Marketplace All-in-One What AI fitness apps can and can't do — for now
Feb 4, 2026
Nicole Nguyen, a Wall Street Journal personal tech columnist who reviews consumer tech and AI in fitness apps. She walks through trials of Apple’s Workout Buddy, Fitbit’s AI coach, and Peloton’s form-tracking camera. Short takes cover form correction, frustrating hallucinations and rep counting, higher subscription costs, and where nutrition and form AI may head next.
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AI Is Woven Into Many Fitness Tools
- AI is now embedded across fitness apps from chatbots to camera-based form tracking.
- These features offer different value: motivation, workout creation, and form correction.
Peloton Helped Her Learn Strength Training
- Nicole Nguyen favored Peloton for strength training because its form correction helped her learn technique.
- She noted Peloton is expensive due to hardware cost plus a monthly subscription.
Prepare For AI Hallucinations And Friction
- Expect glitches from generative features and be prepared to tolerate occasional errors.
- Avoid relying solely on new AI features if you aren't comfortable troubleshooting issues.