Is Synthesia safe with your data?
Synthesia
Partial disclosure · high confidence
Synthesia earns a C (55/100) because it discloses its data practices only in part.
#57
of 216 apps ranked
55
score · Image & video avg 47
+8
vs category average
Synthesia documents biometric and avatar data handling in unusual detail and names a data protection officer, but it does not say whether user inputs train its models, gives no retention period for account data, and never commits to a breach notification timeline.
What Synthesia's privacy policy and terms of service say about your data
Biometric handling is spelled out
The policy names the purposes for facial geometry and voiceprint processing, requires explicit consent for it, holds verification recordings only until the sample comparison completes, and commits to permanently destroying biometric data afterwards, including at its vendors.
Training use is left unstated
Model improvement appears only as a legitimate interest in improving the platform and enhancing model capabilities and safety. The policy never says whether the scripts, voice samples and videos users submit are used to train models, and it names no opt-out.
Retention has no clock
Account data is kept for as long as necessary for the purposes described in the policy, with no number attached, and the policy reserves the right to keep information after an account is deleted to pursue legitimate business interests.
Ownership runs to the employer
Content a user submits is owned by the Customer that bought the subscription, typically their employer, which controls retention, export and deletion settings. The individual user who recorded the voice or likeness holds no ownership and is told to ask the Customer about its plans.
What the policy is silent or vague on
- Not stated: keeping user inputs out of model training
- Not stated: a way to opt out of training
- Not stated: whether training use differs by plan
- Not stated: a deletion timeline after closure or request
Synthesia privacy rating
Details
- Category
- Image & video
- Modalities
- video
- Processes biometrics
- Yes
- Policy last updated
- 2026-10-01
- Region scored
- Global / US-default
- Last assessed
- 2026-10-13
Documents examined
Other image & video apps
Each grade reflects our analysis of what an app states in its public privacy policy and terms as of the assessment date. It measures the transparency of those documents, not the company's actual data practices, security, or compliance. Grades are our opinion, offered for general information. Full disclaimer.