Comparison

SickPredict™ vs Energy Level

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

Head to head
About

SickPredict™

This app leverages data from your Apple Watch to predict potential health changes up to 72 hours in advance. It calculates a personalized 'SickNumber™' and tracks your health metrics over time, providing alerts for risk level changes. It is intended for general wellbeing and informational purposes only.

Highlights
  • Predicts health changes up to 72 hours in advance
  • Calculates personalized SickNumber™
  • Tracks health changes over time
  • Provides periodic risk level alerts
  • Integrates with Apple Health data
  • Uses machine learning algorithms
Read full description

Requires an Apple watch and iPhone. Experience the future of personalized health! Based on tested scientific research and data from your Apple watch, the SickPredict™ App calculates, in real-time, your personalized SickNumber™ to help anticipate any upcoming changes in your health up to 72 hours in advance of experiencing any symptoms! Your personalized SickNumber™ is based on the specific health metrics gathered from your Apple watch. Key features: 1. Anticipates changes in your health up to 72 hours before you show symptoms! Research-tested, we can now predict oncoming illness with reasonable accuracy. Keep in mind, it is not perfect, but the scientific results have been conclusive in using certain data collected by your Apple watch to proactively identify potential changes in your health. 2. Track your health changes over time. Use this app to calculate your daily SickNumber™ and track your history. This app uses machine learning algorithms to track changes in your SickNumber™ over time. 3. Receive periodic alerts. The SickPredict™ app sends you daily notifications of your SickNumber™ and changes in your risk level. How It Works Over the past several years, research studies have been conducted involving more than 100,000 people wearing smart watches and the results were very positive, showing strong levels of accuracy in the ability to predict illness from health data that was recorded by the wearables. This app integrates with Apple Health and uses a multitude of data that is provided by your wearable everyday such as Active Energy, Body Temperature, Heart Rate, Heart Rate Variability, Oxygen Saturation, Resting Energy, Steps, Resting Heart Rate, Sleep Data and more. The SickPredict™ App calculates, in real-time, your personalized SickNumber™. The daily SickNumber™ ranges from 1-10 to help anticipate any upcoming changes in your health. Here are the SickNumber™ risk levels: o Low risk is 1-4 o Medium risk is 5-7 o Elevated risk is 8-10 Suggestions/Comments • Although it is not required to use your wearable at night, it is highly recommended. The results are significantly better if you consistently wear your watch at night and consistently throughout the day. • Remember, do not rely on the SickPredict™ App for medical advice or diagnosis. The App is not a replacement or substitute for professional medical care. Use the App for informational, general wellbeing purposes only. Always consult your health professionals if you have any health concerns. Subscriptions Payment will be charged to the credit card connected to your iTunes account after your trial period ends and when your subscription starts. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the trial period or current subscription period. The subscription options for the Basic Access subscription include either a $3.99/month monthly fee or $28.99/ year annual fee. Both include a free 1 week trial. Manage your subscription by going to your Account Settings on your iPhone. Additional Information: Visit www.SickPredictApp.com Terms of Use: Visit https://sickpredictapp.com/terms-of-use/

About

Energy Level

This app analyzes your health data to track your energy levels and optimize performance. It provides insights into your cardiac index and heart rate variability, offering a simple energy score to help you manage your well-being and fitness goals.

Highlights
  • Track energy levels
  • Optimize performance
  • Analyze cardiac index
  • Monitor heart rate variability
  • Real-time energy score
  • Workout analytics
  • Watch Complications and Widgets
Features
Read full description

Energy Level for iPhone and Apple Watch harnesses the power of your health data to track your Energy and optimize your Performance. Designed by athletes and data enthusiasts, this app helps you hit your fitness goals and improve your well-being by analyzing your Energy Level in real time. Easily track your Baseline Cardiac Index (BCI) and heart rate variability—two key metrics that reflect your performance and overall health. Energy Level crunches the data and gives you a simple energy score, offering clear insights into how you’re doing. With Watch Complications and Widgets, you’ll always have quick access to your Energy Level, whether you’re at work, home, or on the go. Check in anytime and make adjustments to stay on top of your day. If you’re an athlete, the workout analytics section lets you dive deep into how your workouts impact your Energy Levels. Get a clear breakdown of how each session affects your performance, so you can train smarter and push further. But Energy Level isn’t just for athletes—it’s for anyone focused on health and well-being. Whether you’re a pro or just aiming to maintain a healthy lifestyle, you’ll get a full view of your energy and insights that matter. So, if you’re ready to take control of your energy, download today and see your levels like never before.

Screenshots

SickPredict™4 screens
Energy Level4 screens

Verdict

The call

The clearest difference is monetization model: Energy Level at free with in-app purchases against SickPredict™'s subscription. Energy Level also leads on ads (none vs shown) and update cadence (every 11 days vs every 2 months). SickPredict™'s advantage is review sentiment (73% vs 59%) and iOS requirement (13.0 vs 17.6). On price, rating, ratings volume and in-app purchases 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. SickPredict™ sells 2 in-app purchases, starting at $3.99 per month and Energy Level sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.1 for SickPredict™ against 4.2 for Energy Level. Both are backed by a comparable volume of ratings — 30 and 49 respectively. Written reviews are what separate them: 73% of SickPredict™'s written reviews are positive against 59% of Energy Level's.

UpkeepUpdate frequency

SickPredict™ ships an update every 2 months, Energy Level every 11 days. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 5 level
SickPredict™ versus Energy Level: the parameters behind the verdict, then further details
ParameterSickPredict™Energy Level
PriceFreeFree
Rating4.1 (30 ratings)4.2 (49 ratings) — better
Positive reviews73.1% of reviews — better58.8% of reviews
Number of ratings3049 — better
Update frequencyEvery 2 monthsEvery 11 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPod, Apple Watch — betteriPhone, Apple Watch
Requires iOS13.0 — better17.6
Further details — not scored
Size58 MB89 MB
Age rating17+4+
DeveloperHealth Logic GlobalDaniel Kanaan

Customer experience

SickPredict™

All ratings30 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews26 reviews
Positive73.1%
Neutral0.0%
Negative26.9%

Energy Level

All ratings49 ratings
Positive75.5%
Neutral6.1%
Negative18.4%
Written reviews17 reviews
Positive58.8%
Neutral5.9%
Negative35.3%

In-app purchases

2 purchases

SickPredict™

Subscriptions2
  • Basic Access7 Days trial$3.991 Month
  • Basic Access7 Days trial$28.991 Year
2 purchases

Energy Level

Subscriptions2
  • Monthly Subscription$4.991 Month
  • Annual Subscription1 Month trial$34.991 Year

Questions

Is SickPredict™ free?
SickPredict™ is free to download, with in-app purchases available.
Is Energy Level free?
Energy Level is free to download, with in-app purchases available.
Which has better reviews, SickPredict™ or Energy Level?
Energy Level is rated higher. SickPredict™ averages 4.1 out of 5 from 30 ratings, while Energy Level averages 4.2 from 49 ratings.
Do SickPredict™ or Energy Level have ads?
SickPredict™ shows ads; Energy Level does not.
Which is updated more often, SickPredict™ or Energy Level?
SickPredict™ ships an update every 2 months, and Energy Level every 11 days. Most recently, SickPredict™ was updated on October 6, 2026 and Energy Level on October 13, 2026.

Other comparisons