FluStar vs SickPredict™
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FluStar
Track current cold and flu activity by ZIP code across the US. Get information on influenza symptoms, past epidemics, and how to differentiate between a cold and the flu.
- Real-time flu activity by ZIP code
- Cold and flu symptom information
- Educational content on influenza
- Data on past flu epidemics
- Distinguish between cold and flu
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FluSTAR provides up to date cold and flu activity information for every ZIP code in the country. If you're like most people -- catching the flu virus is something you'd rather NOT do. And if you have already come down with the flu, FluSTAR.com will provide you with information on how to help alleviate some of the symptoms caused by the influenza virus. FluSTAR.com can educate you about the Influenza virus, past flu epidemics as well as flu activity in every zip code in the United States. You will also see information on the difference between a cold and the flu. The FluSTAR system was developed to provide health care professionals and consumers with the most up to date information on the spread of the flu during the influenza season. Data for FluSTAR is gathered from different surveillance methods including RaPID Assay data, laboratory confirmation and clinical diagnosis data. Based on all of the surveillance methods, a regional as well as a national picture on influenza activity is generated.
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.
- 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
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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/
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Verdict
The clearest difference is review sentiment: SickPredict™ at 73% against FluStar's 0%. SickPredict™ also leads on rating (4.1 vs 2.3). FluStar's advantage is in-app purchases (none vs 2) and update cadence (fortnightly vs every 2 months). On price, ratings volume, 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
Both are free to download. SickPredict™ sells 2 in-app purchases, starting at $3.99 per month. FluStar asks for nothing beyond the download.
SickPredict™ holds the better App Store score, 4.1 against 2.3. Both are backed by a comparable volume of ratings — 13 and 30 respectively. Written reviews point the same way: 0% of FluStar's written reviews are positive against 73% of SickPredict™'s.
FluStar ships an update fortnightly, SickPredict™ every 2 months. The most recent releases landed on July 21, 2026 and July 5, 2026 respectively.
| Parameter | FluStar | SickPredict™ |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (13 ratings) | 4.1 (30 ratings) — better |
| Positive reviews | 0.0% of reviews | 73.1% of reviews — better |
| Number of ratings | 13 | 30 — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 22 MB | 58 MB |
| Age rating | 17+ | 17+ |
| Developer | IQVIA Inc. | Health Logic Global |
Customer experience
FluStar
SickPredict™
In-app purchases
FluStar
No in-app purchases
SickPredict™
- Basic Access7 Days trial$3.991 Month
- Basic Access7 Days trial$28.991 Year









