Rex Fit
Rex.fit is an AI-powered nutrition and workout coach designed to help users achieve their health and fitness goals. With personalized recom...
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What is Rex Fit?
Rex.fit is an AI-powered nutrition and workout coach that helps users achieve health goals including weight loss, muscle building, and longevity. The platform's flagship product is The Drop, the world's first fully automated nutrition tracking wearable that uses computer vision and AI to automatically record what you eat throughout the day, providing complete breakdowns of calories, proteins, fats, and carbs without manual logging.
The app integrates seamlessly with WhatsApp, allowing users to send meal photos or simply text what they ate to log calories. Rex provides personalized workout recommendations on demand, daily reports with feedback on diet and lifestyle, and an AI body scanner that gives valuable insights into body metrics beyond traditional BMI measurements. The platform turns workouts into games using AI to recognize movements and provide instant feedback.
Rex.fit is designed for patients, athletes, and health-conscious users who want to live healthier, better, and longer. It's ideal for anyone struggling with accountability, manual calorie tracking fatigue, or those seeking personalized nutrition and fitness guidance backed by scientific research on health, nutrition, and longevity. The tool integrates with Apple Fitness, Google Fit, Oura, Garmin, and Eight Sleep.
The platform offers both app-based tracking and a wearable hardware solution. Users praised its easy calorie logging via photo or text, automated daily reports, personalized workout tracking, and the accountability from daily texting reminders that prevent binge eating.
Rex Fit pricing
Pricing model: Free
The Drop wearable hardware starts at $199 USD and includes a lifetime subscription to Rex Premium (valued at $19.99/month). The Drop is available in 3 colors: carbon black, metallic blue, and gold. Pre-orders are open globally via Kickstarter with first shipments expected in Q4 2025. Rex.fit offers a free AI calorie tracking solution through its app for basic meal logging via WhatsApp. Rex Premium includes AI-powered nutrition coach, integration with Apple Fitness and Google Fit, Oura, Garmin, and Eight Sleep. There is a special offer of 30% off Rex Nutribot for the first 6 months after trial period ends. The app is free to download on iOS and Android.
Rex Fit pros
- Fully automated nutrition tracking with The Drop wearable
- Computer vision AI automatically identifies food and macros
- Log meals via WhatsApp by sending photos or text
- No manual calorie counting required
- Personalized workout recommendations on demand
- AI body scanner provides metrics beyond BMI
- Daily reports with personalized diet and lifestyle feedback
- Gamified workouts with AI movement recognition
- Instant feedback on exercise form
- Integrates with Apple Fitness, Google Fit, Oura, Garmin, Eight Sleep
- Works entirely through WhatsApp chat interface
- Daily accountability texts prevent binge eating
- Backed by scientific research on health and longevity
- Free tier available for basic calorie tracking
- Same conversation for meals and workouts in one app
- Personalized meal plans tailored to dietary needs
- Bi-weekly newsletter with product updates
- AI nutrition coach available 24/7
Rex Fit cons
- The Drop wearable costs $199 upfront
- The Drop only available through Kickstarter pre-order
- First shipments expected Q4 2025, long wait time
- Limited to 3 colors: carbon black, metallic blue, gold
- Requires wearing pendant camera throughout day
- WhatsApp dependency may not appeal to all users
- Cloud processing needed for meal image analysis
- Privacy concerns with wearable food camera
- No standalone app mentioned, relies on messaging
- Beta testers only for early adopters initially
Frequently asked questions about Rex Fit
How does The Drop automatically track my calories?
The Drop uses computer vision and AI to know when you're eating food. Once the smart AI chip on the device classifies something as food, the LED light turns on and the device starts recording what you're eating. The cropped meal image is sent to the cloud for analysis, where algorithms break down your meal into calories, protein, carbs, and fats that you can see right away in the app.
Do I need to manually enter calories with Rex.fit?
No. The Drop says goodbye to manual calorie tracking forever by automatically recording what you eat. For app users, you can simply send Rex a photo of your meal or just text what you ate to log it, which feels like texting a friend. No more manually searching databases or estimating portion sizes.
How do I use Rex on WhatsApp?
Text 'Hi' on WhatsApp to +1 (229) 394 2678 or click the link to start. You can send meal photos or text what you ate for easy meal logging, receive daily reports about eating habits, get customized workout suggestions, ask dietary questions, and have Rex as your long-term health partner all through the WhatsApp chat interface.
What fitness goals can Rex.fit help me achieve?
Rex.fit is tailored to unique goals whether it's living healthier, shedding pounds, or gaining muscle. The platform provides personalized recommendations for weight loss, muscle building, or longevity. It helps optimize healthspan by providing strategies to extend life expectancy and enhance overall quality of life through evidence-based nutrition and workout protocols.
What is the AI body scanner and how is it better than BMI?
BMI is not accurate for diverse bodies that can take all shapes and sizes. Rex.fit's AI body scanner provides valuable insights into your body's metrics through body scanning, enabling informed decisions about fitness, nutrition, and overall well-being. It gives a more accurate picture of your body composition than traditional BMI calculations.
Does Rex.fit work with other fitness trackers?
Yes. Rex Premium includes integration with Apple Fitness and Google Fit, along with other popular trackers such as Oura, Garmin, Eight Sleep and more. This allows you to consolidate your health data across platforms and get a complete picture of your activity, sleep, and nutrition.
What are the daily reports and how do they help?
Daily reports provide personalized feedback and tips on your diet and lifestyle. They show what you ate at the end of the day, which keeps users from binge eating like they used to. The automated daily reports foster accountability through regular communication and act as a personal trainer, motivating users to stay on track with meal plans and exercise routines.
Can Rex suggest workouts for me?
Yes. Not sure how to workout today? Just ask Rex and get a tailored workout recommendation. Rex suggests exercises that suit your individual goals and preferences. The platform also offers a selection of free workouts designed to help beginners and seasoned athletes get started on their fitness journey without barriers.
Is my data safe with Rex.fit?
Rex.fit does not and will not sell any personal data to third parties, including information that could identify you personally like name, email, phone number, or payment details. Personal data is only shared with suppliers who help offer services and are bound by strict legal or contractual obligations to keep data safe. You have rights to access, rectification, erasure, and data portability.
What do users say about Rex.fit results?
Users report significant results: one user lost more than 10kg using Rex to track calories and get back in shape. Users praise the calorie logging feature as great and say they're never going back to MyFitnessPal. The benefit of having workouts and meals in the same conversation on your phone is highlighted, along with love for automated daily reports and the daily texting push for accountability.