Preventive health check services in 2026
By AppDuo Editorial Team · Fact-checked
Preventive health-check services sell testing to people who feel well: a blood panel on a schedule, a scan with a clinician, or an AI chat to talk symptoms through. This guide covers four services with AppDuo research profiles. Function Health and Superpower are US blood-testing memberships billed yearly; Neko Health is a one-hour in-person scan in Sweden, the UK and the US, paid per visit; Doctronic offers a free AI health chat and paid video visits. According to the research records, none of the four is offered in Vietnam: Function and Superpower are aimed at US residents, Neko's site lists only those three markets, and Doctronic's terms require US residence.
Two cautions apply to all of them. First, none is a diagnosis: Function and Superpower say they do not replace medical advice, Neko says its app does not diagnose, and Doctronic says its chat is an AI model, not a doctor. If you have symptoms, see a clinician. Second, the benefit of broad testing in healthy people is not established in these records: Neko's published figures have no control group, and experts quoted by UnHerd and The Week warn of false positives and overdiagnosis. Superpower faces a false-advertising suit from Function, and Utah's medical board has objected to Doctronic's AI prescription-renewal pilot; neither is resolved, and both are covered under each entry. Prices are each vendor's published price for an individual, with the market named and never converted. This guide compares services; it is not medical advice.
Broad blood panel, tested twice a year7.3/101. Function Health
Function Health suits US residents who want a broad blood panel repeated during the year without going through insurance. The membership lists 160+ lab tests, run twice a year plus on demand, with clinician review of every result, an action plan, a private AI chat, wearable connections and uploads of past records. Blood is drawn at 2,000+ Quest sites or at home or work, and the FAQ says first results typically arrive within 48 hours. The pricing page lists $365/year, charged once annually and HSA/FSA eligible; it was cut from $499 in November 2025, when the company also said it had acquired Ezra to offer MRI and CT. MRI, CT and extra tests cost extra and are not priced on the page, and pricing may differ by region. Refund terms are strict: a full refund only within 48 hours of purchase and before any specimen is collected; after that the membership, renewals included, is generally nonrefundable, and it renews at the then-current price. Ratings are high (4.93/5 from 25,158 ratings on the US App Store, 4.8/5 from 349 on Google Play, 4.5/5 from 3,132 Trustpilot reviews), though Trustpilot reviewers also report trouble reaching a live person and unclear explanations of out-of-range results. It covers 48 states, not Rhode Island, Hawai'i or Puerto Rico. Function's terms say it does not provide medical advice or diagnosis, and AppDuo's review notes the general risk that broad screening of people without symptoms produces false positives. Function is also the plaintiff in a false-advertising suit against Superpower that has no ruling yet.
Read our full Function Health review
Lower-cost yearly blood test with an AI assistant7.1/102. Superpower
Superpower is the lower-cost yearly option for US residents. The official site lists $199/year, billed once a year and HSA/FSA eligible, for annual blood testing with what it calls 100+ biomarkers, a personal plan, the Kin AI assistant and a care team; pricing may differ in New York and New Jersey. Blood is drawn at 2,000+ partner labs or at home for an extra fee (one Trustpilot reviewer cites $150), and the site says results arrive in 10 days or less. The app shows a biological age and 17 health scores, accepts uploads of past labs and connects Oura, Whoop and Apple Health; since iOS version 1.3.0 the AI can also message members in iMessage. Gut, toxin and Galleri cancer tests are sold separately. The pricing page states no refund policy, only that you can cancel anytime and keep access until the paid year ends. The biomarker count is disputed: in January 2026 Function Health, a direct rival, sued in federal court in California, alleging that the membership includes about 55 directly measured values with the rest calculated, and that the "24/7" care team is staffed by dietitians or health coaches rather than physicians, among other claims. These are a competitor's allegations with no ruling; as of 10 March 2026 Superpower had not filed an answer. Trustpilot also withholds Superpower's rating, saying the company was "displaying Trustpilot content in a misleading way", with no further detail. On privacy, the policy says Superpower shares data with Meta, Google, Microsoft and LinkedIn for advertising, may sell de-identified data and may not be subject to HIPAA, while health data sent to its AI features is not used for model training. The iPhone app is rated 4.89/5 from 1,761 ratings on the US App Store; no Android app was found.
Read our full Superpower review
In-person body scan with a clinician, paid per visit6.8/103. Neko Health
Neko Health is the in-person option. A visit of about an hour combines non-invasive, radiation-free skin and body imaging with mole mapping, heart and circulation measurements such as blood pressure and ECG, blood tests (50+ biomarkers per the US page) and a results consultation with a clinician in the same session. It is paid per visit with no subscription: $499 in the US, £299 in the UK and 2,750 kr in Sweden. The UK and Sweden pages say follow-up is included; the US page says certain follow-up care is included if the clinician recommends it. No published refund terms were found. Clinics are in only a few cities across Sweden, the UK and the US; Neko opened in New York in September 2026 and has announced a Miami-area opening in December. The free iPhone app (4.8/5 from 12 ratings on the UK App Store, English and Swedish only) stores results, tracks changes between scans and syncs Apple Health. Neko says the app is not a medical device and does not diagnose, and its AI Health Chat must be switched on and is informational only. The open question is the benefit. Per The Week, Neko scanned 2,707 people in its first Stockholm year and 14% needed further care or monitoring; the company adds that 1% received "potentially life-saving" intervention, and itself states this is not a controlled study. Writing in UnHerd, Margaret McCartney and Deborah Cohen argue the figures cannot show what would have happened without a scan, and Swedish family doctor Minna Johansson warns that buyers may be harmed through overdiagnosis and overtreatment. These are critics' views, not regulator findings; Neko responds that the NHS offers only "the most basic options". Under the UK privacy notice, health data is kept for eight years and each AI or product-development use needs its own consent.
