232 APPS TRACKED · 227 CLAUSES ON FILE · 38 WITH NO CLAUSE TO QUOTE
Is It Training on Me?
· education

Duolingo vs Babbel

On what the policies say, Duolingo is the better choice for your data: graded D against Babbel's F.

Grades read the plan most people are on. Each company's full entry has every plan, every clause and the archived copy it was read from.

Duolingo

Duolingo records the text and audio you submit and uses it to train its own AI models. A Settings toggle covers the audio. For the text you type there is no setting, only the right to object.

Verdict
D
By default
Trains on you by default
The way out
A self-serve opt-out exists
What D means
On by default. An opt-out exists, but you have to go looking for it.
Last checked
5 Oct 2026
Read the full verdict →

Babbel

Babbel trains its AI on learner data under legitimate interest; anonymised support chats train its "Bab" chatbot. The only carve-out, for chatbot conversations, covers business contacts, not learners.

Verdict
F
By default
Trains on you by default
The way out
No opt-out in the policy
What F means
On by default, with no way out on the plan you are on — and nothing short of reading the terms would have told you.
Last checked
5 Oct 2026
Read the full verdict →

Duolingo: every plan

Free & Super/MaxTRAINS: YES
OPT-OUT
Self-serve toggle
RETENTION
Not stated
EXPOSURE
51 / 100
DE-IDENTIFIED
Qualified
HUMAN REVIEW
Unknown
Child Users (under the age of digital consent)TRAINS: NO
OPT-OUT
Nothing to switch off
RETENTION
Not stated
EXPOSURE
18 / 100
DE-IDENTIFIED
Not stated
HUMAN REVIEW
Unknown

Babbel: every plan

All accountsTRAINS: YES
OPT-OUT
None offered
RETENTION
Not stated
EXPOSURE
87 / 100
DE-IDENTIFIED
Qualified
HUMAN REVIEW
Unknown

Every grade on this page is the one on the company's own entry, read from a dated, archived copy of its policy. Nothing here is computed separately. How grades are set · All comparisons