Grammarly

AI writing assistant for grammar, style, clarity, and generative content creation

Turnitin

US AI detection and academic integrity platform for education institutions

Grammarly

Strong

17/25

Turnitin

Strong

17/25

Score Breakdown

DimensionGrammarlyTurnitin

Data Residency

Where is your data stored and processed?

Grammarly: Data hosted exclusively in US AWS East; no EU or regional residency option

Turnitin: EU hosting available (AWS Dublin) but requires explicit Enterprise-level configuration; US default otherwise

2/5

Data hosted exclusively in US AWS East; no EU or regional residency option

3/5

EU hosting available (AWS Dublin) but requires explicit Enterprise-level configuration; US default otherwise

Legal Jurisdiction

Which laws govern the company and your data?

Grammarly: US Delaware corporation subject to CLOUD Act; GDPR compliance via SCCs and DPA

Turnitin: US Delaware corporation; CLOUD Act applies to student data; DPA with SCCs available for EU institutions

2/5

US Delaware corporation subject to CLOUD Act; GDPR compliance via SCCs and DPA

2/5

US Delaware corporation; CLOUD Act applies to student data; DPA with SCCs available for EU institutions

Data Retention & Training

Is your data used for model training?

Grammarly: User data not sold; limited processing for product improvement with user controls

Turnitin: Submissions stored for similarity comparison (core function); not used to train AI models; configurable retention

4/5

User data not sold; limited processing for product improvement with user controls

4/5

Submissions stored for similarity comparison (core function); not used to train AI models; configurable retention

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Grammarly: Extensive certification: SOC 2 Type II, ISO 27001/18/701, ISO 42001

Turnitin: ISO 27001, SOC 2 Type II, and Cyber Essentials Plus — strong for an EdTech platform

5/5

Extensive certification: SOC 2 Type II, ISO 27001/18/701, ISO 42001

5/5

ISO 27001, SOC 2 Type II, and Cyber Essentials Plus — strong for an EdTech platform

Regulatory Fit

Suitability for regulated industries and professional services

Grammarly: Strong enterprise compliance posture; US-only hosting limits suitability for EU data residency mandates

Turnitin: GDPR DPA available; EU hosting option exists; institutions must explicitly configure EU residency for student data

4/5

Strong enterprise compliance posture; US-only hosting limits suitability for EU data residency mandates

3/5

GDPR DPA available; EU hosting option exists; institutions must explicitly configure EU residency for student data

Total Score

17/25

Best For

Grammarly

Best for organisations requiring broad certification coverage (SOC 2 Type II, ISO 27001, ISO 27018); privacy-conscious teams who need strong data retention controls; teams on a tight budget.

Turnitin

Best for organisations requiring broad certification coverage (ISO 27001, SOC 2 Type II, Cyber Essentials Plus); privacy-conscious teams who need strong data retention controls.

Detailed Comparison

Grammarly vs Turnitin: Trust & Compliance Comparison

Grammarly (Grammarly, Inc., US) scores 17/25 overall with a Silver (Strong) trust badge. AI writing assistant for grammar, style, clarity, and generative content creation. Turnitin (Turnitin, US) scores 17/25 with a Silver (Strong) trust badge. US AI detection and academic integrity platform for education institutions.

Dimension-by-Dimension Breakdown

#### Data Residency

Turnitin leads with 3/5 vs 2/5.

●Grammarly (2/5): Data hosted exclusively in US AWS East; no EU or regional residency option

●Turnitin (3/5): EU hosting available (AWS Dublin) but requires explicit Enterprise-level configuration; US default otherwise

#### Legal Jurisdiction

Both score equally at 2/5.

●Grammarly (2/5): US Delaware corporation subject to CLOUD Act; GDPR compliance via SCCs and DPA

●Turnitin (2/5): US Delaware corporation; CLOUD Act applies to student data; DPA with SCCs available for EU institutions

#### Data Retention & Training

Both score equally at 4/5.

●Grammarly (4/5): User data not sold; limited processing for product improvement with user controls

●Turnitin (4/5): Submissions stored for similarity comparison (core function); not used to train AI models; configurable retention

#### Certifications

Both score equally at 5/5.

●Grammarly (5/5): Extensive certification: SOC 2 Type II, ISO 27001/18/701, ISO 42001

●Turnitin (5/5): ISO 27001, SOC 2 Type II, and Cyber Essentials Plus — strong for an EdTech platform

#### Regulatory Fit

Grammarly leads with 4/5 vs 3/5.

●Grammarly (4/5): Strong enterprise compliance posture; US-only hosting limits suitability for EU data residency mandates

●Turnitin (3/5): GDPR DPA available; EU hosting option exists; institutions must explicitly configure EU residency for student data

Certifications at a Glance

Certification	Grammarly	Turnitin
Cyber Essentials Plus	No	Yes
ISO 27001	Yes	Yes
ISO 27018	Yes	No
ISO 27701	Yes	No
ISO 42001	Yes	No
SOC 2 Type II	Yes	Yes

Overall Verdict

Grammarly and Turnitin are closely matched on trust and compliance, with scores of 17/25 and 17/25 respectively. The right choice depends on your specific regulatory requirements and existing technology stack.

Frequently Asked Questions

Which is better for EU compliance, Grammarly or Turnitin?

Grammarly has a TrustKit score of 17/25 while Turnitin scores 17/25. Both tools are currently rated equally across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Grammarly and Turnitin compare on data residency?

Grammarly scores 2/5 for data residency (Data hosted exclusively in US AWS East; no EU or regional residency option), while Turnitin scores 3/5 (EU hosting available (AWS Dublin) but requires explicit Enterprise-level configuration; US default otherwise).

Are Grammarly and Turnitin GDPR compliant?

Both tools are assessed across five compliance dimensions. Grammarly has a regulatory fit score of 4/5 and Turnitin scores 3/5. Check the full comparison above for a detailed breakdown.

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