Who each option is best for, and where either supplier is deliberately narrower.
Vendor comparison
OneTrust vs DataGrail: capability comparison
A side-by-side comparison of OneTrust and DataGrail across RoPA, DPIA, DSAR, vendor risk, AI governance and evidence workflows - with Acompli shown as a focused, human-approved, evidence-traceable alternative to both for Ireland, UK and EU teams.
OneTrustDataGrailComparisonAcompli alternative
Which public claims, review signals, caveats and capability rows are evidenced.
How much work it takes to implement, maintain and export the privacy record.
The questions a privacy team should ask before switching or shortlisting.
On this page
Key takeaways
- OneTrust and DataGrail are compared here on public, evidence-framed capability coverage: OneTrust is evidenced for 19 of 20 tracked capabilities, DataGrail for 15.
- The clearest differences: OneTrust adds Breach/incident management, Policy/notice management, Training module, Spreadsheet import; DataGrail adds nothing OneTrust lacks.
- Acompli is the focused third option: connected RoPA, DPIA, DSAR, risk, vendor and AI-governance records, each human-approved and traceable to its source evidence, built around GDPR Article 30, the Irish DPC and the UK ICO.
- "Y" means publicly evidenced in the reviewed sources, "N" means not clearly evidenced here (not proof a vendor cannot provide it). Verify live scope, pricing and exports with each vendor.
Comparison workflow
From company profile to shortlist decision
01Short answerOneTrust vs DataGrail02At a glanceOneTrust vs DataGrail vs Acompli at a glance03Capability comparisonOneTrust vs DataGrail: capability by capability04Where each is strongerOneTrust vs DataGrail: the differences that matter05Shortlisting notesChoosing between OneTrust, DataGrail and Acompli06Ireland & UKOneTrust vs DataGrail for RoPA in Ireland and the UK
Market lanechecked
Best-fit buyerchecked
Public strengthschecked
Capability evidencechecked
Overlapchecked
Gapschecked
Exportschecked
Shortlist fitchecked
01Short answer
OneTrust vs DataGrail
OneTrust is positioned as: Enterprise privacy, trust, consent, third-party risk, AI governance and GRC suite. DataGrail is positioned as: Privacy automation, DSR automation, live data mapping, responsible data discovery, integrations, consent management and AI-enabled privacy operations.
For an Irish, UK or EU privacy team weighing OneTrust against DataGrail, Acompli is the focused alternative to both: it keeps RoPA, DPIA, DSAR, risk, vendor and AI-governance records connected and defensible, with every record human-approved and every Article 30 field traceable to the assessment that produced it.
Published by Acompli and last reviewed on 29 June 2026. Capability coverage below is evidence-framed from public sources for all three.
02At a glance
OneTrust vs DataGrail vs Acompli at a glance
| Decision question | OneTrust | DataGrail | Acompli |
|---|---|---|---|
| Best fit | Large enterprises that need a broad privacy automation and trust platform spanning privacy, consent, third-party risk, AI governance and related programmes | Mid-market and enterprise privacy teams that prioritize DSR automation, live data maps, responsible data discovery, integrations and privacy automation | DPO-led privacy teams that need connected records across core GDPR workflows without implementing a broad enterprise trust suite |
| Operating model | A broad enterprise privacy, trust, consent, third-party-risk and AI-governance suite for global programmes | Agentic privacy automation platform with Request Manager, Live Data Map, data discovery, consent management, assessments, risk register and integrations | Connected privacy governance records across RoPA, DPIA, DSAR, risk, vendors, data mapping and optional AI Act workflows |
| When to choose it | Choose OneTrust when enterprise-suite breadth, existing OneTrust investment, partner ecosystem or global programme scale is the primary requirement | Choose DataGrail when automated DSRs, system detection, data discovery and integration-led privacy operations are the primary buying criteria | Choose Acompli when the team wants a shorter path to reviewed RoPA, DPIA, DSAR, risk, vendor and AI records that can be exported and defended |
03Capability comparison
OneTrust vs DataGrail: capability by capability
Each capability is marked Y (publicly evidenced in the reviewed sources) or N (not clearly evidenced here, which is not proof the vendor cannot provide it). Acompli is shown in the final column.
| Capability | OneTrust | DataGrail | Acompli |
|---|---|---|---|
| DPIA/PIA assessments | Y | Y | Y |
| RoPA / Article 30 | Y | Y | Y |
| DSAR / privacy rights | Y | Y | Y |
| Data mapping | Y | Y | Y |
| Vendor risk | Y | Y | Y |
| Privacy risk | Y | Y | Y |
| AI governance | Y | Y | Y |
| Consent management | Y | Y | N |
| Cookie/tracker scanning | Y | Y | N |
| Breach/incident management | Y | N | N |
| Retention management | Y | Y | Y |
| Policy/notice management | Y | N | N |
| Training module | Y | N | N |
| Approval workflows | Y | Y | Y |
| Audit trail | Y | Y | Y |
| Role-based access control | Y | Y | Y |
| Multi-entity support | Y | Y | Y |
| Spreadsheet import | Y | N | Y |
| PDF/CSV/Excel export | Y | Y | Y |
| Public pricing | N | N | N |
04Where each is stronger
OneTrust vs DataGrail: the differences that matter
On the tracked capabilities, OneTrust and DataGrail overlap heavily; the decision usually turns on the handful of capabilities only one of them evidences, plus depth, jurisdiction fit and price.
