
Automated nutrition tracking with AI – just snap or text your meal.
By Tanmay Verma, Founder · Last verified 03 Jul 2026
In short
rex.fit — Automated nutrition tracking with AI – just snap or text your meal. Best for People tired of manual calorie counting, WhatsApp users seeking simple diet logging, Weight loss seekers wanting automated tracking. Free to use.
See what real users actually say. We scan live discussions, reviews and complaints across the web and hand you an honest verdict — in under a minute.
3 free scans · no card needed · downloadable report
A solid entry point for anyone who hates manual logging. The WhatsApp interface is frictionless, but the lack of premium tier details and the pre-order status of The Drop limit its current appeal. Power users will want more features.
Compare with: rex.fit vs Curai Health, rex.fit vs Mindsera, rex.fit vs Arini
Last verified: July 2026
How likely is rex.fit to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Rex.fit offers two primary products: The Drop, a wearable that automatically records meals using computer vision, and Rex, an AI chatbot on WhatsApp that logs nutrition from photos or text messages. The platform is designed for individuals who want to eliminate manual calorie tracking and get personalized feedback on their diet and workouts. Targeting health-conscious consumers, athletes, and anyone seeking weight management, Rex.fit provides a conversational interface that feels like texting a friend. Users can send a photo of their meal or simply describe what they ate, and the AI logs calories, proteins, fats, and carbs. Additionally, it offers workout suggestions, daily report cards, and an AI body scanner to estimate body metrics beyond BMI. What sets Rex.fit apart is its focus on automation and convenience. The Drop wearable aims to fully automate nutrition tracking, while the WhatsApp integration lowers the barrier to entry. The service also includes a community and newsletter for product updates and health tips. However, the platform is primarily geared toward individual consumers, and B2B solutions (API) are listed but not detailed. While Rex.fit makes bold claims about accuracy and ease of use, users should note that the Drop is still in pre-order, and the core functionality currently relies on the WhatsApp chatbot. The service is free to start, but pricing for premium features or the wearable device may apply.
Rex.fit hits a real pain point: calorie tracking is tedious, and most apps require manual entry or barcode scanning. The WhatsApp chatbot eliminates that friction — just send a photo or a text message, and the AI logs macros automatically. For casual users who want a quick, low-effort way to monitor intake, this is a compelling option. However, the platform is still early. The Drop wearable, which promises fully automatic tracking, is only available for pre-order with no disclosed price or release date. The core experience today is the chatbot, which works well but may lack the depth of competitors like MyFitnessPal or Cronometer (barcode scanning, recipe database, micronutrient tracking). Where Rex.fit shines is simplicity and accountability. The daily report cards and workout suggestions add value beyond logging, and the AI body scanner is a nice bonus. But if you need integration with other fitness apps (Apple Health, Fitbit) or advanced features like meal planning, you'll be disappointed. Pricing is unclear beyond the free tier. The site doesn't list any paid plans, which raises questions about sustainability. The Drop's price is unannounced. We'd like to see more transparency before fully recommending it. For now, it's best as a supplementary tool for WhatsApp users who want an easier way to track meals.
Free, no signup — tell us your goal and get tools matched to your budget & existing stack.
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Common stack mates teams adopt alongside rex.fit, with the specific reason each pairing earns its keep.
Used rex.fit? Help shape our editorial sentiment research.