Heidi Evidence and iatroX overlap in source-linked clinical information, but the choice depends on your account, working context and learning need. A useful comparison starts with the features you can actually access in your region.
This comparison was refreshed on 10 November 2026. It uses provider documentation, rather than claiming an independent head-to-head accuracy or speed test. The question is which workflow helps you complete a defined reference or educational task.
Check Heidi's regional access first
Heidi's UK and EU guidance distinguishes out-of-session Evidence from Evidence within an active patient consultation. It also retains a specific exclusion for NHS UK email accounts. Confirm your own eligibility before using an international demonstration as a guide to what your account includes.
The same regional page describes Evidence's informational, research and educational scope in the UK/EU. This matters when comparing standalone evidence discovery with a patient-context-aware assistant available elsewhere. An account upgrade and a change to guideline preferences do not by themselves resolve a regional feature restriction.
For account and mobile troubleshooting, see why Heidi Evidence may be missing.
Compare by the task
| Task | Heidi Evidence | iatroX |
|---|---|---|
| Find a cited answer | Evidence search, subject to account and region | Ask for UK-focused source-linked clinical questions |
| Choose sources | Source Control, partner content and Library where available | Inspect the sources returned for the UK clinical question |
| Use a consultation's context | Regional and platform restrictions apply | Assess the published scope of the selected iatroX feature |
| Prepare for an examination | Evidence reading can support learning | Supported question banks, question-linked Tutor and study tools |
| Keep a learning record | Published CPD/CME tracking features | Focused learning, personalised reflection and exportable CPD record |
The table identifies product roles. It does not establish equivalent entitlements, accreditation or clinical performance.
Understand what Source Control means now
Heidi's getting-started guide, dated 28 September 2026, describes source-type selection, a personal Library and managed team sources. It lists BMJ Best Practice among UK partner sources. It explicitly says there is no domain-exclusion feature, despite older regional wording referring to blacklisting.
If source control is a purchasing reason, ask to see the current controls on the intended plan and platform. Selecting a source collection, uploading a protocol and excluding a domain are different operations. A comparison should state which operation the clinician actually needs.
For iatroX, use the published methodology and the citations in the actual answer to assess its source-linked UK reference workflow. A national focus describes product fit; it is not proof that every response is correct or that another system cannot retrieve relevant UK material.
Reference reading and question-linked learning
A cited answer can resolve a question while leaving the learner unable to apply the distinction later. That is the point at which the educational comparison becomes more useful than another discussion of answer length.
iatroX's Tutor works with supported question practice. The relevant assessment is whether attempting a question and discussing its reasoning helps the learner explain a previously confusing choice. Check the exam directory for the pathway you need and pricing for current learning access.
Heidi also describes professional-learning features. Treat those as real capabilities to assess on their own terms. The presence of a CPD log alone is not an exclusive product distinction; the activity that produces the learning and the user's control over the final record matter too.
A worked comparison exercise
Consider a fictional GP trainee who needs to understand a UK guideline distinction after clinic. First, use a generic teaching question to find the relevant source. Check whether the cited passage supports the answer and whether a local pathway adds a separate requirement.
Next, change one feature in the fictional scenario. Ask the learner to explain why the same reference section does or does not apply. If that remains difficult, choose a targeted practice question and discuss the reasoning. The reference and learning stages can involve different tools.
No product test is claimed by this example. It is a repeatable way for a prospective user to compare the experience against a real learning task rather than a brand's general promise.
Compare the complete learning record
iatroX CPD connects focused questions, Tutor-supported review, reflection and a confirmed record. The learner personalises the reflection; PDF and linked FourteenFish export support keeping the evidence. Check current introductory-session and all-access terms on the product page.
When comparing with Heidi's tracking, inspect the evidence you would actually retain: the activity, what was learned and what you intend to change. Separate a personal learning record from formally accredited credit and verify the requirements of the scheme you use.
Frequently asked questions
Does paying for Heidi enable in-session Evidence in the UK?
Its regional guidance says the restriction applies across plan tiers. Confirm the specific feature before upgrading.
Can Heidi Source Control block a domain?
The newer getting-started guide says there is no exclude-domain feature. Assess source and collection selection separately.
Which should I choose for exam revision?
Start with the supported examination, practice format and feedback you need. iatroX's question-linked learning is relevant when the gap persists after reading an explanation.