Free
Free
Homepage invites users to download for free on iPhone and Apple Watch.
- Access
- Homepage invites users to download for free on iPhone and Apple Watch.
Flex AI
● Identity checkedAssistant · Vendor site 2026-10-04
Flex AI is a free gym app with an on-device personal trainer named Lex that generates workouts from training history, goals, and equipment. It adds AI form feedback, automatic progressive overload, Apple Watch logging, social sharing, and recovery tracking for lifters.
- Category
- Assistant
- Free access
- Homepage invites users to download for free on iPhone and Apple Watch.
- API access
- Not confirmed
Is Flex AI right for you?
A good fit for
Gym-goers and trainers who want adaptive AI workout planning, form cues, and progression without spreadsheet templates.
Before you choose
Marketing emphasizes mobile app download; no web-published monthly USD subscription tiers were visible on flexfitnessapp.com.
AI personal trainer app
Flex AI combines conversational workout planning, form feedback, and automatic overload tracking in a free mobile lifting app.
What it can do
Features & capabilities
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| Workout generation | Copy describes fully personalized AI workouts based on history, recovery, goals, and performance. | Facts sourced | 2026-10-04 |
| Form feedback | Site highlights real-time AI form correction on lifts to refine technique. | Facts sourced | 2026-10-04 |
| Progression | Auto Progression feature adjusts weight or reps based on logged results. | Facts sourced | 2026-10-04 |
Understand the total cost
Flex AI pricing & plans
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Explore toolThe practical questions
Frequently asked questions
What is Flex AI used for?
Flex AI is a free gym app with an on-device personal trainer named Lex that generates workouts from training history, goals, and equipment. It adds AI form feedback, automatic progressive overload, Apple Watch logging, social sharing, and recovery tracking for lifters.
Does Flex AI have a free plan?
Homepage invites users to download for free on iPhone and Apple Watch.. This record lists ongoing free access; check the plan limits before starting.
How much does Flex AI cost?
No paid monthly price is listed; this record treats the product as free to start. See the plan cards for entitlements, billing commitments and seat minimums.
Can I use Flex AI through an API?
Not confirmed. API access and subscription access may have different terms; consult the linked sources.
What should I check before choosing it?
Marketing emphasizes mobile app download; no web-published monthly USD subscription tiers were visible on flexfitnessapp.com.
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
How this profile is supported
Identity and profile
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.