SigmaMD appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for SigmaMD is 78 out of 100 points across 7 verification signals from App Store and developer data.

SigmaMD Reviews: Is It Legit?

Name: SigmaMD
Rating: 3.1 (39 reviews)

SigmaMD

Sigmoid Health

💪 Health & Fitness

🏥 Medical

Customer Experience

Positive experience21.4% of reviews

Neutral0.0% of reviews

Negative experience78.6% of reviews

~ Based on 14 written reviews from the US App Store.

Is SigmaMD Safe?

SigmaMD has mixed safety signals based on user ratings. AppsHunter Safety Score for SigmaMD is 65/100.

This assessment is based on 39 user ratings, with an App Store average of 3.1/5.

Safety Analysis

48.7% of ratings point to a safe experience

2.6% of ratings suggest some concerns

48.7% of ratings point to a risky experience

~ Based on 39 App Store ratings for SigmaMD.

Is SigmaMD Legit?

SigmaMD appears legitimate, with a few gaps. AppsHunter Legitimacy Score for SigmaMD is 78/100.

Based on 78 of 100 points across 7 verification signals from App Store and developer data.

Top reviews

Most Recent Highest Rated Lowest Rated

Constant updates

This app is never ready to use. I log in every couple weeks or so and every time I have to update it. If this wasn't the platform my doctor's office required I wouldn't use it ever.

JJessiebee3113

a month ago

Response from developer

Thanks for the feedback. It's very normal for apps to get frequent updates with fixes and new features. Turning on automatic updates (Settings → App Store → App Updates) keeps the app ready whenever you open it.

Shuts down

This is not what we want in an app. It continuously shuts down and doesn’t recognize passcode. I’m not elderly-but I imagine older patients would get just as frustrated. The messaging is not titled.

DDarkShadow232

a month ago

Response from developer

Thanks for the feedback. For your security, the app asks for your phone's own passcode or Face ID, not a separate SigmaMD code. If the app keeps closing, make sure you're on the latest version, and let your clinic know so we can look into it.

Poor UX and bugs

There are some odd choices in this app. You can have multiple chats with your provider but you:

1. cannot set a subject for the chat
2. cannot do anything to indicate when a chat is concluded to your satisfaction

You wind up with multiple chats, all active, with no sense of what they're for. It's confusing and annoying.

You get lab results. If you haven't read a few, you can't tell which are unread. A single lab may create multiple results. What to tap? I don't know!

There's a "devices" section but no way to add a device... Same with goals, services, imaging, vitals (Let me connect Apple Health to it 🤦🏻‍♂️???), conditions...

Of course, some of these may be for the doctor. But when it says "no user-entered data", you'd think they want me to enter some. Yet the app does not offer. So the user here is the doctor? As the patient, I don't know. Again, very frustrating.

Also, seems odd and uncomfortable, as a patient, to see sections of the app lie fallow. If a doctor doesn't use your app for some of its purposes, they should be able to disable/hide that section so that it doesn't show up for the patient either. Otherwise, it can look like something that just goes missed in the relationship when the doctor probably just doesn't use the app's features and records the information another way.

When entering my details in my personal information, Not Every Word Needs Capitalization Because Most Aren't My Name.

Oh, and it regularly logs me out. Or it believes I'm logged out. I quit the app, come back, FaceID, and I'm back into the app.

Overall, very disappointed that my provider chose this app. I can only imagine that they did because it must be a far cheaper software as a service than its competitors.

It's so fun being an alpha tester for an app that's not in TestFlight. Yes, this is sarcasm. This app should not be on sale. Period.

Please, put more into this app. It's shameful, in its current state.

Better still, take it off the App Store and put it back up once you've worked out these basic issues.

— A patient frustrated with your app

Ssleight42

a month ago

Response from developer

Thanks for the detailed feedback. A couple of clarifications: asking for Face ID when you return to the app is a security feature that protects your health information, not a logout. Sections like vitals, goals, and conditions mostly show what your clinic records in your chart, so they fill in as your care team adds to it.

how bad sigmamd is

The worst app you can ever get Medicare on

SWSigmamd is the worst

3 months ago

Response from developer

There's not much here for us to act on. SigmaMD isn't a Medicare app — it's provided through your clinic — so this sounds like a mix-up with a different app. If you've got a real issue, tell us what it is or reach out to your clinic and we'll help sort it out.

Does this app work?

I can never sign in. It sends a code to email that I can’t even use in the app screen because it won’t bring up the keypad. It’s frustrating at best.

Ffixinkitties

3 months ago

Response from developer

We're not aware of any keyboard issues on the sign-in screen, and it isn't something we're currently seeing on our end. If you're having trouble getting into the app, the fastest way to get help is to reach out to your provider's team — they can walk you through sign-in and make sure you have access.

