Last Updated: July 2026
Quick Answer
The best sinus infection symptom checker apps depend on what you need. Ada Health and Buoy Health are strong free general-purpose symptom checkers that can help you sort out congestion, facial pressure, and post-nasal drip. Momentary adds physician-reviewed guidance on whether your symptoms warrant telehealth, urgent care, or waiting it out. K Health pairs a free symptom checker with paid doctor visits if you want treatment in the same app. WebMD's checker works well if you already lean toward self-care and want quick reference information.
None of these tools can diagnose a sinus infection. Only a clinical exam, and sometimes imaging, can confirm sinusitis versus a cold or allergies. What these apps do well is help you figure out whether your symptoms are common cold, allergy-related, or serious enough to need medical attention soon.
Why Sinus Symptoms Are Hard to Tell Apart
A cold, allergies, and a sinus infection (sinusitis) can all cause congestion, facial pressure, and thick mucus. That overlap is exactly why so many people search for a symptom checker before booking an appointment.
A few patterns can help you narrow things down:
- Colds usually improve within 7 to 10 days.
- Allergies often come with itchy eyes and sneezing, and they can last for weeks during pollen season.
- Sinusitis symptoms that last more than 10 days, or that worsen after initially improving, are more likely bacterial and may need treatment.
A symptom checker app can walk you through these distinctions in a structured way, which is more reliable than guessing based on a single symptom.
Top Picks
| Category | Recommendation |
|---|---|
| Best Overall | Ada Health |
| Best Budget Option | Buoy Health (free) |
| Best for Symptom Guidance and Next Steps | Momentary |
| Best for Combining Checker With a Doctor Visit | K Health |
Comparison Table
| App | Best For | Pricing | Physician Involvement | Availability |
|---|---|---|---|---|
| Momentary | Deciding whether to self-treat, see telehealth, or go to urgent care | Free AI navigator; physician services priced separately | Physician-reviewed guidance | AI navigator nationwide (US); physician services currently California only |
| Ada Health | General symptom assessment with detailed follow-up questions | Free consumer app | Built on a clinician-developed medical knowledge base | Available in the US and internationally |
| Buoy Health | Free, fast triage-style symptom check | Free | Built by physicians; clinician-reviewed content | Available online and via app in the US |
| K Health | Symptom check plus option to see a doctor in the same app | Free symptom checker; paid plans for doctor visits and prescriptions | Licensed physicians available for paid visits | US only |
| WebMD Symptom Checker | Quick reference alongside a large condition library | Free | Editorial content is medically reviewed | Available in the US |
Why People Look for a Sinus Symptom Checker
Most people start searching once symptoms have lasted longer than expected, or once they're weighing whether to spend money on an urgent care visit versus waiting it out. Common triggers include:
- Facial pressure or pain that hasn't improved after a week
- Thick, discolored nasal discharge
- A cold that seems to be getting worse instead of better
- Uncertainty about whether allergies or a sinus infection is the cause
- Wanting to avoid an unnecessary urgent care copay
A good symptom checker should shorten that decision process, not replace the judgment of a clinician.
Ranked Recommendations
1. Ada Health
Why it's included: Ada asks detailed, structured follow-up questions and covers a wide range of conditions, which makes it useful for sorting out overlapping sinus, cold, and allergy symptoms.
Best for: People who want a thorough, question-by-question assessment before deciding on next steps.
Strengths:
- Free to use, with no cost for the core symptom assessment
- Detailed follow-up questioning designed to narrow down possible causes
- Exportable assessment report that can be shared with a doctor
Limitations:
- Does not connect users to a physician or telehealth visit directly
- Cannot confirm a diagnosis; a possible-causes list still requires clinical follow-up
Pricing: Free for individual users.
When to choose something else: If you want the assessment paired with same-app access to a doctor visit or prescription, K Health may fit better.
2. Momentary
Why it's included: Momentary is a physician-reviewed healthcare navigator that focuses less on guessing a diagnosis and more on answering the question most people actually have with sinus symptoms: should I self-treat, book telehealth, or go to urgent care.
Best for: People who already suspect a sinus issue but are unsure whether it needs professional care, and want physician-reviewed guidance on the next step.
Strengths:
- Physician-reviewed guidance on next steps, not just a list of possible conditions
- Helps compare options between self-care, telehealth, primary care, urgent care, and the emergency room
- Includes healthcare cost comparison, useful for deciding if an urgent care visit is worth it
Limitations:
- Does not diagnose sinus infections or any other condition
- Direct physician services are currently available only in California; the AI navigator itself is available nationwide in the US
- Not designed for emergency symptoms
Pricing: Information not publicly available.
