Omnifact

German enterprise AI platform with privacy filter and EU data hosting

Lumo (Proton)

Privacy-first AI assistant from the makers of ProtonMail, with Swiss jurisdiction and zero-access encryption

Omnifact

Strong

19/25

Lumo (Proton)

Excellent

23/25

Score Breakdown

DimensionOmnifactLumo (Proton)

Data Residency

Where is your data stored and processed?

Omnifact: EU data hosting with self-hosted deployment option. Privacy Filter prevents sensitive data from reaching external AI providers. German company with EU-only infrastructure.

Lumo (Proton): Data hosted in Proton's own data centres in Germany and Norway. Zero-access encryption means even Proton cannot read conversation content. No US infrastructure dependency.

5/5

EU data hosting with self-hosted deployment option. Privacy Filter prevents sensitive data from reaching external AI providers. German company with EU-only infrastructure.

5/5

Data hosted in Proton's own data centres in Germany and Norway. Zero-access encryption means even Proton cannot read conversation content. No US infrastructure dependency.

Legal Jurisdiction

Which laws govern the company and your data?

Omnifact: German GmbH incorporation under EU law. Frankfurt headquarters. Full GDPR coverage. No US parent company or CLOUD Act exposure.

Lumo (Proton): Swiss incorporation provides one of the strongest privacy jurisdictions globally. Outside US CLOUD Act reach. Swiss FADP and GDPR adequacy. Proton has a decade-long track record of defending user privacy.

5/5

German GmbH incorporation under EU law. Frankfurt headquarters. Full GDPR coverage. No US parent company or CLOUD Act exposure.

5/5

Swiss incorporation provides one of the strongest privacy jurisdictions globally. Outside US CLOUD Act reach. Swiss FADP and GDPR adequacy. Proton has a decade-long track record of defending user privacy.

Data Retention & Training

Is your data used for model training?

Omnifact: Privacy Filter masks sensitive data before it reaches any AI model. Self-hosted option gives complete data control. User data not used for training.

Lumo (Proton): Zero-access encryption on conversations. User data explicitly never used for model training. Open-source code enables independent verification of privacy claims.

5/5

Privacy Filter masks sensitive data before it reaches any AI model. Self-hosted option gives complete data control. User data not used for training.

5/5

Zero-access encryption on conversations. User data explicitly never used for model training. Open-source code enables independent verification of privacy claims.

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Omnifact: No formal certifications yet. Expected for a pre-seed company. GDPR compliant by design. Certifications will be important as the company scales.

Lumo (Proton): ISO 27001 and SOC 2 at Proton AG organisational level. Strong for a consumer-facing privacy product. ISO 27701 would further strengthen the posture.

1/5

No formal certifications yet. Expected for a pre-seed company. GDPR compliant by design. Certifications will be important as the company scales.

4/5

ISO 27001 and SOC 2 at Proton AG organisational level. Strong for a consumer-facing privacy product. ISO 27701 would further strengthen the posture.

Regulatory Fit

Suitability for regulated industries and professional services

Omnifact: Privacy Filter approach is conceptually strong for regulated industries. German jurisdiction and EU hosting are positive. Lack of certifications currently limits enterprise procurement in regulated sectors.

Lumo (Proton): Excellent fit for privacy-sensitive professionals in legal and financial services. Swiss jurisdiction, zero-access encryption, and no training on user data address key regulatory concerns. Not EU-incorporated but GDPR adequate.

3/5

Privacy Filter approach is conceptually strong for regulated industries. German jurisdiction and EU hosting are positive. Lack of certifications currently limits enterprise procurement in regulated sectors.

4/5

Excellent fit for privacy-sensitive professionals in legal and financial services. Swiss jurisdiction, zero-access encryption, and no training on user data address key regulatory concerns. Not EU-incorporated but GDPR adequate.

