I've seen many people talk about money-making apps, and there are indeed many options if you're looking for extra income.

The topic isn't limited to just one app.

There are survey apps like Swagbucks and Survey Junkie if you enjoy filling out surveys and watching videos, some people earn small but steady amounts from them.
Then, if you have certain skills, Upwork and Fiverr offer freelance opportunities in design, writing, programming, and other areas.

Regarding selling, eBay and Etsy are popular if you have items to sell or handmade products.
There are also cashback programs like Rakuten and Ibotta, where you earn money every time you buy certain things.
Even transportation and delivery apps like Uber and DoorDash can be sources of income if you have the time.

The truth is, the money-making program you choose depends on your time and skills.
But it's important to read reviews and terms before starting, because not all apps are equal, and the earnings vary greatly from one to another.