应用 + 程序 / Modifier + 程序
程序 (chéngxù) is a noun meaning "program," "procedure," or "process." In technology contexts, it refers to a computer program or application. It also means "procedure" in formal or legal contexts. The compound 应用程序 specifically means "application program" or "app."
这个程序运行得很慢,需要优化。
Zhège chéngxù yùnxíng de hěn màn, xūyào yōuhuà.
This program runs very slowly and needs to be optimized.
请按照规定的程序办理手续。
Qǐng ànzhào guīdìng de chéngxù bànlǐ shǒuxù.
Please follow the prescribed procedures to complete the paperwork.
他正在开发一个新的应用程序。
Tā zhèngzài kāifā yí ge xīn de yìngyòng chéngxù.
He is developing a new application.