There are many advertisements in Huajuanyun market, but the background is too messy, and the database is in their server. As long as the fee is not renewed in the second year, the leek will be cut, and the users you develop will belong to them unless the fee is renewed.
Programmers are also widely publicized. His program was modified by stealing other people's programs. When there were few Taobao apps on the market, it was easy to go to the Apple Store. It is too difficult for programmers to go to the Apple Store now, and the OPPO App Store is also very sad.
It is enough to do App10,000 in the early stage, and mainly spend money in the later stage.