Read our full Neko Health review
Free AI health chat, with paid video visits6.8/104. Doctronic
Doctronic does not sell tests: it pairs an AI health chat with video visits with US physicians, and is included for people who want to talk symptoms through before deciding on a check or a visit. The AI chat is free with no subscription, and the homepage says questions are unlimited. A video visit with a physician licensed in the patient's state costs $39, prescription renewals are listed "as low as $0", and insurance, FSA and HSA are accepted. An unsatisfactory telehealth visit can be refunded in full on request unless insurance paid. The terms require users to be 18+ and live in the US or its territories, the interface is English-only, and it is not meant for emergencies or serious pediatric concerns. Doctronic itself says the chat is an AI model, not a licensed doctor. Independent evidence is thin: per TelecareAware, the supporting preprint was written by company equity holders, and per MedCity News, security firm Mindgard manipulated the public chatbot into endorsing triple the standard OxyContin dose; Doctronic says its Utah renewal system is a different instance. In April 2026 Utah's Medical Licensing Board, an advisory body, asked for the state's AI prescription-renewal pilot to be suspended; state officials replied that every phase-one renewal is physician-approved and the AI may not handle controlled substances, and the state plans to continue the pilot. Doctronic told Fierce Healthcare it has defined safeguards and physician oversight of every prescription in the first phase. Both are allegations, not findings by an authority. On privacy, the policy allows de-identified data, chats included, to train AI models and sends tracking data to ad partners, although the Google Play listing says data is never used to train AI. Ratings are 4.5/5 from 834 Trustpilot reviews; the US app-store samples are small, at 4.4/5 from 30 App Store ratings and 4.1/5 from 49 on Google Play.
Read our full Doctronic review
Preventive health check services at a glance: data table
Data (JSON)Prices are per month in the currency the vendor lists, from the plans checked on the date shown. Download the full data as JSON.
| App | Score | Free plan | Cheapest paid plan | User rating | Platforms | Checked |
|---|---|---|---|---|---|---|
| Function Health | 7.3 | No | $30.42/userMembership | 4.9/5App Store (US) | iOS, Android, Web | Nov 10, 2026 |
| Superpower | 7.1 | No | $16.58Membership | 4.9/5App Store (United States) | Web, iOS | Nov 11, 2026 |
| Neko Health | 6.8 | No | — | 4.8/5App Store (UK) | iOS | Nov 11, 2026 |
| Doctronic | 6.8 | Yes | — | 4.5/5Trustpilot | Web, iOS, Android | Nov 11, 2026 |
How we chose
Picks come from AppDuo's published research profiles, limited to services that sell consumer preventive testing or a health check, plus one AI health chat. They were grouped by what you actually get (a recurring blood panel, an in-person scan, an AI chat) and compared on what a check includes, how results are delivered and reviewed by clinicians, which countries are served, the published price for an individual with its billing unit (per year or per visit), refund terms, data practices (AI training, sharing for advertising), app-store and Trustpilot ratings, and documented lawsuits, regulator objections and expert criticism, each with its status. Prices come from official pages for the named market and are never converted; Neko charges per visit while Function and Superpower charge per year, so the figures are not directly comparable. The list rests on that research rather than hands-on use or clinical evaluation, and no profile cites a controlled study showing these services improve health outcomes for healthy people. Each review keeps its own source-check dates.
Frequently asked questions
Can these services replace a check-up with my doctor?
No. Function's terms say it does not provide medical advice, diagnosis or treatment, and Superpower says it is not a substitute for medical advice. Neko says its app is not a medical device and does not diagnose, and its AI Health Chat is informational only. Doctronic says its chat is an AI model, not a licensed doctor, and it is not meant for emergencies. Treat the results as material to discuss with a clinician, and seek care directly if you have symptoms.
Do broad blood panels and body scans help healthy people?
The records do not settle it. Neko publishes first-year Stockholm figures (14% of those scanned needed further care or monitoring) but states they do not come from a controlled study. Experts quoted by UnHerd and The Week argue that scanning healthy people risks false positives, overdiagnosis and overtreatment; Neko responds that public healthcare offers only basic options. AppDuo's Function review flags the same false-positive risk for broad screening of people without symptoms. No profile cites a controlled study showing these services improve health outcomes.
How do Function Health and Superpower differ?
Both are US memberships billed yearly. Function lists $365/year for 160+ tests run twice a year, with clinician review of every result and first results typically within 48 hours. Superpower lists $199/year for annual testing with what it calls 100+ biomarkers, results within 10 days and an extra fee for at-home collection. Function refunds in full only within 48 hours and before a sample is taken; Superpower's pricing page states no refund policy. Superpower's biomarker count is challenged in a lawsuit brought by Function itself, with no ruling yet, so read those claims as a competitor's allegations.
Can I use these services from Vietnam?
Not according to the research records. Function covers 48 US states (it also has a separate UK website), Superpower mentions only US testing locations, Neko's site lists Sweden, the UK and the US, and Doctronic requires US or US-territory residence. The records show no VND price for any of them.
What happens to my health data?
It varies. Superpower shares data with Meta, Google, Microsoft and LinkedIn for advertising, may sell de-identified data and says HIPAA may not apply to it, but does not use data sent to its AI for model training. Function says it does not sell your identity or use health or genetic data for advertising, but shares data with affiliates, service providers and lab partners, and HIPAA does not cover everything it processes. Neko follows UK GDPR in the UK, keeps health data for eight years and uses it for AI or product development only with separate consent. Doctronic's policy allows de-identified data, chats included, to be used to train AI.
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