Comparison

Radiant Forehead vs Ruby Health

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

Head to head
About

Radiant Forehead

This application works with a specific infrared thermometer accessory to measure forehead temperature. Simply connect the device to your iPhone and use the app to scan the forehead for a quick temperature reading.

Highlights
  • Forehead temperature measurement
  • Works with infrared thermometer accessory
  • Quick scanning function
  • Connects via phone jack
  • Real-time temperature display
Features
Read full description

This APP is an infrared application of taking forehead temperature, it must be used with an infrared thermometer TMS ( please refer to http://www.radiantek.com.tw/products/tms.asp ). TMS with phone jack plug can be connected with the phone jack of iPhone , and then use the APP to take temperature. Make the thermometer within 1 cm from the central forehead and press the "SCAN" button on the screen of iPhone to get the forehead measurement. The time consuming for measurement might be 1 second.

About

Ruby Health

This app offers a non-invasive way to estimate your Iron and Circulation Scores using a fingernail selfie. It helps you monitor blood health, track lifestyle factors like water intake and menstrual cycles, and identify potential signs of iron deficiency or poor circulation. The app provides insights into your well-being and encourages a healthy lifestyle.

Highlights
  • Estimate Iron Score via fingernail selfie
  • Estimate Circulation Score via fingernail selfie
  • Track water intake
  • Track menstrual cycle
  • Log mood, supplements, and medications
  • View historical data and trends
Features
Read full description

Ruby is the FIRST patented smartphone app that instantly estimates your Iron Score* and your Circulation Score*. Ruby is a wellness tool intended only for maintaining and encouraging a healthy lifestyle, which may reduce the impact of iron deficiency or iron deficiency anemia. Ruby is not intended for diagnosing, curing, managing, preventing, or treating any disease or condition. Have you experienced dizziness, fatigue, or frequent headaches? Curious about your dietary iron needs? Ruby is designed to empower you to optimize your health by monitoring your blood health effectively. You can check your iron and circulation scores, log your water intake, and track your menstrual cycle in one convenient place. 1. Download the app 2. Take a fingernail selfie 3. Get your Iron and Circulation Scores, and more! Featured in Forbes, Business Insider, Bloomberg, TechCrunch, Fast Company, Associated Press, and BBC. *What is an Iron Score? It is a non-invasive assessment that helps determine your risk of iron deficiency anemia using a simple fingernail selfie to analyze the paleness of your fingernail beds. Not getting enough iron, folate or vitamin B12 in your diet may cause: • Brittle nails • Fatigue • Physical weakness • Lightheadedness • Dizziness • Pallor (Pale or yellowish skin) • Shortness of breath • Headaches • Cold hands and feet *What is a Circulation Score? is a measure of how fast your blood is moving in your fingertips. A score lower than 50 indicates poor circulation. Consult your doctor. A score between 50 and 75 indicates that circulation is borderline and could be improved. A score over 75 is normal. The majority of women and men score between 75 - 100. You may notice increases and decreases with physical activity. Ruby: Allows you to track your mood, supplements, medications, water intake, and menstrual cycle for the day. Gives you instant Iron and Circulation Scores with a fingernail selfie Saves your history in shareable format Ruby now offers a premium subscription that includes the following features: + Unlimited Tests – You can test as often as you want to get a better idea of how diet and lifestyle changes impact your blood health. The basic (free) subscription has a limit of 3-iron score tests and 50 circulation tests per month. + Calibration – Get 50% more accurate results with your unique algorithm. It calibrates every time you upload lab tests and take a fingernail selfie. + Data insights - You have full access to past test results. See how your Iron and/or Circulation Score has changed over time and track trends such as your mood and supplement use. + Set reminders - We know life gets hectic, and we can help you tap into your health by sending you reminders on when to take your fingernail selfie. Ruby is perfect for: • Women, especially those who are pregnant or have just given birth • Parents of young children and infants • People over the age of 65 • Vegetarians & vegans • High-performance athletes • Anyone managing their nutritional intake! *Ruby has room for improvement for users with severe anemia or other severe, chronic, health conditions. If you fall into this category and would like information on our product optimizations that would work best for you, please email ruby@sanguina.com for more information. At Sanguina, we're committed to empowering people to live better lives through accessible science and technology. Before making any medical decisions, seek a doctor's advice in addition to using the app. Terms & Conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Radiant Forehead4 screens
Ruby Health3 screens

