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Cybersecurity · head to head

DataGrail vs Didomi

DataGrail logo

DataGrail

Cybersecurity

Privacy platform that finds shadow data systems and automates data subject requests across them

From
On request
Rated
-
Full reviewWebsite
Didomi logo

Didomi

Legal

Google-certified and IAB TCF consent management across web, mobile and connected TV

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: DataGrail no pricing is published, and while benchmarking suggests it undercuts OneTrust for comparable scope, cost still scales with request volume and connected systems, which grow with the business.; Didomi pricing is based on monthly unique visitors and is not published, so a large publisher cannot estimate cost before entering a sales process, and traffic spikes translate directly into billing surprises.
  • They diverge on capability: DataGrail covers Live data discovery, Didomi covers Google CMP certification.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which DataGrail and Didomi actually diverge.

Attributes where DataGrail and Didomi differ
AttributeDataGrailDidomi
PlatformsWeb, APIWeb, iOS, Android, Connected TV, API
CategoryCybersecurityLegal

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in DataGrail

  • Live data discovery
  • Request automation
  • Audit trail
  • Consent management
  • Integration catalogue
  • Risk monitoring
  • Consumer request portal
  • Reporting

Only in Didomi

  • Google CMP certification
  • IAB TCF support
  • Connected TV and OTT
  • Mobile SDKs
  • Consent proof storage
  • Preference centre
  • Consent analytics
  • Global privacy regimes

What people use each for

The jobs each tool is most often brought in to do.

DataGrail

  • A consumer brand whose deletion requests keep missing data in marketing tools the privacy team did not know existednot Didomi
  • A company processing hundreds of CCPA requests a month where manual fulfilment has become a full-time jobnot Didomi
  • A privacy team leaving OneTrust because the platform tracked requests but staff still completed them by handnot Didomi
  • An organisation needing evidence for a regulator that deletion actually occurred in every system, not that a ticket was closednot Didomi

Didomi

  • A European publisher whose Google Ad Manager revenue is withheld without a Google-certified CMP integrated with Consent Modenot DataGrail
  • A broadcaster collecting consent on connected TV apps, where certified CMP options are very limitednot DataGrail
  • A multinational advertiser needing one consent signal honoured consistently across web, iOS and Android propertiesnot DataGrail
  • A group that must produce consent evidence to a data protection authority following a complaintnot DataGrail

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

DataGrail

  • No pricing is published, and while benchmarking suggests it undercuts OneTrust for comparable scope, cost still scales with request volume and connected systems, which grow with the business.
  • Automated fulfilment only works for systems with a supported connector, so homegrown applications and legacy databases still need manual handling, and those are usually where the awkward data lives.
  • Discovery works by observing integrations and traffic patterns, so genuinely isolated systems, offline data and files on employee machines remain invisible and outside the data map.
  • It is narrower than the enterprise privacy suites, lacking the assessment, third-party risk and wider GRC modules a large regulated organisation will also need, so it may be one of two platforms rather than the only one.
  • Deletion automation is irreversible and mistakes are unrecoverable, so teams need real confidence in identity verification before enabling it, and that caution often keeps deletion semi-manual for months after purchase.

Didomi

  • Pricing is based on monthly unique visitors and is not published, so a large publisher cannot estimate cost before entering a sales process, and traffic spikes translate directly into billing surprises.
  • Consent banners depress measurable traffic by design, and Didomi cannot prevent that, so publishers moving from a non-compliant banner should expect an immediate drop in tracked users and attributable conversions.
  • Certification is a moving target: Google and IAB update requirements periodically and each version change forces integration work on your side, not only on the vendor's.
  • Connected TV consent collection depends on the app platform and remote control interface, and implementations are considerably more involved than a web banner, often requiring per-platform development.
  • The wider privacy suite beyond consent is thinner than dedicated privacy platforms, so an organisation needing data subject rights automation and data mapping usually buys a second vendor anyway.

Pricing, plan by plan

DataGrail

On request
  • DataGrail Platform$undefined/year
    • Data discovery and mapping
    • Data subject request automation
    • Consent management

Didomi

On request
  • Didomi CMP$undefined/year
    • Google-certified CMP for web, mobile and CTV
    • IAB TCF registered
    • Consent proof storage and analytics

Which should you pick?

Choose DataGrail if

  • You need live data discovery.
  • You work on Web, API.
  • You also want request automation.
DataGrail review

Choose Didomi if

  • You need google cmp certification.
  • You work on Web, iOS, Android, Connected TV, API.
  • You also want iab tcf support.
Didomi review

Questions people ask

Is DataGrail or Didomi better?
Neither clearly leads. DataGrail starts at On request and Didomi at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, DataGrail or Didomi?
DataGrail starts at On request and Didomi at On request.
Does DataGrail or Didomi run on more platforms?
DataGrail runs on Web, API. Didomi runs on Web, iOS, Android, Connected TV, API.
What is DataGrail best used for?
DataGrail is most often used for a consumer brand whose deletion requests keep missing data in marketing tools the privacy team did not know existed, a company processing hundreds of ccpa requests a month where manual fulfilment has become a full-time job, a privacy team leaving onetrust because the platform tracked requests but staff still completed them by hand, an organisation needing evidence for a regulator that deletion actually occurred in every system, not that a ticket was closed. Of those, a consumer brand whose deletion requests keep missing data in marketing tools the privacy team did not know existed and a company processing hundreds of ccpa requests a month where manual fulfilment has become a full-time job are not what Didomi is typically brought in for.
What can DataGrail do that Didomi cannot?
DataGrail covers Live data discovery, Request automation, Audit trail, Consent management. Didomi covers Google CMP certification, IAB TCF support, Connected TV and OTT, Mobile SDKs.

Answered from the vendors’ own pages

DataGrail: How is DataGrail different from OneTrust?

OneTrust orchestrates the workflow; DataGrail focuses on connecting to systems and completing the request, and benchmark data suggests it prices materially below OneTrust for comparable scope.

Didomi: Is Didomi Google-certified?

Yes, for web, mobile and connected TV, and the certification has been renewed across multiple years.

DataGrail: Does it find systems we do not know about?

Yes. Continuous discovery of unsanctioned tools processing personal data is its main technical claim.

Didomi: Does it support IAB TCF?

Yes, it is a registered TCF CMP, currently supporting version 2.2 and later revisions.

DataGrail: What does it cost?

Not published. Pricing is quoted by request volume and connected systems, with multi-year commitments typically discounted.

Didomi: What does it cost?

Not published. Pricing is based on monthly unique visitors and quoted.

DataGrail: Does it cover consent as well as requests?

Yes, it includes consent management, though publishers needing certified advertising consent usually use a specialist CMP.

Didomi: Where is consent data stored?

Didomi is a French company and offers European storage, which matters for procurement teams weighing supervisory jurisdiction.

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