1, cross-platform difference: uniapp is a cross-platform development framework, which can generate applications suitable for multiple platforms at the same time, such as iOS, Android, Web and so on. Wechat applets can only run in the WeChat ecosystem.

2. Different functional restrictions: WeChat applet has some functional restrictions, such as not being able to use some underlying system functions, such as Bluetooth and camera. Uniapp has no restrictions such as Bluetooth and camera.