CLUE#ZO vs whistly

Side-by-side facts for CLUE#ZO and whistly, sourced from vendor-published materials. Both platforms market themselves for EU Directive 2019/1937 compliance.

At a glance

CLUE#ZO

German digital whistleblowing system from CAS Concepts and Solutions AG, delivered on SAP Business Technology Platform with integration to SAP S/4HANA and chatbot-guided report intake.

Headquarters: Hamburg, Germany
Pricing: Basic EUR 99/month (12 reports/year, 3 users); Standard EUR 299/month (50 reports/year, 6 users); Enterprise EUR 1,499/month (unlimited reports, 15 users). Prices are ex-VAT.
EU data hosting: EU (named data centre)
EU member states referenced: 1 of 27
Certifications: None published
AI on report content: Processes report content with AI / translation

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whistly

Berlin-based whistleblowing channel from whistly digital GmbH, positioned for German HinSchG and supply-chain (LkSG) compliance, from EUR 59 per month regardless of headcount.

Headquarters: Berlin, Germany
Pricing: Two published packages: Essential EUR 59/month and Pro EUR 99/month, charged regardless of employee count.
EU data hosting: EU (named data centre)
EU member states referenced: 1 of 27
Certifications: None published
AI on report content: No AI processing of report content

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Full facts, side by side

Full facts, side by side: CLUE#ZO and whistly
Attribute	CLUE#ZO	whistly
Headquarters	Hamburg, Germany	Berlin, Germany
Ownership	Private, CAS Concepts and Solutions AG (Hamburg, Commercial Register HRB 69127)	Private, whistly digital GmbH (District Court of Charlottenburg, Berlin, HRB 249593 B)
Customers (vendor claim)	Undisclosed	100+ to 500+ organizations (vendor claims vary by page: 100+ on the LkSG page, over 200 on the about page, 500+ on the vendor blog)
Pricing	Basic EUR 99/month (12 reports/year, 3 users); Standard EUR 299/month (50 reports/year, 6 users); Enterprise EUR 1,499/month (unlimited reports, 15 users). Prices are ex-VAT.	Two published packages: Essential EUR 59/month and Pro EUR 99/month, charged regardless of employee count.
Pricing model	Tiered (per employee)	Flat published rate
Procurement model	Mixed	Self-serve sign-up
Free trial	No	✓ Yes
EU data hosting	EU (named data centre) European data centres (vendor states ISO 27001 certified data centres); built on SAP Business Technology Platform	EU (named data centre) ISO 27001 certified servers in Germany (hosting-provider certification, provider not named; vendor-stated)
EU member states referenced	1 of 27	1 of 27
EU reporting languages	Undisclosed	Partial
Total reporting languages	Undisclosed	5
AI on report content	Processes report content with AI / translation	No AI processing of report content
Certifications	None published	None published
National laws referenced	EU Directive 2019/1937 Germany (Hinweisgeberschutzgesetz, HinSchG)	EU Directive 2019/1937 Germany (Hinweisgeberschutzgesetz, HinSchG) Germany (Lieferkettensorgfaltspflichtengesetz, LkSG)
Anonymous reporting	✓	✓
Case management	✓	✓
Multi-channel intake	—	—
Public API	—	—
GDPR (vendor claim)	✓	✓
EU Directive 2019/1937 (vendor claim)	✓	✓
Last verified	19 July 2026	19 July 2026

How CLUE#ZO and whistly differ

Both CLUE#ZO and whistly can host whistleblower report data inside the EU. CLUE#ZO references 1 of the 27 EU member states and whistly references 1. Neither lists an ISO 27001 certification. whistly offers self-serve sign-up, whereas CLUE#ZO routes buyers through a demo or sales process. CLUE#ZO processes report content with AI, while whistly does not. Both market themselves for EU Directive 2019/1937 compliance, so the better fit depends on your priorities around data residency, certification, pricing transparency, and use of AI.

CLUE#ZO vs whistly: common questions

Does CLUE#ZO or whistly host whistleblower data in the EU?

Both CLUE#ZO and whistly can host whistleblower report data inside the EU.

How many EU member states do CLUE#ZO and whistly cover?

CLUE#ZO references 1 of the 27 EU member states and whistly references 1.

Is CLUE#ZO or whistly ISO 27001 certified?

Neither lists an ISO 27001 certification.

How do CLUE#ZO and whistly pricing and sign-up compare?

CLUE#ZO is priced at Basic EUR 99/month (12 reports/year, 3 users); Standard EUR 299/month (50 reports/year, 6 users); Enterprise EUR 1,499/month (unlimited reports, 15 users). Prices are ex-VAT.. whistly is priced at Two published packages: Essential EUR 59/month and Pro EUR 99/month, charged regardless of employee count.. whistly offers self-serve sign-up, whereas CLUE#ZO routes buyers through a demo or sales process.

Do CLUE#ZO or whistly use AI on whistleblower reports?

CLUE#ZO processes report content with AI, while whistly does not.

Another option in this directory

CLUE#ZO and whistly are two of the platforms indexed here. If your shortlist is still open, one more worth comparing — with a different set of tradeoffs:

EthicsPortal

Whistleblower reporting portal hosted on Hetzner in Germany. Flat €60/month plan.

Headquarters: Poland
Pricing: €60/month, or €41.67/month billed annually (€500/year)
EU data hosting: EU (named data centre)
EU member states referenced: All 27
Certifications: ISO 27001
AI on report content: No AI processing of report content

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Compare this tool against other platforms in the directory.

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