DeathX vs Feby
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DeathX
This app offers personalized health insights, including biological age analysis, aging pace tracking, and biomarker monitoring. It helps users understand their health and make informed lifestyle choices for longevity. Compete on leaderboards to become the slowest aging person.
- Biological age analysis
- Pace of aging insights
- Biomarker tracking
- Longevity workouts
- Global leaderboards
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Discover the future of health with DeathX – your ultimate companion in personalized health. Delve deep into your biological age, understand the nuances of your aging process, track longevity focused workouts, and keep a vigilant eye on crucial biomarkers, all in one seamless experience. DeathX Key Features: • Biological Age: Uncover the true age of your body through advanced analysis, blending lifestyle choices, biomarker data, and health practices into a comprehensive health overview. • Pace of Aging Insight: Decode the velocity of your biological aging. Learn whether you're aging faster or slower than your chronological age suggests, empowering you with the knowledge to take proactive steps toward longevity. • Biomarker Tracking: Stay ahead with real-time monitoring of key health indicators. DeathX makes it easy to track changes and adapt for optimal health. • Leaderboards: Compete against the world to become the slowest aging person alive. Subscription & Terms: Download and use DeathX for free. Choose the auto-renewing subscription to use DeathX features. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours before the end of the current period. Manage subscription plans and turn off auto-renewal in Account Settings > Manage subscriptions after purchase. If offered, any unused portion of a free trial period will be forfeited when the user purchases a subscription to that publication. Please note, DeathX is designed to enhance, not replace, professional medical consultation. For medical concerns, always consult a healthcare professional. Embrace a healthier, informed lifestyle with DeathX. Let's redefine aging together. Visit our Terms of Service: https://www.biopace.co/terms-of-service Review our Privacy Policy: https://www.biopace.co/privacy-policy
Feby
This AI-powered tool analyzes your food intake to provide nutritional insights. It helps you understand the health impact of your meals and make informed dietary choices. Achieve your wellness goals with personalized guidance.
- AI nutritional analysis
- Food intake tracking
- Dietary insights
- Personalized guidance
- Wellness goal support
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Feby is an AI nutritional assistant that helps keep track of your nutrition Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://feby.ai/privacy.html
Screenshots
Verdict
The clearest difference is review sentiment: Feby at 100% against DeathX's 25%. Feby also leads on rating (5.0 vs 4.0) and ads (none vs shown). DeathX's advantage is update cadence (every 3 days vs weekly) and ratings volume (4 vs 1). On price, in-app purchases, monetization model 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. DeathX sells 3 in-app purchases, starting at $29.99 per month and Feby sells 4 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
Feby holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 25% of DeathX's written reviews are positive against 100% of Feby's.
DeathX ships an update every 3 days, Feby weekly. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.
| Parameter | DeathX | Feby |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 25.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | 1 |
| Update frequency | Every 3 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 50 MB | 48 MB |
| Age rating | 12+ | 4+ |
| Developer | Jacob Safar | Push Labs |
Customer experience
DeathX
Feby
In-app purchases
DeathX
- DeathX Monthly Subscription$29.991 Month
- DeathX+ Yearly Promo$29.991 Year
- DeathX Yearly Subscription$199.991 Year
Feby
- Premium Monthly$7.991 Month
- Premium Yearly3 Days trial$29.991 Year
- Premium Monthly$7.99
- Premium Yearly$29.99









