Comparison

D Minder Pro vs Function Health

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

D Minder Pro

Track and manage your Vitamin D intake and sun exposure. This app calculates optimal sun exposure times based on your profile and location, and integrates with Apple Health for seamless data exchange. It also provides forecasts and notifications for vitamin D generation opportunities.

Highlights
  • Vitamin D tracking and management
  • Apple Health integration
  • Sun exposure calculation
  • Optimal exposure time alerts
  • Daily forecasts and solar position
  • History and future event scheduling
Features
Read full description

The idea behind this application is that it will help you track and manage your Vitamin D. This new version integrates with the Apple Health app to make seamless data exchange possible in the following ways: * on setup, profile information is fetched from the Health App if the user allows it * the user's weight (a factor in D generation) is fetched on an ongoing basis, making it unnecessary to update it * the app will write vitamin D doses, including session information into the Health app You setup basic information one time, like your height and weight and skin type and then any time you are outside, during the prescribed hours (and parts of the year), you can have it compute the amount of D you are getting in a stopwatch interface. It will also track how long you can stay out and warn you when the time is up. The application will notify you with the next opportunity to generate vitamin D. Each day, you can see forecasts based on your location, and you can also see the solar position, your generated vitamin D vs. target etc. In the Pro version, you can see your exposures's history and you will be able to schedule future events for next exposures. Weather data provided by Apple Weather. https://weatherkit.apple.com/legal-attribution.html Subscriptions: - D-Minder Pro Annual: $9.99/year (auto-renews) - D-Minder Pro Lifetime: $24.99 (one-time purchase) Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Terms of Use: https://dminder.info/terms Privacy Policy: https://dminder.info/privacy

About

Function Health

Take control of your health with comprehensive lab testing, personalized protocols, and AI-powered insights. Understand your body's data, track changes over time, and make informed decisions for long-term wellness. Connect wearables and upload records for a complete health picture.

Highlights
  • 160+ lab tests annually
  • Personalized health protocols
  • Private AI Chat for results
  • Connect health wearables
  • Advanced MRI & CT scans
  • Upload health records
Features
Read full description

Function membership helps you take control of your health with 160+ lab tests each year, personalized Protocols, and Private AI Chat—all backed by advanced science and your real data. Built with top doctors, Function gives you the power to understand your body, track how it evolves, and make meaningful change. NOW AVAILABLE: HOME OR OFFICE BLOOD DRAWS Schedule a concierge blood draw at your home or office. A licensed specialist comes to you and completes your blood draw in under 20 minutes. Available in select locations. 160+ LAB TESTS Membership includes testing for your heart, hormones, thyroid, liver, kidneys, toxins, nutrients, inflammation, autoimmunity, immunity and more. ADVANCED MRI & CT SCANS Detect early signs of cancer and hundreds of other potential conditions with the option to purchase advanced imaging for your brain, pancreas, liver, spine, ovaries, prostate, heart and much more. PRIVATE AI CHAT Ask questions about your results, identify meaningful patterns, and figure out where to focus next, with Private AI Chat—built in partnership with top clinicians. CONNECT WEARABLES Connect Apple Health and other health devices and wearables to see how your activity, sleep, and daily habits affect your lab test results and long-term health. PROTOCOLS Translate your lab results, scans and health history into clear, evidence-based plans for nutrition, activity, and supplements—all customizable to your goals and preferences. UPLOAD HEALTH RECORDS Upload past lab test results, scans, and other medical records for a more complete view of your health, all in one secure place. PROGRESS YOU CAN SEE Twice-yearly and On-Demand testing helps you track your results over time, monitor for early signs of disease, and identify where to focus next. ADVANCED LAB TESTS Membership includes 160+ lab tests, plus the option to purchase advanced On-Demand tests for: - Detection of 50+ cancers - Alzheimer’s risk detection - MTHFR gene variants - Advanced MRI and CT scans starting at $365 - Food allergies and sensitivities - …and much more ACCESSIBILITY What could cost as much as $15,000 on your own is included with membership for just $365/year. Lab testing is available at over 2,000 lab locations across the US, with no insurance needed. SECURITY Function was built for privacy and security. Function is built to HIPAA standards. Your information is secure. How it works: 1. Join Function and schedule your first set of lab tests. 2. Get your results and personalized Protocols. Ask questions with your Private AI Chat. 3. See your progress with 60+ lab tests at your Mid-Year Test. 4. Purchase MRI or CT scans and other advanced On-Demand Tests any time. DISCLAIMER Function Health is a technology company and not a laboratory or medical provider. All laboratory and medical services are provided by independent third parties. Function Health does not offer medical advice, laboratory services, a diagnosis, medical treatment, or any form of a medical opinion; its services are not a substitute for medical care, medical advice, and/or a detailed discussion with a physician or other licensed provider. If you have any questions regarding any laboratory results or any other information that you access through Function Health, you should contact a physician or other licensed provider. All material, information, data, and content that Function Health provides is strictly for general information purposes. For additional important information: https:// www.functionhealth.com/terms-of-service.

