To use the NetGeist API services from RapidAPI, follow these steps:

1. Sign up for a RapidAPI account and subscribe to the NetGeist API.

2. Once you have subscribed to the NetGeist API, you will receive an API key that you will need to include in your API requests.

3. Choose the programming language you prefer to use and check the code snippet examples available on the NetGeist API Endpoints page.

4. To make a request to the NetGeist API, you will need to use the appropriate API endpoint and provide the required parameters. For example, to get the metadata of an app, you can use the “App Metadata” endpoint and provide the app ID as a parameter.

5. Parse the response returned by the API and use the data to analyze and categorize text data, monitor app reviews, or extract valuable topics from user reviews.

Here’s an example code snippet in Python that demonstrates how to use the NetGeist API to get the reviews of a given app sorted by timestamp:

import requests

url = "https://netgeist-app-review-monitoring.p.rapidapi.com/app/<APP_ID>/reviews"

querystring = {"dateFrom":"2020-01-01T00:00:00","dateTo":"2022-01-01T00:00:00"}

headers = {
	"X-RapidAPI-Key": "<YOUR_API_KEY>",
	"X-RapidAPI-Host": "netgeist-app-review-monitoring.p.rapidapi.com"
}

response = requests.request("GET", url, headers=headers, params=querystring)

print(response.text)

In the code above, replace <APP_ID> with the ID of the app you want to get the reviews for, and <YOUR_API_KEY> with your RapidAPI API key.

Similar code snippets are available in other programming languages such as Node.js, Java, and Ruby. Simply select the language you are most comfortable with from the drop-down menu on the NetGeist API Endpoints page to view the available code snippets.