Duolingo is an international test which takes you a shorter time. This is much cheaper than other international certificates. The result of this exam is issued after 48 hours. The classes for this exam are held privately and you can achieve your desired score in a span of 3-6 months depending on your language proficiency.
Participation in all Online classes of IELTS Club requires a careful analysis of your English proficiency
After you know your proficiency level in English, it is time to go for classes