Duolingo vs IELTS vs TOEFL

	Duolingo	IELTS	TOEFL
Cost	$49	$215-240	225$
Length	1 hour	2 hours 45 mins	3 hours
Reporting Fees	Free	Free	4 reports then $20
University that accept	2000+ university around the world	almost everywhere	almost everywhere
Mode	Online	In Person	In Person (Computer Based)
Reservation	Take anytime	Reservation needed	Reservation Needed
Preparation Material	Limited	Abundant	Abundant
How often can be taken	Twice in every 30 days	No limits	12 days
Valid For	2 years	2 years	2 years
Score are ready in	2 days	13 days	6 days