- Only OneTrust (not DataGrail) is evidenced for: Breach/incident management, Policy/notice management, Training module, Spreadsheet import.
- No capability is evidenced for DataGrail that OneTrust lacks in the tracked set.
- Acompli's wedge versus both: assessment-fed, evidence-traceable records (every Article 30 field links back to the approved assessment that produced it), human approval on every record, and a per-entity export the DPC or ICO can read without a platform login.
05Shortlisting notes
Choosing between OneTrust, DataGrail and Acompli
OneTrust and DataGrail should each be assessed on their published fit above. Acompli belongs on the shortlist where the priority is connected, defensible privacy records that stay current between audits, with a short route from draft to reviewed decision.
- Shortlist OneTrust or DataGrail where their broader suite, integrations or specific modules match the programme you want to run.
- Shortlist Acompli where the pain is stale RoPA fields, isolated DPIAs, disconnected DSAR files, supplier evidence drift, or risk registers that do not trace back to source evidence.
- Ask all three to demonstrate the same workflow end to end: a new processing activity, its assessment, the RoPA update, supplier evidence, the privacy risk and an exportable audit trail.
06Ireland & UK
OneTrust vs DataGrail for RoPA in Ireland and the UK
Records of processing activities are required under GDPR Article 30 - a controller record under Article 30(1) and a separate processor record under Article 30(2). In Ireland the Data Protection Commission (DPC) publishes Article 30 guidance; in the UK the ICO sets out what must be documented under UK GDPR.
Whichever of OneTrust or DataGrail you weigh, the question for an Irish or UK team is the depth of the Article 30 record and how defensibly it exports. Acompli's difference is provenance: every Article 30 field traces back to the approved assessment that produced it, and each legal entity gets a self-contained export the DPC or ICO can read without logging in.
- GDPR Article 30(1) and 30(2) - controller and processor records modelled separately, scoped by legal entity.
- DPC (Ireland) and ICO (UK) Article 30 documentation, with EU and UK GDPR distinguished on one register.
- Per-entity, self-contained export so each subsidiary can answer its own supervisory authority.
Acompli answers
Acompli: the focused alternative to both
Is Acompli an alternative to both OneTrust and DataGrail?
Acompli is a focused alternative to both OneTrust and DataGrail for teams that want connected, evidence-traceable RoPA, DPIA, DSAR, risk, vendor and AI-governance records rather than the broadest feature set. Every record is human-approved and every Article 30 field traces back to the approved assessment that produced it, built around GDPR Article 30, the Irish DPC and the UK ICO.
OneTrust vs DataGrail: which is better for Irish and UK GDPR?
For Irish and UK GDPR the deciding factors are Article 30(1)/(2) coverage, DPC and ICO fit, and a self-contained per-entity export - so the better choice between OneTrust and DataGrail is the one that documents both controller and processor records and exports them defensibly. Acompli is built specifically around that: EU and UK GDPR distinguished on one register, every field evidence-linked, and an export the DPC or ICO can read without a platform login.
What should I compare when choosing between OneTrust and DataGrail?
Compare OneTrust and DataGrail on one real workflow end to end: a new processing activity, its assessment, the resulting Article 30 RoPA update, the supplier evidence, the privacy risk entry and an exportable audit trail. Whether each value is evidenced (the capability table above) matters less than whether the records stay connected and defensible after approval - which is the test Acompli is designed to pass.
Acompli overlap
Related Acompli workflows
OneTrust vs Acompli
Compare OneTrust directly with Acompli across RoPA, DPIA, DSAR, risk and vendor records.
Open moduleDataGrail vs Acompli
Compare DataGrail directly with Acompli across RoPA, DPIA, DSAR, risk and vendor records.
Open moduleAssessments
Run DPIAs, LIAs, TIAs, processor reviews and AI Act assessments with templates, AI support and human approval.
Open moduleRoPA management
Maintain Article 30 records that stay linked to approved assessments, systems, suppliers and transfers.
Open moduleCompare OneTrust, DataGrail and Acompli against a real workflow.
Bring one RoPA, DPIA, DSAR, vendor, risk or AI-governance requirement and map which parts OneTrust covers, which DataGrail covers, and where Acompli keeps the evidence connected and defensible.