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Ada helps you and your loved ones check symptoms and discover what might be causing them – day or night without an appointment. Whatever’s bothering you, from stomach problems to headache, Ada’s free symptom checker can help you find answers and let you know if you should see a doctor.

Created by doctors to think like a doctor, our app is trustworthy, fast, and available when and where you need it. Join the 10 million people who have already downloaded the world's most popular symptom check app.

How do free symptom checks work?

You answer simple questions about your own or someone else’s health and symptoms.
Ada’s AI assesses your answers against its medical dictionary of thousands of disorders and medical conditions.
You receive a personalized assessment report that tells you what could be wrong and what to do next.

What can you expect from an assessment?

- Data privacy and security – we apply the strictest data regulations to protect you and keep your information private.
- Smart results – our core system connects medical knowledge with intelligent technology.
- Personalized health information – your guidance is personal to your unique health profile.
- Assessments for loved ones – if you assess someone else, their information stays separate from your own.
- Health checks – your assessments include information that may be relevant and helpful to your doctor.
- 24/7 access – you can use the free symptom checker anytime, anywhere.

What can you tell Ada?

Ada answers medical questions of every kind. Here are some of the most common searches:

- Fever
- Allergic rhinitis
- Loss of appetite
- Headache
- Abdominal pain and tenderness
- Nausea
- Fatigue
- Vomiting
- Dizziness

Medical conditions:
- Common cold
- Influenza infection (flu)
- Viral sinusitis
- Diabetes
- Tension headache
- Migraine
- Chronic pain
- Fibromyalgia
- Arthritis
- Allergy
- Irritable bowel syndrome (IBS)
- Anxiety disorder
- Depression

- Skin conditions such as rashes, acne, insect bites
- Pregnancy
- Children’s health
- Sleeping problems
- Indigestion issues, such as vomiting, diarrhea
- Eye infections

The Ada Health App is a Class I medical device in the European Union. Registration in other markets is pending.

CAUTION: Ada cannot give you a medical diagnosis. Contact urgent care immediately in an emergency. Ada does not replace your healthcare professional's advice or an appointment with your doctor.

We want to hear from you. If you have any feedback or just want to get in touch, reach us at hello@ada.com

What’s New

Version 3.11.0

Hi. We expanded maternal & child health conditions so it’s easier to care for loved ones. We also improved onboarding so tell your friends. Take care and email feedback to hello@ada.com

Ratings and Reviews

4.7 out of 5
112 Ratings

112 Ratings

jungjunghoseok ,

Lovely app. (:

I’ve struggled a lot with my mental health and wanted to try anything just anything before I went to see a therapist, I was desperate. I wanted to talk about my anorexia and depression, I typed in the symptoms and then all of the questions asked were minimal easy to understand and respectful, if you had answered you had an urge to end your life they let you know that there was help and someone out there who would listen. An amazing app 100% would recommend (no payment!!!)

wildredrose12 ,

Love this app!

This is a great app. I love that it feels interactive and like it’s ‘thinking’ about the symptoms you are describing. I also love that it gives a number of options as a possible cause of your symptoms and recommends whether or not you should contact a doctor.
It is also logically presented and worded with no sensationalist overtones that could alarm, just good, factual information.
Well done the developers. I will continue to use and recommend to friends and family.

Rise Up Review ,

Great app

I recommend this app to everyone. Though I haven’t (thankfully) needed or had this app save me from anything critical, it has been useful for many day 2 day issues. It’s a useful & free diagnosis if you aren’t sure whether 2 visit a doctor or talk to someone, super useful. The app makers should be proud.

App Privacy

The developer, Ada Health, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data

Data Linked to You

The following data may be collected and linked to your identity:

  • Health & Fitness
  • Location
  • Contact Info
  • User Content
  • Search History
  • Identifiers
  • Usage Data
  • Sensitive Info
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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