Cardiologs Holter
Cloud-based, AI-assisted ECG analysis platform for qualified healthcare professionals. It reviews ambulatory Holter recordings from any compatible device, detects more than 20 event types including major arrhythmias, and turns them into detailed, actionable diagnostic reports.
What is Cardiologs Holter?
Cardiologs Holter is the cloud-hosted, AI-assisted ECG analysis platform that Philips sells to hospitals and cardiology practices. It is deliberately recorder-independent: it accepts data recorded in compatible formats from essentially any device used for arrhythmia diagnostics, whether a classic Holter, an event recorder, a 12-lead ambulatory ECG device or Philips' own ePatch wearable, and it can also be electronically interfaced with other computer-based ECG systems such as an ECG management system.
Once a recording is loaded, the platform handles ECG signal processing and analysis, QRS and ventricular ectopic beat detection, QRS feature extraction, interval measurement, heart rate measurement and rhythm analysis. Philips describes the algorithm as clinically proven, says it detects more than 20 types of events including the main arrhythmias, and turns the trace into an actionable report meant to speed up clinical decision-making.
The commercial argument is time. Philips claims a 42% reduction in Holter analysis time, referenced to Fiorina et al. in EP Europace (2020). Two French case studies support it: the Institut Cardiovasculaire Paris Sud reports quadrupling its diagnostic activity and cutting report turnaround to a single day, while the GHICL group paired Cardiologs with Philips IntelliBridge to gain interpretation speed and automate the flow of data into its electronic health record. Philips also fields a network of expert cardiologists and its own ECG technicians, so a department can hand over report production instead of absorbing it.
The regulatory frame is stated plainly. The platform is a Class IIa medical device in Europe (CE 2797) under EU MDR 2017/745 and a Class II device in the United States under 510(k) clearance. Intended use covers adult and paediatric populations, except in the United States and Australia where it is limited to patients over 18. Access is reserved to healthcare professionals legally allowed to operate such a device, and Philips insists the interpretation results are advisory only and must never be the sole means of diagnosis. The platform is excluded from life-supporting systems and from ECG monitors and alarm devices. The technology reached Philips through the November 2021 acquisition of Cardiologs, a Paris company founded in 2014 with around 70 staff.
What it does
- Analyse ambulatory Holter ECG recordings with a clinically proven AI algorithm
- Detect more than 20 types of cardiac events, including the main arrhythmias
- Turn a raw trace into a detailed, actionable ECG analysis report
- Process the ECG signal: QRS detection, ventricular ectopic beat detection and QRS feature extraction
- Measure intervals and heart rate, and run rhythm analysis across the recording
- Ingest data in compatible formats from Holters, event recorders and 12-lead ambulatory ECG devices
- Push results into the electronic health record through automated IntelliBridge integration
When to use Cardiologs Holter / When not to
A quick filter to help you decide if Cardiologs Holter is the right fit.
When to use Cardiologs Holter
- Cardiac electrophysiologists and cardiologists who read high volumes of ambulatory Holter recordings
- Hospital cardiology departments trying to shorten report turnaround and absorb rising Holter volumes
- Clinical teams that want ECG results pushed automatically into their electronic health record
- Services running a mixed fleet of recorders: Holters, event recorders, 12-lead ambulatory devices or the Philips ePatch
- Paediatric as well as adult arrhythmia services in Europe, where the platform is cleared for both populations
When not to use Cardiologs Holter
- Anyone who is not a healthcare professional legally allowed to operate a CE Class IIa or FDA Class II medical device, whose access is expressly prohibited
- Teams looking for real-time bedside monitoring or alarms, which the intended use explicitly rules out
- Life-supporting or life-sustaining systems, also excluded by the intended use
- Buyers who need published pricing or a self-service sign-up, since every route starts with a sales demo request
- Organisations that require a published DPA, a subprocessor list or a documented hosting location before they will sign
How to use Cardiologs Holter
A typical end-to-end flow, from setup to results.
