Natural language
to structured workout data

Your users say "did 3x12 pushups" — you get clean JSON.
No regex. No edge cases. No maintenance.

See Live Demo Request Access

From chaos to structure in one API call

Handle the messiest user input with confidence

❌ WITHOUT REPPIE
"DB curls"
"single-arm rows"
"5x5 squats, went heavy"
"core finisher 30s on 10s off"
→ Endless regex rules
→ Fragile parsing logic
→ Constant maintenance
→ Poor user experience
✅ WITH REPPIE
{
  "exercises": [
    {
      "exercise": "Dumbbell Curl",
      "sets": 3,
      "reps": 12,
      "per_side": true
    }
  ]
}
→ One API call
→ Consistent JSON schema
→ Zero maintenance
→ Users log naturally

Try it yourself

Click any example to see how Reppie parses natural language

UNILATERAL MOVEMENT
3 sets of 12 dumbbell curls per arm
SUPERSETS
4x8 DB curls, superset w/ tri ext
NATURAL LANGUAGE
squats 5 by 5, went heavy
INTERVALS
plank 30s rest 10s repeat x6
HANDLES TYPOS
3x10 bech press, 2x12 dumbell flyes
COMPLEX WORKOUT
bench 3x10, incline db press 3x12
STRUCTURED JSON RESPONSE

                    

                

            

        

    


    
    

        

            

                

                    Why developers choose Reppie
                

                

                    Stop building parsing infrastructure. Start shipping features.
                

            


            

                

                    

                        
                            
                        
                    

                    
Ship Faster

                    
Skip months of parsing logic. One API integration and you're done.

                


                

                    

                        
                            
                        
                    

                    
Better UX

                    
Users log workouts naturally. No more rigid forms or dropdowns.

                


                

                    

                        
                            
                        
                    

                    
Zero Maintenance

                    
We handle edge cases, aliases, and updates. You focus on your app.

                


                

                    

                        
                            
                        
                    

                    
Consistent Data

                    
Clean JSON schemas. Perfect for analytics, storage, and display.

                

            

        

    


    
    

        

            

                

                    Built for modern fitness apps
                

            


            

                

                    

                        
                            
                        
                    

                    
Fitness & Habit Trackers

                    

                        Let users log workouts naturally instead of fighting dropdown menus and rigid forms.
                    

                


                

                    

                        
                            
                        
                    

                    
Health Platforms

                    

                        Add workout tracking to your wellness app without building complex parsing infrastructure.
                    

                


                

                    

                        
                            
                        
                    

                    
Solo Developers

                    

                        Ship your MVP faster. No more wrestling with regex or maintaining exercise databases.
                    

                

            

        

    



    

      

          

              

                  

                      Get early access
                  

                  

                    Limited spots available - we'll email you within 48 hours with API access and setup instructions.