Brainly

No training on personal data

Section 9 states twice that Brainly does not use your personal data for training models, and Notes audio recordings are transcribed locally on the device and are not stored or processed by Brainly. This is the most favorable training posture a policy can take.

Full data-subject rights

Section 10 grants access, correction, deletion via Preferences, portability in machine-readable form, objection, and restriction, plus an opt-out of sales and targeted advertising. Every standard right is covered.

Named transfer safeguard

Section 5 commits to requiring data recipients to sign and abide by the Standard Contractual Clauses approved by the European Commission. The international transfer indicator is met with a named mechanism.

Security and retention gaps

The policy never describes any security safeguards or breach notification process. Section 6 retains data for so long as it may be relevant to the purposes and as long as you have an account, with no fixed day-count, which leaves retention vague.