- Confirm you are a healthcare professional legally allowed to use a CE Class IIa or FDA Class II medical device, which the site asks you to declare before showing its content
- Open the French Cardiologs page and use the demo request form
- Fill in country, title, name, email, institution, profession, speciality, role, department, address and phone, with a preferred call-back slot
- Wait for Philips, or a partner or distributor acting on its behalf, to call back and arrange the demonstration
- Agree a service arrangement: the ePatch offer that bundles the platform is sold in three service formulas
- Record the ECG with a Holter, an event recorder, a 12-lead ambulatory device or a Philips ePatch wearable
- Upload the recording to the cloud platform in a compatible format
- Let the algorithm process the signal and detect events across the trace
- Review and validate the generated report, or hand report production to Philips ECG technicians
- Escalate complex cases to the Philips expert cardiologist committee, and read the instructions for use before any clinical use
Pros & Cons
Pros
- A quantified, published time saving: 42% less Holter analysis time, referenced to EP Europace (2020)
- Regulatory status stated openly: Class IIa CE 2797 under EU MDR 2017/745, Class II in the United States under 510(k)
- Named hospital outcomes rather than vague claims, including a one-day report turnaround at ICPS
- Backed by a database of more than 20 million ECG recordings and a body of clinical publications
- Works with the recorders a department already owns instead of forcing a hardware change
- Covers paediatric as well as adult populations in Europe
- Reporting workload can be outsourced to Philips ECG technicians and expert cardiologists
Cons
- No public pricing at all: every path runs through a sales demo request
- Nothing published about where the ECG data is hosted, or in which jurisdiction
- No DPA and no subprocessor list available anywhere on the site
- No stated position on whether customer data is used to train the models, and no opt-out
- No API documentation, even though the platform advertises electronic interfacing with other systems
- The French page is a lead-generation campaign; the detailed product pages exist only on other Philips country sites
- Case-study results are explicitly described as site-specific and may not transfer to another hospital
Pricing & Plans
Philips publishes no price for Cardiologs Holter. There is no permanent free plan and no free trial advertised: the only route offered is a demo request handled by Philips or by an authorised partner or distributor. The ePatch offer that bundles the platform mentions three service formulas, but neither their names nor their amounts are disclosed. Pricing should therefore be treated as quotation-based, and no entry-level figure or currency can be quoted from the site.
- Three service formulas are mentioned inside the Philips ePatch offer
- with no names
- tiers
- currencies or amounts disclosed
Data, GDPR & hosting
A consolidated view of how Cardiologs Holter handles your data.
GDPR overview
GDPR implementation is concrete but group-wide rather than specific to the Holter platform. The French Cardiologs page names Regulation (EU) 2016/679 and the amended French law 78-17, and lists rights of access, rectification, erasure, objection, restriction and portability, exercised at privacy@philips.com against proof of identity, with the option to complain to the CNIL and to leave post-mortem instructions. The privacy notice, last modified in October 2025, names Philips International B.V. as controller and as the representative for the EEA, the United Kingdom and Switzerland, mentions a data protection officer reachable through a privacy form, and frames international transfers with Binding Corporate Rules inside the group and Standard Contractual Clauses outside it. No DPA, subprocessor list or product-specific privacy notice for Cardiologs Holter is published.
Who owns the data?
Unless a product-specific notice says otherwise, Philips International B.V. in Amsterdam is the controller for personal data collected through Philips channels. The demo form on the French Cardiologs page is a separate case: those details are registered by Philips France Commercial in Suresnes. Philips states that Cardiologs promotional content, including data, information, trademarks and logos, is its sole property, and the website's own content is copyrighted by Koninklijke Philips N.V. Personal data may be disclosed to public authorities and legal advisers for legal reasons. No clinical service contract for the Holter platform is published on philips.fr, so ownership of the ECG recordings and of the reports derived from them is not settled publicly.
Reuse rights
Nothing on philips.fr describes what an end user may do with the ECG recordings or the reports the platform produces; that would sit in the clinical service contract, which is not public. The site terms do govern material posted on the website itself: any user content submitted there grants Philips a worldwide, non-exclusive, royalty-free, irrevocable, transferable and sub-licensable licence to use, reproduce, adapt, distribute and publish it. Cardiologs promotional material may not be reproduced, in part or in full. Software downloaded from the site is licensed to end users only, and any copying or redistribution is strictly forbidden. Philips also requires that the product be used exclusively in line with its instructions for use.