Verdict

The call

The clearest difference is rating: Ruby Health at 4.3 against Radiant Forehead's 1.4. Ruby Health also leads on ratings volume (2K vs 30) and review sentiment (23% vs 6%). Radiant Forehead's advantage is in-app purchases (none vs 5) and iOS requirement (8.0 vs 15.0). On price, update cadence, ads and device support 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. Ruby Health sells 5 in-app purchases, starting at $8.99 per month. Radiant Forehead asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ruby Health holds the better App Store score, 4.3 against 1.4. That said, the two scores are not equally well evidenced: Ruby Health has 2K ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 6% of Radiant Forehead's written reviews are positive against 23% of Ruby Health's.

UpkeepUpdate frequency

Radiant Forehead ships an update every 3 weeks, Ruby Health fortnightly. The most recent releases landed on June 11, 2026 and October 1, 2026 respectively.

Scorecard6 real differences · 4 level
Radiant Forehead versus Ruby Health: the parameters behind the verdict, then further details
ParameterRadiant ForeheadRuby Health
PriceFreeFree
Rating1.4 (30 ratings)4.3 (2K ratings) — better
Positive reviews5.9% of reviews22.7% of reviews — better
Number of ratings302K — better
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size30 MB117 MB
Age rating4+4+
DeveloperRADIANT INNOVATION INC.Sanguina, Inc

Customer experience

Radiant Forehead

All ratings30 ratings
Positive10.0%
Neutral0.0%
Negative90.0%
Written reviews17 reviews
Positive5.9%
Neutral0.0%
Negative94.1%

Ruby Health

All ratings2,009 ratings
Positive82.9%
Neutral4.3%
Negative12.7%
Written reviews119 reviews
Positive22.7%
Neutral13.4%
Negative63.9%

Bugs and requests

Radiant Forehead

Not enough reviews yet to summarise bugs or requests.

Ruby Health

Reported bugs

3 issues
  • Camera focus problems
  • App freezing or crashing
  • Verification link issues

Requested features

3 requests
  • Bypass calibration option
  • More free tests per month
  • Compatibility improvements for newer devices

In-app purchases

None

Radiant Forehead

No in-app purchases

5 purchases

Ruby Health

Subscriptions5
  • MyMobile Monthly Legacy7 Days trial$8.991 Month
  • Ruby Premium Monthly7 Days trial$12.991 Month
  • MyMobile Semi-Annual Legacy7 Days trial$29.996 Months
Show 2 more
  • MyMobile Annual Legacy7 Days trial$69.991 Year
  • Ruby Premium Annual7 Days trial$99.991 Year

Questions

Is Radiant Forehead free?
Radiant Forehead is free to download, with no in-app purchases.
Is Ruby Health free?
Ruby Health is free to download, with in-app purchases available.
Which has better reviews, Radiant Forehead or Ruby Health?
Ruby Health is rated higher. Radiant Forehead averages 1.4 out of 5 from 30 ratings, while Ruby Health averages 4.3 from 2K ratings.
Do Radiant Forehead or Ruby Health have ads?
Neither Radiant Forehead nor Ruby Health shows ads.
Which is updated more often, Radiant Forehead or Ruby Health?
Radiant Forehead ships an update every 3 weeks, and Ruby Health fortnightly. Most recently, Radiant Forehead was updated on June 11, 2026 and Ruby Health on October 1, 2026.

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