Screenshots

D Minder Pro4 screens
Function Health4 screens

Verdict

The call

The clearest difference is rating: Function Health at 4.9 against D Minder Pro's 4.0. Function Health also leads on in-app purchases (none vs 2) and ads (none vs shown). D Minder Pro's advantage is update cadence (every 2 days vs weekly). On price, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. D Minder Pro sells 2 one-off in-app purchases. Function Health asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Function Health holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Function Health has 25K ratings behind it against 1.8K, so its average is the more settled of the two. Written reviews point the same way: 34% of D Minder Pro's written reviews are positive against 62% of Function Health's.

UpkeepUpdate frequency

D Minder Pro ships an update every 2 days, Function Health weekly. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

Scorecard7 real differences · 3 level
D Minder Pro versus Function Health: the parameters behind the verdict, then further details
ParameterD Minder ProFunction Health
PriceFreeFree
Rating4.0 (1.8K ratings)4.9 (25K ratings) — better
Positive reviews33.9% of reviews62.0% of reviews — better
Number of ratings1.8K25K — better
Update frequencyEvery 2 days — betterWeekly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemium — betterSubscription
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.4 — better
Further details — not scored
Size37 MB202 MB
Age rating12+17+
DeveloperontometricsFunction Health

Customer experience

D Minder Pro

All ratings1,789 ratings
Positive72.3%
Neutral6.1%
Negative21.6%
Written reviews681 reviews
Positive33.9%
Neutral13.2%
Negative52.9%

Function Health

All ratings24,885 ratings
Positive99.0%
Neutral0.4%
Negative0.6%
Written reviews347 reviews
Positive62.0%
Neutral5.5%
Negative32.6%

User reviews

D Minder Pro

From 1.8K App Store ratings

What we love

  • 🚀 Useful for tracking vitamin D levels
  • 🌞 Helps with safe sun exposure
  • 👍 Accurate calculations
  • 🔋 Doesn't drain battery
  • 💡 Innovative concept

Room to improve

  • 🐛 Crashes or bugs
  • 🔍 Difficult to use or navigate
  • 🔧 Lacks customization options
  • 📊 Inaccurate data or estimates
  • 💸 Paid version not worth the cost

Function Health

From 25K App Store ratings

What we love

  • 🚀 Seamless process for blood tests and results
  • 📊 Comprehensive health insights and tracking
  • 🧠 Helpful clinician notes and recommendations
  • 👍 User-friendly and visually appealing app
  • 💰 Affordable compared to other options

Room to improve

  • 🔍 Lack of communication and support responsiveness
  • 🐛 Some bugs and usability issues in the app

Bugs and requests

D Minder Pro

Reported bugs

5 issues
  • App crashes on launch or during use
  • Location settings not working properly
  • Inconsistent data or calculations between devices
  • Inability to save or sync user data
  • Overcast detection not functioning correctly

Requested features

5 requests
  • Add more food options for vitamin D
  • Ability to edit past sun sessions
  • Provide more detailed reports and analytics
  • Add reminders or notifications for sun exposure
  • Allow customization of skin type and location

Function Health

Reported bugs

2 issues
  • App sometimes redirects back to the home screen when trying to view results
  • Occasional typos and formatting issues in the app

Requested features

3 requests
  • More customization options in the app settings
  • Ability to print or export test results and recommendations
  • Specific supplement recommendations rather than broad suggestions

In-app purchases

2 purchases

D Minder Pro

One-time2
  • DMinder Premium$1.99
  • Lifetime Ad Removal$24.99
None

Function Health

No in-app purchases

Questions

Is D Minder Pro free?
D Minder Pro is free to download, with in-app purchases available.
Is Function Health free?
Function Health is free to download, with no in-app purchases.
Which has better reviews, D Minder Pro or Function Health?
Function Health is rated higher. D Minder Pro averages 4.0 out of 5 from 1.8K ratings, while Function Health averages 4.9 from 25K ratings.
Do D Minder Pro or Function Health have ads?
D Minder Pro shows ads; Function Health does not.
Which is updated more often, D Minder Pro or Function Health?
D Minder Pro ships an update every 2 days, and Function Health weekly. Most recently, D Minder Pro was updated on October 13, 2026 and Function Health on October 14, 2026.

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