Create an account

What a backwards way to “create and account”, when you need an invitation code that’s sent to the registering email, how can you register without a code and how do you get a code without creating an account. Stupid.

DDesertBlue77

4 months ago

Response from developer

Nothing stupid about it — you just misread how it works. You don't self-register: your clinic sends an invitation to your email, and the code in that invite creates your account. No account needed first, no chicken-and-egg. If you want in, ask your clinic for an invitation.

Nightmares

This app consistently refused for days to recognize my APPLE ID password, so I couldn’t download it to pay my doctor or access lab records. I used Apple to help me change my ID password to my iPhone to ensure I did it right, and was then was able to download the app to my iPhone. Then I shut off my iPhone and turned it back on to clear it and tried to use the SAME password I had used to download it, AND THIS STINKING APP REFUSED TO ACCEPT IT! One star is a GENEROUS rating! I tried to respond to the developer to tell them this AND THE APP REFUSED TO ACCEPT THE RATING. It just spun and spun. If I lose a doctor because of this garbage, I will be REALLY angry! I finally did get in hours after I wrote the above and recovered my first labs so I updated this from a 1 to a 2 star review, but it was like pulling teeth every step of the way, with help from Apple 4 times and having to change my Apple ID password AGAIN (and this app didn’t accept that the first time either, though it finally did today on the second try). I’ll sign out tonight with no assurance that it’ll still work tomorrow, but we’ll see. I built and used to supervise a Web Dev team considered by the Federal Government and industry to be the best they had, so I know what good code works like. This ain’t it.

RRCNSkyhorse

4 months ago

Response from developer

Glad you got your labs in the end. The password prompts to download and the rating screen that "spun and spun" are Apple's, not ours — Apple Support (support.apple.com) is the right place to get those sorted out.

Can’t make sppointments

My dr uses this app. I cannot make appointments with app. It only gives me the urgent care option and when I click that option there are no availabilities. I have done everything to fix this on my end so what can you do to fuc it?

JJSulzie

5 months ago

Response from developer

Thanks for flagging this, and we're sorry for the frustration. Appointment availability in the app is set by your clinic — if you're only seeing urgent care with no open times, it usually means your clinic hasn't enabled self-scheduling for other visit types yet. The best next step is to reach out to your clinic and ask them to open up availability; their team controls which visits and times patients can book.

Not Impressed

Poor access and connect-ability… I tried to update, no place to do it! I’m bummed my clinic chose this app. I’ve tried to go to help or connect to the app, no response….👎

Nnanaandi

6 months ago

Response from developer

We're genuinely sorry the experience fell short. The best way to get this sorted is to reach out to your clinic's team — they can make sure you're set up with full access to everything you need. Your feedback helps us keep improving.

Good Beginning

I’m new to this and may change my review after a while. For now, I’ll just say it is easy to use which, when you are faced with some medical issue, if very comforting. It’s really good to know that you can get real, useful advice, from a known professional at any time of day or night. Did I also say reliable? It is!

CDChange the deal

8 months ago

Response from developer

Thank you — we're so glad it's been easy to use and reassuring when you need care. That's exactly what we're going for. Welcome aboard!

Intuitive and easy to use

I have difficulty mastering new software platforms but Sigma is a breeze. Simple, clean UI means there’s no confusion of buttons or menus. And the fact that my messages are integrated with my chart means everything is right at my doctor’s fingertips.

Llb_puffy

8 months ago

Response from developer

Thank you so much! We work hard to keep things clean and simple, and it's great to hear the chart-integrated messaging is helping you and your doctor stay connected.

Not good

Wow this implementation is just awful.

…………..1)47;8-

9 months ago

Response from developer

We’re sorry to hear this. Your feedback helps us improve, and we’d appreciate the chance to learn more about what didn’t work.

Phone-Only Is Unacceptable for Healthcare

Forcing patients into a mobile only platform for managing medical records is inexcusable. No web access, no tablet optimization; just a tiny phone screen for reviewing test results, medication lists, and appointment details. This creates serious accessibility problems for patients with vision issues or anyone coordinating complex care who needs proper screen space and keyboard access. Healthcare information is too important to cram onto a 6-inch display. Every modern healthcare platform offers multi-device access. The fact that SigmaMD doesn't shows a fundamental misunderstanding of how patients actually manage their health. Until they build a proper web interface, ask your doctor for a platform that respects basic usability.

Sswitching...

10 months ago

Response from developer

Thank you for sharing this feedback. We agree that patients need flexible ways to access their health information. While SigmaMD is currently mobile-first, we’re actively working on a patient web portal designed for larger screens and improved accessibility, which will be released soon. We appreciate you taking the time to highlight this and help us improve.