Data retention & training
Hosting summary
Philips publishes nothing about where Cardiologs Holter processes or stores ECG data. The platform is described only as available in the cloud, with no provider, region or jurisdiction named. What the site does state is group-wide: the Philips privacy notice, last modified in October 2025, says personal data may be transferred worldwide, with intra-group transfers governed by Binding Corporate Rules, the Philips Privacy Rules, and transfers to trusted third parties in countries without an adequacy decision covered by Standard Contractual Clauses. The controller, Philips International B.V., is established in Amsterdam, Netherlands. One concrete location claim does appear on the French Cardiologs page, but it concerns the demo form alone: those marketing details are stored outside the European Union for 24 months, which cannot be read as a statement about patient recordings. The philips.fr domain itself resolves to a Cloudflare anycast node, which describes website infrastructure and says nothing about the clinical platform. Any data-residency requirement will have to be secured contractually.
Things to keep in mind
Risks and trade-offs to weigh before adopting Cardiologs Holter.
- Over-trust in the algorithm: Philips states the interpretation results must never be the sole means of diagnosis
- Reports are advisory only and have to be read alongside ECG patterns, patient background, clinical history and symptoms
- Deskilling risk if analysis and overread are routinely delegated to the algorithm or to outsourced ECG technicians
- The platform is barred from life-supporting or life-sustaining systems and from ECG monitors and alarm devices
- Health data is sensitive, yet neither the hosting country nor the subprocessors are documented on the French site
- Nothing is published about whether customer recordings feed model training, and no opt-out is offered
- Demo-form details are kept outside the European Union for 24 months, and the quoted hospital gains are explicitly site-specific
Setup & Integrations
Technical difficulty
Day-to-day use is light: the platform runs in the cloud and philips.fr mentions no local installation. The friction sits upstream and around it. You must qualify as an authorised healthcare professional, go through a sales demo before gaining access, and have a recorder producing a compatible format, though ready-to-use ePatch kits remove consumables and battery handling. Connecting results to the electronic health record is a project in its own right, delivered through Philips IntelliBridge, as is interfacing with an existing ECG system. Reading the instructions for use is mandatory before any clinical use.
Deployment
Integrations
Behind Cardiologs Holter
Fundraising
Social
Resources
All the official URLs gathered for verification and reference.
Frequently asked questions
What exactly is Cardiologs Holter?
Who is allowed to use it?
Which patients does it cover?
Does it work with my existing recorders?
How much time does it actually save?
What is its regulatory status?
Can the reports be used as the sole basis for a diagnosis?
Does it connect to the electronic health record?
What does it cost?
Who is behind the product?
Should you pick Cardiologs Holter?
Cardiologs Holter is not a general-purpose AI tool and should not be judged like one. It is a regulated clinical instrument, a Class IIa medical device in Europe and a Class II device in the United States, sold to cardiology departments and read only by professionals licensed to operate such a device. Within that frame, it is unusually well documented. The central claim, a 42% cut in Holter analysis time, carries a published reference, and two named French hospitals describe what changed for them: quadrupled diagnostic activity and one-day report turnaround at ICPS, faster interpretation and automated EHR data flow at GHICL. The algorithm's scope is spelled out event by event, and so are its limits: advisory results only, never the sole means of diagnosis, and no use in life-support systems, monitors or alarm devices. Philips also states its own restrictions rather than burying them, including the over-18 patient limit in the United States and Australia.
What the French pages do not give is anything a buyer's technical and legal reviewers will need. There is no price, no plan, no free trial, no API documentation, no DPA, no subprocessor list, no hosting country and no position on whether customer recordings feed model training. The only public statement about data location concerns the marketing demo form, not patient recordings. The dedicated French page is a campaign built to capture leads, while the fuller product pages live on other Philips country sites.
The verdict is therefore split. Clinically, the product is credible, mature and backed by more than 20 million ECG recordings and a real publication record. Commercially and contractually, it is opaque by design: everything meaningful is settled in a demo and a contract, not on the website.
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