Is Grammarly safe with your data?

Grammarly

51/100

Partial disclosure · grade C is 48–59 · high confidence

Scored 51 ± 5 (range 46–56)

The ±5 is measured, not chosen: re-running the grader on identical policy text landed inside this range for 96% of apps. Read a one-grade gap between two apps as noise. How we grade

Grammarly earns a C (51/100) because it discloses its data practices only in part.

#80

of 216 apps ranked

score · Productivity avg 56

-5

vs category average

Grade scaleA · 70–100B · 60–69C · 48–59D · 35–47F · 0–34

Grammarly, now operating as Superhuman, trains its AI models on user content with a settings-based control, keeps user content under a purpose-limited licence that runs for the life of copyright, and names no retention period or breach-notification commitment.

What Grammarly's privacy policy and terms of service say about your data

Training on user content

The policy states that user content is used to train the company's AI models, with the choice left to a training control in account settings rather than being off by default.

No retention period

Retention is described only as "as long as necessary" for providing products, legal obligations and other legitimate business purposes, with no number attached and no deletion timeline after an account closes.

Content licence runs for the life of copyright

Users own their content, but the licence granted to the provider lasts as long as intellectual property laws protect it and extends to service providers, though it is non-exclusive and limited to listed service purposes.

Named privacy contact, silent on breach notice

An external Data Protection Officer is named with a contact address, while the policy sets out no security-breach notification commitment or timeframe and names no security certification.

What the policy is silent or vague on

Not stated: whether training use differs by plan
Not stated: a deletion timeline after closure or request
Not stated: shorter retention for AI conversation logs
Not stated: a data-minimisation commitment

Grammarly privacy rating

Training-data use0 of 4 disclosed

Keeps user inputs out of model training, or makes training opt-inPartial

Names a way to opt out of or into trainingPartial

Says whether training use differs by plan or tierSilent

Lets the user keep ownership of generated outputsPartial

Data-subject rights1 of 5 disclosed

Grants a right to access your dataPartial

Grants a right to delete your dataPartial

Offers data portability in a usable formatPartial

Grants a right to correct your dataPartial

Grants a way to object to or opt out of processingDisclosed

Retention and deletion0 of 4 disclosed

States a retention period for your dataPartial

States a deletion timeline after closure or requestSilent

Sets a shorter retention for AI conversation logsSilent

Commits to collecting only the data it needsSilent

Third-party sharing1 of 5 disclosed

Lists the categories of third parties it shares withDisclosed

References a sub-processor list or data processing agreementPartial

Does not sell or share data for advertising, or offers opt-outPartial

Names a safeguard for international data transfersPartial

States a standard for government and law-enforcement accessSilent

Transparency4 of 5 disclosed

Discloses that you are interacting with AIDisclosed

Marks AI-generated or synthetic outputSilent

Enumerates the categories of data it collectsDisclosed

Maps processing purposes to legal basesDisclosed

Is versioned and dated, with change noticeDisclosed

Sensitive data and children2 of 4 disclosed

Discloses automated decisions and a human-review pathSilent

Limits the use of special-category dataDisclosed

Governs biometric data specificallySilent

States protections for children's dataDisclosed

Security and accountability1 of 3 disclosed

Describes its security safeguardsPartial

Commits to breach notificationSilent

Names a certification or a privacy contactDisclosed

DisclosedPartialSilentAdverseNot applicable

Details

Category: Productivity
Modalities: text
Processes biometrics: No
Policy last updated: 2026-07-06
Region scored: Global / US-default
Last assessed: 2026-10-13

Documents examined

Other productivity 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.