Ижица is a keyboard application for Android devices that brings back the old-style Russian alphabet. The keyboard contains the four letters that were excluded from the modern Russian alphabet in 1918: yat (ѣ), fita (ѳ), decimal i (і), and izhitsa (ѵ).

This keyboard supports capital letters and allows users to switch to other keyboard layouts. It also provides a quick and easy way to type yat, yo, fita, decimal i, and izhitsa by double-tapping or long-pressing the letters 'ь', 'е', 'ф', and 'и', respectively.

Overall, Ижица is a useful keyboard application for those who need to type in old-style Russian or want to learn more about the history of the Russian alphabet. It is a free application and can be downloaded from the Google Play Store.