ncnn

ncnn is a tool that lets developers run artificial intelligence models directly on mobile phones and other devices, without needing a connection to a server or cloud. In simple terms, it acts as a bridge that takes an AI model (the trained brain that makes predictions or decisions) and runs it efficiently on the limited computing power available in a smartphone.

The problem it solves is that most AI processing happens on powerful remote servers, which means apps need an internet connection and pay ongoing cloud costs. ncnn eliminates that dependency by squeezing the same AI calculations into the phone's own processor, running faster than other publicly available options for this purpose.

Developers use ncnn by integrating it into their Android or iOS app. They load their trained AI model into ncnn, and it handles the heavy computation locally on the device. This makes AI features work offline, faster, and more privately. Tencent uses it in their own products like WeChat.

You would reach for ncnn when building a mobile app that needs AI features such as image recognition, face detection, or object identification, and you want those features to work without an internet connection or cloud API costs. It supports Android, iOS, macOS, Windows, Linux, and other platforms. The primary programming language is C++.