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Tools🏥 Healthcarerex.fit
rex.fit

rex.fit

Freemium

Automated nutrition tracking with AI – just snap or text your meal.

By Tanmay Verma, Founder · Last verified 03 Jul 2026

0 views
Added 7d ago
77/100Safe Bet
Visit Website

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.

Compared withvs Rapidsosvs Codametrixvs Isomorphic Labs

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Editorial Verdict

Best for
People tired of manual calorie countingWhatsApp users seeking simple diet loggingWeight loss seekers wanting automated trackingFitness enthusiasts who need quick workout suggestions
Not ideal for
Users who want comprehensive recipe or macro tracking beyond loggingThose requiring offline or non-mobile app functionalityPeople looking for in-depth meal planning or barcode scanningUsers needing integrations with other fitness apps or wearables (not mentioned)

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

Viability Score

77/100
Safe Bet

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.

momentum
55
funding runway
80
website health
90
wrapper dependency
100

Last calculated: July 2026

How we score →

Key Features

  • AI meal logging via photo or text on WhatsApp
  • Automated calorie, protein, fat, and carb tracking
  • Daily personalized report and feedback
  • Tailored workout suggestions
  • AI body scanner for body metrics
  • Text-based conversational interface
  • Track meals without manual entry (The Drop wearable)
  • Integration with WhatsApp for convenient logging
  • Free AI meal planner and TDEE calculator tools
  • Bi-weekly newsletter with product updates and health tips

About rex.fit

FreemiumBeginner-friendlyAPI availableMobile · Web · API

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.

Behind the Verdict

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.

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Use Cases

  • Log your lunch by sending a photo to Rex on WhatsApp and get instant calorie count.
  • Ask Rex for a workout suggestion when you don't know what to do at the gym.
  • Receive a daily summary of your nutrition and tips to improve your diet.
  • Use the AI body scanner to estimate body fat percentage and muscle mass.
  • Pre-order The Drop to automate meal tracking without even opening your phone.

Limitations

  • The Drop wearable is not yet available (pre-order).
  • The service primarily operates through WhatsApp, limiting platform choice.
  • There is no mention of a web dashboard or advanced analytics beyond daily reports.
  • Free tier features may be limited; premium pricing is not clearly outlined.

12-month cost

Project the real annual outlay, including the implied monthly cost when only an annual tier is published.

Annual total
Free
Over 12 months
Effective monthly
—
—

Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.

Integrations

WhatsApp

Resources & Guides

  • Resourcerex.fit

    Home · rex.fit

    Helpful link from rex.fit

Frequently Asked Questions

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Common stack mates teams adopt alongside rex.fit, with the specific reason each pairing earns its keep.

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24/7 text-based primary care with a dedicated care team

Mindsera

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Arini

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Featured Head-to-Head Comparisons

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Rex Fit vs Codametrix

Rex Fit vs Isomorphic Labs

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Curai Health

Curai Health

24/7 text-based primary care with a dedicated care team

PaidTry
Mindsera

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AI journal that analyzes your thoughts for mental wellbeing

FreemiumTry
Arini

Arini

AI receptionist for dentists: 24/7 scheduling & missed-call recovery

Contact SalesTry

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Details

Pricing
Freemium
Skill Level
Beginner-friendly
Platforms
Mobile, Web, API
API Available
Yes
Pricing & overview verified
7d ago

Categories

🏥 Healthcare

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