AgentsAbout Agents4 Fitness
Agents4 Fitness is a personal AI fitness-coaching app. Members choose one of 115 specialist AI coaches and get a complete training plan and nutrition plan that the coach keeps adjusting: in chat, from check-ins, and from Apple Health or Health Connect recovery data. Coach subscriptions start at $15.99 a month.
Facts at a glance
- What it is: a consumer app for people who train, built on a platform that turns coaching methodologies into AI agents. Each coach is built on a specialist methodology — a weekly training split, how load goes up, deload rules, a nutrition strategy and safety limits — that it applies by rule.
- Coaches: 115 specialists in 11 goal categories — fat loss and metabolic health, strength, women's health, longevity, endurance, sport-specific training, health conditions and more. Browse all 115.
- Price: a free account; each coach is a month-to-month subscription from $15.99 to $29.99, cancel anytime. One subscription covers the training plan, the nutrition plan, 24/7 chat that edits the plan, daily check-ins and progress tracking.
- Where it runs: iPhone, Android and the web at app.agents4fitness.com.
- Health data: Apple Health and Health Connect (sleep, heart-rate variability, resting heart rate, steps)). A low-recovery morning makes that day's session lighter.
- Methodology first: the platform turns a coaching methodology into an agent, and coaches can build agents from their own. The 115 marketplace coaches' methodologies were written by the Agents4 Fitness team with AI assistance. How the coaches are built and checked.
- Not medical advice: coaches do not diagnose, treat or change medication; coaches for health conditions work inside the limits a member's clinician sets.
- For human coaches (coming soon): a platform to put a coach's own methodology behind an agent, with Full Auto or review modes per client; publishing to the marketplace pays the coach 80% of each subscription.
What a coach does
A coach writes your first week and menu from its programme and your intake — goal, experience, training days, equipment, injuries, food allergies versus preferences, and how much you cook. After that it works on the same plan rather than producing new text each time: it rebuilds a travel week around a hotel gym, swaps an exercise for a sore knee and carries the change forward, re-portions the rest of the day when a meal is skipped, writes a deload week when you ask for one, and confirms every change in the chat.
The company
Agents4 Fitness is operated by Agents4 Fitness LLC. The app's chat runs on Google's Gemini models on Vertex AI; payments are processed by Stripe.
Official profiles
About the name
Agents4 Fitness (agents4fitness.com) is not affiliated with Replit's "Agent 4", the Agent4 voice-agent company, Agents4Future, or other products with similar names.
All 115 coaches · How our coaches are built · Comparisons · How Agents4 Fitness works