Black hat ASO, or black hat app store optimization, refers to techniques that are used to manipulate an app’s ranking in an app store in order to improve its visibility and increase its chances of being downloaded. These techniques are often considered unethical and may violate the terms of service of the app store.

Some examples of black hat ASO techniques include:

1. Keyword stuffing: This involves using an excessive number of keywords in the app’s title, description, and metadata in an attempt to manipulate its ranking in search results.
2. Fake reviews and ratings: This involves creating fake reviews and ratings for an app in an attempt to boost its overall rating and improve its visibility in the app store.
3. Incentivized downloads: This involves offering incentives, such as discounts or rewards, to users in exchange for downloading an app.
4. Click farming: This involves using automated bots or hiring people to artificially inflate the number of downloads and installs for an app.

Using black hat ASO techniques can lead to an app being removed from the app store and the developer being banned. It is important to avoid using these techniques and to follow the terms of service of the app store to ensure that your app remains in good standing.