What Ada Health actually does
Ada Health is a symptom-assessment app built by Ada Health GmbH, a company founded in 2011 and headquartered in Berlin. Rather than a general wellness app, it is a single-purpose tool: it asks a structured series of questions about a symptom and returns a list of possible explanations along with suggested next steps.
The core product
A user opens the app, describes a symptom, and answers a follow-up sequence of questions — when it started, where it is felt, what makes it better or worse, and any related symptoms. Ada's assessment engine, built with input from a team of physicians, then returns a ranked list of possible explanations written in plain language, along with a recommendation such as booking a GP appointment, visiting a pharmacy, or seeking urgent care. The consumer app is free on both iOS and Android, with no subscription tier or paywall on the core assessment flow.
What's new or notable
The bulk of Ada Health's business is not the free consumer app at all. The company licenses its underlying assessment technology to health systems, insurers, and other healthcare partners, who embed it into their own care-navigation or triage products — Ada's own materials describe an enterprise-grade version, Ada Assess, that is certified as a Class IIa medical device under the EU's Medical Device Regulation for that business-to-business use. The free consumer app is a narrower slice of that same underlying engine, built for individuals rather than institutional buyers, and does not carry that same medical device classification.
Who should use Ada Health
Great fit if…
- You want to organise symptoms before a doctor's visit — it turns a vague "I don't feel right" into a structured summary and a short list of possibilities to raise with a clinician.
- You want a free tool with no account or payment friction — there is no subscription tier for individuals, and the core assessment requires no payment details to try.
- You want something built with clinical input — the assessment engine was developed with a team of physicians rather than being a purely crowd-sourced or unvetted symptom list.
Skip it if…
- You want an actual diagnosis — Ada's own help centre states plainly that the app "cannot provide a diagnosis," so anyone expecting a medical conclusion rather than a list of possibilities will be disappointed.
- Your situation is urgent — a symptom checker that depends on typed answers is not built for emergencies; anyone with acute or worsening symptoms needs direct contact with emergency services or a clinician, not a questionnaire.
- You want the more advanced, institutional version — features and integrations that show up when Ada's technology is licensed into a specific hospital or insurer's app are not necessarily present in the standalone consumer download.
Pricing in detail
There is nothing to weigh here on price: the consumer app has one tier, and it is free.
| Plan | Price | What's included |
|---|---|---|
| Consumer app | Free | Symptom assessment questionnaire, ranked list of possible explanations, and suggested next steps (GP, pharmacist, urgent care), on iOS and Android |
Where it falls short
- No diagnosis, by design — Ada's own guidance is explicit that its output is a list of possibilities and next steps, not a medical conclusion, and it should never be read as a replacement for a qualified healthcare professional.
- Entirely dependent on self-reported input — the app cannot examine, test, or observe anything; its suggestions are only as good as the symptoms a user manages to describe accurately.
- The free app is a smaller slice of a bigger platform — because Ada's real business is licensing the assessment engine to institutions, some of the polish and integration that make Ada notable in healthcare circles (embedding into a specific health system's referral pathway, for instance) isn't something an individual downloading the consumer app experiences directly.
Privacy & data
Ada states that personal health information shared with the app is encrypted and confidential, and that user account details and health information are stored on separate servers within the EU, which limits what could be exposed in any single breach. The company holds ISO 27001 certification for information security and ISO 13485 for medical-device quality management, and says it complies with GDPR. On sharing, Ada's privacy policy states it does not share data with third parties for commercial purposes without explicit consent, and that any data used for research or public-health statistics is pseudonymized or anonymized first. Retention varies by purpose: data tied to an active account is kept while the account exists, and Ada says it can retain some data for up to seven years after deletion where needed to establish or defend a legal claim, or longer where medical-device post-market surveillance rules require it. Health data of this sensitivity deserves that level of scrutiny, and Ada's own policy pages are the place to check current specifics before relying on any of this.
How we checked this
This review is based on Ada's published pricing, security, and privacy pages (ada.com/pricing, ada.com/security, ada.com/privacy-policy) as reviewed on 4 September 2026, cross-checked against the company's own help-centre statements about what the assessment can and cannot do. We did not use the app to obtain a symptom assessment ourselves; the description of how it works is drawn from Ada's own documentation of the product, not hands-on testing of its clinical output. Anyone relying on this review for a current decision should check Ada's own site directly, since pricing structures, security certifications, and product tiers can change after this date.
What you get, what you give up
What you get
- Free for individuals, with no subscription tier at all
- Structured symptom questions built by a Berlin health-tech company since 2011
What you give up
- Ada itself says its assessment "cannot provide a diagnosis" and is not a replacement for a qualified healthcare practitioner — its output is a list of possibilities and suggested next steps, not a medical conclusion, and it should never be treated as one.
- It depends entirely on symptoms the user reports; it cannot examine, test or observe anything, so its suggestions are only as good as the information typed in.
- The consumer app is free, but Ada's business is largely built around licensing its assessment technology to health systems, insurers and other partners — the version an individual downloads is a narrower slice of what the underlying technology is used for elsewhere.