Comparison

ADI Study Watch vs iSelfie

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

Head to head
About

ADI Study Watch

Features
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ADI Study Watch is an app to evaluate the reference watch from Analog Devices to monitor vital signs such as PPG, ECG, Temperature, EDA measurements. The users can stream, plot the raw data from sensors real time, log the selected data in the NAND flash of the watch device for later analysis, change configuration and settings for each VSM application.

About

iSelfie

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Explore your heart wellness using your smartphone.  iSelfie ™  is an AI-based wellness application that uses your smartphone’s camera to capture a short facial video. The iSelfie  AI platform analyzes subtle changes in light reflected from your face that are associated with blood flow and uses this information to estimate wellness indicators.  In just 30 seconds, iSelfie helps you better understand your general wellness, follow changes over time, and see how your daily habits may affect your results.  No additional wearable or external accessory is required. A single iSelfie  video scan provides the following wellness indicators: 
 Cardiovascular Wellness 
 • Heart Age  
 • Resting Heart Rate  
 • Heart Rate Variability  
 • Energy  
 • Stress 
 
 Respiratory Wellness 
 • Respiratory Rate 
 The computational models used by iSelfie were developed and evaluated using reference data collected with clinical-grade devices of the type used in clinical and research settings. The methodology and performance of the underlying technology have also been evaluated in published research, including PMID: 41402088 and OVID. 
 - Additional information about iSelfie’s methodology, validation, and accuracy is available at https://iselfieprod.blob.core.windows.net/iselfie-prod-public/fact-sheets/accuracy-table-en.pdf
 During each scan, the smartphone camera captures a short facial video. iSelfie’s AI models and algorithms analyze visual information within the video and generates your personal wellness results. The camera captures the video; it does not independently calculate or interpret the wellness indicators.  Results appear immediately after each scan, along with explanations of what the indicators mean. Daily, weekly, monthly, and yearly trend graphs help you follow changes, recognize patterns, and understand how your habits may affect your general wellness.  You can also choose to share your results with family members or others who support your wellness goals.  iSelfie is intended for general fitness and wellness purposes only. It is not a medical device and is not intended to diagnose, treat, mitigate, cure, or prevent any disease or medical condition. Results should not be used to make medical decisions or as a substitute for professional medical advice, diagnosis, or treatment. If you have concerns about your health, consult a qualified healthcare professional. In an emergency, contact your local emergency services.  See for yourself. Take your first 30-second iSelfie.   Privacy Policy: https://iselfie.ai/privacy-policy 
 Terms of Use: https://iselfie.ai/terms

Screenshots

ADI Study Watch4 screens
iSelfie4 screens

Verdict

The call

The clearest difference is in-app purchases: ADI Study Watch at none against iSelfie's 2. ADI Study Watch also leads on ads (none vs shown) and iOS requirement (12.1 vs 15.1). iSelfie's advantage is update cadence (weekly vs every 5 months). On price 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. iSelfie sells 2 in-app purchases, starting at $19.99 per month. ADI Study Watch asks for nothing beyond the download.

UpkeepUpdate frequency

ADI Study Watch ships an update every 5 months, iSelfie weekly. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.

Scorecard4 real differences · 2 level
ADI Study Watch versus iSelfie: the parameters behind the verdict, then further details
ParameterADI Study WatchiSelfie
PriceFreeFree
Update frequencyEvery 5 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.1 — better15.1
Further details — not scored
Size42 MB250 MB
Age rating4+12+
DeveloperAnalog DevicesAiZtech Ltd

In-app purchases

None

ADI Study Watch

No in-app purchases

2 purchases

iSelfie

Subscriptions2
  • Heart Health Monthly$19.991 Month
  • Heart Health Annual$179.991 Year

Questions

Is ADI Study Watch free?
ADI Study Watch is free to download, with no in-app purchases.
Is iSelfie free?
iSelfie is free to download, with in-app purchases available.
Do ADI Study Watch or iSelfie have ads?
iSelfie shows ads; ADI Study Watch does not.
Which is updated more often, ADI Study Watch or iSelfie?
ADI Study Watch ships an update every 5 months, and iSelfie weekly. Most recently, ADI Study Watch was updated on October 10, 2026 and iSelfie on October 20, 2026.

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