigation facilitated by the black corners. Triatlas's charts are based on the work of Jose Torres, used with permission.