Total Score

19/25

23/25

Best For

Omnifact

Best for EU-headquartered organisations needing maximum data sovereignty; regulated industries (legal, financial-services); privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment; teams on a tight budget; enterprises requiring SSO integration.

Lumo (Proton)

Best for EU-headquartered organisations needing maximum data sovereignty; privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment.

Detailed Comparison

Lumo (Proton) vs Omnifact: Trust & Compliance Comparison

Lumo (Proton) (Proton, CH) scores 23/25 overall with a Gold (Excellent) trust badge. Privacy-first AI assistant from the makers of ProtonMail, with Swiss jurisdiction and zero-access encryption. Omnifact (Omnifact, DE) scores 19/25 with a Silver (Strong) trust badge. German enterprise AI platform with privacy filter and EU data hosting.

Dimension-by-Dimension Breakdown

#### Data Residency

Both score equally at 5/5.

●Lumo (Proton) (5/5): Data hosted in Proton's own data centres in Germany and Norway. Zero-access encryption means even Proton cannot read conversation content. No US infrastructure dependency.

●Omnifact (5/5): EU data hosting with self-hosted deployment option. Privacy Filter prevents sensitive data from reaching external AI providers. German company with EU-only infrastructure.

#### Legal Jurisdiction

Both score equally at 5/5.

●Lumo (Proton) (5/5): Swiss incorporation provides one of the strongest privacy jurisdictions globally. Outside US CLOUD Act reach. Swiss FADP and GDPR adequacy. Proton has a decade-long track record of defending user privacy.

●Omnifact (5/5): German GmbH incorporation under EU law. Frankfurt headquarters. Full GDPR coverage. No US parent company or CLOUD Act exposure.

#### Data Retention & Training

Both score equally at 5/5.

●Lumo (Proton) (5/5): Zero-access encryption on conversations. User data explicitly never used for model training. Open-source code enables independent verification of privacy claims.

●Omnifact (5/5): Privacy Filter masks sensitive data before it reaches any AI model. Self-hosted option gives complete data control. User data not used for training.

#### Certifications

Lumo (Proton) leads with 4/5 vs 1/5.

●Lumo (Proton) (4/5): ISO 27001 and SOC 2 at Proton AG organisational level. Strong for a consumer-facing privacy product. ISO 27701 would further strengthen the posture.

●Omnifact (1/5): No formal certifications yet. Expected for a pre-seed company. GDPR compliant by design. Certifications will be important as the company scales.

#### Regulatory Fit

Lumo (Proton) leads with 4/5 vs 3/5.

●Lumo (Proton) (4/5): Excellent fit for privacy-sensitive professionals in legal and financial services. Swiss jurisdiction, zero-access encryption, and no training on user data address key regulatory concerns. Not EU-incorporated but GDPR adequate.

●Omnifact (3/5): Privacy Filter approach is conceptually strong for regulated industries. German jurisdiction and EU hosting are positive. Lack of certifications currently limits enterprise procurement in regulated sectors.

Certifications at a Glance

Certification	Lumo (Proton)	Omnifact
ISO 27001	Yes	No
SOC 2	Yes	No

Overall Verdict

Lumo (Proton) has a clear trust advantage, scoring 23/25 compared to Omnifact's 19/25. Lumo (Proton) particularly excels in certifications, regulatory fit.

Frequently Asked Questions

Which is better for EU compliance, Omnifact or Lumo (Proton)?

Omnifact has a TrustKit score of 19/25 while Lumo (Proton) scores 23/25. Lumo (Proton) currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Omnifact and Lumo (Proton) compare on data residency?

Omnifact scores 5/5 for data residency (EU data hosting with self-hosted deployment option. Privacy Filter prevents sensitive data from reaching external AI providers. German company with EU-only infrastructure.), while Lumo (Proton) scores 5/5 (Data hosted in Proton's own data centres in Germany and Norway. Zero-access encryption means even Proton cannot read conversation content. No US infrastructure dependency.).

Are Omnifact and Lumo (Proton) GDPR compliant?

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

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