Recommended · for beginners
7$ Function Generator VS 107$ Function Generator
Why people recommend it
GreatScott! compares a very cheap function generator with a somewhat better one, suggested as useful viewing for hobbyists choosing an affordable unit.
Watch for: Hobbyist-level equipment only
In their words
For example, in the video below, do it yourself function generator.
mehmet on electronics.stackexchange.com, Mar 2020. CC BY-SA.