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CoreTemp: Patented Body Temperature Measurement

· v9.3.0
★★★☆☆ (30) ↓ 1,000 downloads 3 Free

About

IMPORTANT: FOR DETAILS, TAP THE BLUE "More" LINK BELOW! _____________________________________________ If you find CoreTemp valuable, please leave a review! Thank you! CoreTemp – Next-Gen Core Body Temperature App for Garmin CoreTemp is a groundbreaking app that brings accurate core temperature estimation to your Garmin watch. Unlike typical solutions that only track skin temperature, CoreTemp uses a patented algorithm that fuses heart rate (HR), skin temperature, and HRV trends to deliver a much more reliable estimate of your true core body temperature-helping you make better decisions for your health and performance. Key Features: • Patented Algorithm: CoreTemp is the first Garmin app to combine heart rate, HRV, and skin temperature to estimate your real core body temperature-far beyond what standard smartwatches offer. • Continuous Smart Monitoring: Automatically detects your current physiological state every 10 minutes (5 minutes for premium users), updating your core temperature in real time as your body changes. • Scenario Engine: Every calculation is scenario-driven! The app evaluates dozens of body states (rest, sleep, fatigue, heat stress, recovery, dehydration, hypothermia, fever, and more) based on live sensor data, providing context-aware temperature corrections and actionable insights. • Visual & Graphical Feedback: Instantly see your latest values and 8-hour history in easy-to-read, color-coded graphs. Premium users get full skin+core history; trial users see simplified, recent core history. • Calibration & Customization: Individual calibration for optimal accuracy. Adjust alert intervals, sound/vibration, and notification types from an intuitive menu. • Smart Alerts: Receive warnings for dangerous temperature or physiological states. Premium users can fully customize notification intervals and sounds; trial users get basic alerts only. • Data Export: Premium subscribers can export up to 300 readings as structured JSON for personal use or to share with healthcare providers-delivered via email in a convenient TXT file. • Detailed About Menu: Find your device’s app ID, firmware, developer contact, full version info, compatibility, and built-in debug tools-all in one place. _____________________________________________ Subscription & Support: CoreTemp is part of the unified FeliXGear subscription system. One low-cost subscription unlocks all current and future premium apps! → Details, supported apps, and up-to-date pricing: https://felixgear.net • At least one new premium app is released every month! • All info, activation steps, and troubleshooting are always available on the website. Feedback & Support: Questions? Issues? Suggestions? Contact me directly through the site: https://felixgear.net/ Stay safe, stay informed-upgrade to premium for the full CoreTemp experience!

What's new

v9.3.0 - Added daytime HRV display to the main screen. - Improved scenario detection between light activity, household movement, and rest. - Improved passive heat-load detection for hot days. - More reliable background alerts and app wake-up behavior. - Reduced background battery usage by throttling network operations. - Multiple algorithm tuning updates for core-temperature response speed and stability. v9.2.0 Added retroactive support for Vivoactive 4 (best-effort compatibility; functionality is not guaranteed). Updated workout detection logic to improve cold-weather training recognition. v9.1.0 Added support for the Venu 4 series and Fenix 8. v9.0.0 Introduced 3 new scenarios. Algorithm optimization for more accurate measurements. v8.1.0 Added compatibility with the new Venu X1 model. Optimized background calculations for improved efficiency and battery life. v8.0.2 New supported device: Venu X1 v8.0.1 Micro fix: Users without a Donor ID can no longer upload data. v8.0.0 Major Data Export & Dashboard Update What’s new: - No more direct export from the watch or app! - Your recorded measurements are now securely uploaded and managed online. - All data is available from the new Dashboard on my website - just log in via the Subscriber Login menu. - You can view and analyze your CoreTemp data for up to 7 days after upload. - After 7 days, all session data is automatically deleted for privacy and storage optimization. - You can download any of your sessions in JSON format - simply click the “Download (JSON)” button next to each session on the Dashboard. How to access your data: 1. Go to felixgear.net and click on Subscriber Login. 2. Log in with your Donor ID and registered email. 3. Use your personalized Dashboard to view your recorded data and download it if needed. Important: - If you wish to keep your data for longer than one week, make sure to download your sessions in time. v7.6.7 Improved the realism of natural core temperature fluctuations: Your core temperature now follows a more realistic daily (circadian) rhythm, gradually rising during the afternoon and lowering overnight - just like in real life. v7.6.5-7.6.6 Core temperature correction is now less strict: the app adjusts your estimated body temperature more responsively based on your sensor data and daily changes v7.6.4 Adjusted scenario detection conditions for improved accuracy v7.6.2-7.6.3 New scenario: Casual activity A new scenario called "Casual activity" has been added. This state detects typical, everyday movements - like walking around the home or office - where all sensor values remain within normal ranges. Why? This update reduces the number of unclassified (fallback) states, making the app’s feedback more accurate and relevant to your daily life. v7.6.1 Scenario transitions are now more sensitive, allowing faster and more accurate detection of state changes! v7.6.0 Fixed notifications (VERSION JUMP) v7.5.7-7.5.99 Fixed notifications v7.5.5-7.5.6 Fixed some other scenarios. v7.5.1-7.5.4 Fixed NORMAL_REST scenario behavior v7.5.0 Due to severe memory limitations on older devices, I had to reduce the number of compatible watches. Thank you for your understanding! v7.4.2 Quick fixes in starting process v7.4.0-7.4.1 Added a new Progress View to indicate background operations (e.g., export function). Minor code optimizations and improvements. v7.3.0-7.3.1 Refactored Scenarios

Permissions

BackgroundSensorHistoryUserProfileCommunicationsSensor

Details

Compatible with 77 devices
Updated Jun 29, 2026
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