Is Grammarly safe with your data?

Grammarly

47/100

Weak disclosure · high confidence

Grammarly earns a D (47/100) because it leaves much about its data practices unstated.

#94

of 216 apps ranked

score · Productivity avg 56

-9

vs category average

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

Grammarly (now Superhuman) trains its AI models on user content unless you switch the training control off, and its terms keep a content licence that lasts as long as copyright does.

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

Trains on your content by default

User content feeds AI model training unless you change the training control in account settings, so the protective setting is one you have to find and switch yourself.

Content licence runs as long as copyright

The terms take a worldwide licence to use, reproduce, modify and create derivative works from your content for purposes including developing new products, and that licence lasts as long as intellectual property laws protect the content.

No retention clock and no breach promise

Data is kept "as long as necessary" with no stated number of days, and the policy never says it will tell you if your data is exposed.

Rights depend on where you live

Access, deletion, correction and portability are set out under US state privacy laws and EEA/UK law rather than offered to every user as a baseline.

What the policy is silent or vague on

Not stated: whether training use differs by plan
Not stated: your ownership of generated outputs
Not stated: a deletion timeline after closure or request
Not stated: shorter retention for AI conversation logs

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 outputsSilent

Data-subject rights2 of 5 disclosed

Grants a right to access your dataDisclosed

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 needsPartial

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 accessPartial

Transparency2 of 4 disclosed

Discloses that you are interacting with AIDisclosed

Marks AI-generated or synthetic outputNot applicable

Enumerates the categories of data it collectsDisclosed

Maps processing purposes to legal basesPartial

Is versioned and dated, with change noticePartial

Sensitive data and children1 of 2 disclosed

Discloses automated decisions and a human-review pathNot applicable

Limits the use of special-category dataDisclosed

Governs biometric data specificallyNot applicable

States protections for children's dataPartial

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.