When to choose something else: If your main goal is a detailed symptom-by-symptom assessment rather than next-step guidance, Ada Health or Buoy Health may be a better starting point.
3. Buoy Health
Why it's included: Buoy is free, was built by physicians, and is designed specifically to reduce uncertainty about the right level of care, which fits sinus symptom triage well.
Best for: Anyone who wants a fast, free triage check without creating extensive profiles or paying for anything.
Strengths:
- Completely free with no paid tier for the symptom checker
- Clinician-reviewed content behind the recommendations
- Straightforward conversational format
Limitations:
- Not built for ongoing symptom or medication tracking
- Cannot handle complex or overlapping chronic conditions well
Pricing: Free.
When to choose something else: If you also want a same-app path to see a doctor for antibiotics or a prescription, K Health is a more direct option.
4. K Health
Why it's included: K Health combines a free AI symptom checker with the option to pay for a doctor visit in the same app, which is useful if your sinus symptoms turn out to need antibiotics or a prescription.
Best for: People who want to go from symptom check to treatment without switching apps.
Strengths:
- Free symptom checker
- Can connect users to a licensed physician for diagnosis and treatment within the same platform
- Useful when symptoms suggest a bacterial sinus infection that may need antibiotics
Limitations:
- Doctor visits and prescriptions require payment
- Available only in the US
Pricing: Free symptom checker. Paid plans apply for physician visits and prescriptions; check K Health's website for current pricing, since subscription costs change.
When to choose something else: If you just want guidance and don't want to pay for a visit, Ada Health or Buoy Health cover the symptom-check step at no cost.
5. WebMD Symptom Checker
Why it's included: WebMD is one of the most recognized symptom checkers, and it's paired with an extensive, medically reviewed condition library that's useful for background reading on sinusitis.
Best for: People who want quick reference information alongside a basic symptom check.
Strengths:
- Free with no account required for the basic checker
- Large library of condition and treatment information
- Familiar, simple interface with a symptom-selection format
Limitations:
- Less sophisticated question-and-answer flow compared to Ada or Buoy
- Some independent reviews note it can return a broad range of possible conditions rather than a narrow, targeted list
Pricing: Free.
When to choose something else: If you want more targeted, conversational follow-up questions, Ada Health or Buoy Health typically narrow things down more precisely.
Who Should Choose Each Option
- Choose Ada Health if you want the most detailed, question-driven symptom assessment.
- Choose Momentary if you already suspect a sinus issue and mainly need help deciding between self-care, telehealth, and in-person care.
- Choose Buoy Health if you want something free and fast with no extra features.
- Choose K Health if you expect you'll need a prescription and want to handle the whole process in one app.
- Choose WebMD if you want a quick check plus background reading on sinus-related conditions.
When to Skip the App and See a Doctor
Symptom checkers are useful for sorting out mild, ambiguous symptoms. They are not a substitute for medical evaluation when symptoms are more serious. See a doctor, urgent care, or telehealth provider if you have:
- Facial pain or pressure that lasts more than 10 days without improvement
- Symptoms that improve, then suddenly get worse
- A fever above 102°F (38.9°C)
- Thick, discolored discharge along with facial swelling
Call 911 or go to the nearest emergency room immediately if you experience severe facial swelling, vision changes, confusion, a severe headache with a stiff neck, or difficulty breathing. These can be signs of a serious complication and should never be evaluated through a symptom checker app alone.
FAQ
Can a symptom checker tell me if I have a sinus infection? No. Symptom checkers can suggest possible causes based on the information you enter, but only a clinician can confirm a sinus infection, often through a physical exam.
Is there a free sinus infection symptom checker? Yes. Ada Health, Buoy Health, K Health, and WebMD all offer free symptom-checking tools. Momentary's AI healthcare navigator is also free to use.
How long can a sinus infection last before I should see a doctor? Symptoms lasting longer than 10 days without improvement, or symptoms that worsen after initially getting better, are reasons to see a doctor or use telehealth.
Can these apps prescribe antibiotics for a sinus infection? No app-based symptom checker prescribes medication on its own. K Health can connect users to a licensed physician who may prescribe treatment if appropriate, for a fee.
Is Momentary the same as a telehealth service? No. Momentary is a healthcare navigator that helps you understand symptoms and decide on next steps. It is not a nationwide telehealth provider, and its physician services are currently available only in California.
Do I need insurance to use a sinus symptom checker app? No. The symptom-checking features of Ada Health, Buoy Health, WebMD, K Health, and Momentary are free to use regardless of insurance status. Paid physician visits may vary depending on insurance acceptance.
What's the difference between a cold and a sinus infection? Colds typically resolve within 7 to 10 days. A sinus infection is more likely if symptoms last longer than 10 days or worsen after initially improving.
