I used Insta-Parser to create a database on Instagram for promotion. I hadn't used such services before, but it turned out to be not that difficult. The main thing is to clearly understand your goals. There are several ways to collect a database: - By competitors (this method I use most often) - By hashtags - By geolocation You need to choose one of the methods and specify the parameters for collection. For example, when I collected a database by competitors, I entered their accounts and selected to gather their followers. When using geolocation, you can choose a city and geotags. After launching, the service starts collecting the database, and this will take some time. Then you can export the database or filter it. For instance, you can select the gender of followers, the number of their subscriptions, and so on. There is also an option to immediately exclude stores and private accounts. As a result, you get a list of accounts where you can launch promotions. The service is inexpensive and saves a lot of time. Collecting such a database manually would be nearly impossible.