Side by side
Flex AI vs Rex Fit
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
Build Muscle and Lose Weight Fast
AI-powered nutrition and fitness coach for personalized health goals.
Primary task
Fitness
Fitness
Pricing
Freemium · Free + from $9.99/mo
Unknown
Pricing details
Free + from $9.99/mo
Not documented — check the provider
Billing cycle
Monthly
Not documented
API access
Not documented
Not documented
Platforms
Web, iOS
Web
Integrations
Make
WhatsApp, Make
Source rating
5.0 / 5 · 3 ratings
No rating recorded
Catalog views
7k
1.4k
Estimated monthly traffic
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Catalog imported
30 Aug 2026
30 Aug 2026
Listed strengths
No pros listed yet
No pros listed yet
Listed limitations
No limitations recorded; this does not mean none exist.
No limitations recorded; this does not mean none exist.