FluStar vs Sage Healthspan
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.
Sage Healthspan
Understand, track, and improve your wellness with real health data. Upload blood test results for AI analysis, discover your biological age, and manage supplements. Access your information securely, even offline.
- Blood test result tracking
- AI-powered health analysis
- Biological age calculation (PhenoAge)
- Supplement shopping and subscriptions
- Offline mode for data access
- Secure sign-in options
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Sage is your personal health companion — built to help you understand, track, and improve your wellness through real data. BLOOD TEST TRACKING Upload your blood test results and let Sage organize everything in one place. View trends over time, dive into individual biomarkers, and understand what your numbers mean with clear, easy-to-read insights. Edit your results anytime to keep your records accurate. AI-POWERED ANALYSIS Get intelligent analysis of your health data powered by AI. Sage reviews your blood work and highlights what matters most, so you can have more informed conversations with your healthcare provider. PHENOAGE BIOLOGICAL AGE Discover your biological age with PhenoAge — a science-backed calculation that uses your blood biomarkers to estimate how your body is aging compared to your calendar age. Track improvements over time as you make lifestyle changes. SUPPLEMENTS & SHOP Browse and purchase curated supplements tailored to support your health goals. Subscribe and save on the products you use regularly, and manage everything from your cart to checkout — all within the app. OFFLINE MODE Access your health data, test results, and AI analysis even without an internet connection. Sage keeps your most important information available wherever you are. SECURE SIGN-IN Sign in with Apple or email and password. Your health data is private and protected with industry-standard authentication. KEY FEATURES • Blood test result scanning and manual entry • Biomarker trend tracking with detailed history • AI-powered health analysis and insights • PhenoAge biological age calculation • Supplement shopping with subscription options • Secure Sign in with Apple support • Full offline access to your health data • Export and share your health records • Dark-mode friendly, clean interface Your health journey starts with understanding your data. Sage makes it simple.
Screenshots
Verdict
The clearest difference is review sentiment: Sage Healthspan at 70% against FluStar's 0%. Sage Healthspan also leads on rating (4.6 vs 2.3) and ads (none vs shown). FluStar's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On price, ratings volume and update cadence 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. Sage Healthspan sells 1 one-off in-app purchase. FluStar asks for nothing beyond the download.
Sage Healthspan holds the better App Store score, 4.6 against 2.3. Both are backed by a comparable volume of ratings — 13 and 17 respectively. Written reviews point the same way: 0% of FluStar's written reviews are positive against 70% of Sage Healthspan's.
FluStar ships an update fortnightly, Sage Healthspan every 3 weeks. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.
| Parameter | FluStar | Sage Healthspan |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (13 ratings) | 4.6 (17 ratings) — better |
| Positive reviews | 0.0% of reviews | 70.0% of reviews — better |
| Number of ratings | 13 | 17 — better |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 22 MB | 183 MB |
| Age rating | 17+ | 17+ |
| Developer | IQVIA Inc. | Sage Healthcare, LLC |
Customer experience
FluStar
Sage Healthspan
In-app purchases
FluStar
No in-app purchases
Sage Healthspan
- Unlimited scans$9.99









