I have also seen the test of the netizen mentioned by the topic friend. Because the applet does not need to be downloaded and attached to WeChat, we can know whether the installed applet occupies memory by comparing the space occupied by WeChat before and after the applet is installed. The experimental results have hardly changed before and after!

Netizens also tested the use of small programs and found that some small programs will produce cached data and occupy memory, while others will not.

When you delete an applet, you will be prompted to delete it along with the cached data.

This can also be officially confirmed from the side. Wechat limits the size of the applet to 2M, and at the same time limits the data generated during the running of the applet to 10M. Small programs whose size exceeds 2M or whose generated data exceeds 10M will be formally rejected! So the space that a small program can occupy is about 12M! This data is really negligible for the storage space of our mobile phone!

Although the App needs to be downloaded and installed, it does have a lot more functions than the applet version, so the space occupied by the software itself, plus the space occupied by the data, will be a lot. Although applets occupy almost no memory, they do have only core functions.

Whether to use an app or a small program depends on personal preferences and needs.

I hope my answer will satisfy you.