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Fitness Coach

Track habits.
Talk to your coach.
Transform your routine.
The only fitness tracker that actually listens.

Voice conversations
Semantic memory
Personalized goals
🤖
AI Coach ● Online
How am I doing on my goal?
You're 67% to your goal, losing 1.3 lbs/week. At this pace, you'll hit 175 lbs by March 15th.
📊 Your momentum is RISING:
• 14-day vitamin streak
• Weekend workouts up 23%
• Best pushup day: 85 reps
Ask your coach anything...
🎙️
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Why nLight.fit

AI Coach

Personalized coaching from Grok-4.1 that knows your goals, triggers, and patterns. Get streaming responses with real-time insights and goal projections.

  • Goal progress tracking
  • Trigger analysis
  • Style-matched coaching

Smart Memory

AI learns from every conversation with 5 intelligence layers: decay scoring, effectiveness tracking, confidence calibration, and automatic memory consolidation.

  • Learning decay & relevance
  • Effectiveness tracking
  • Memory consolidation

What you get

📊

Daily Tracking

Weight, workouts, nutrition, habits in a visual calendar view with instant cloud sync.

🤖

AI Coach

xAI Grok-4.1 powered coaching with streaming responses and goal projections.

🎙️

Voice Agent

Natural voice conversations to log your day hands-free with xAI Realtime.

🧠

Context Engine

Temporal awareness and momentum detection that adapts coaching to your state.

📈

Smart Analytics

Trigger analysis, personal records, and correlations across all your data.

🔐

Security

PII encryption, prompt injection defense, rate limiting, and circuit breakers.

🧬

Adaptive Memory

5-layer learning system with decay, effectiveness tracking, and automatic memory consolidation.

🎯

Mission Statement

Structured goal setting with outcome, core goal, deadline, and 3 commitment pillars.

See it in action

👤

What patterns have you noticed in my workouts?

🤖

Looking at your last 30 days, I've found some interesting patterns:

📉 Weekend Dip

Your weekend pushups are 32% lower than weekdays (avg 45 vs 66).

🔥 Morning Wins

When you wake before 7am, workout completion is 89% vs 54%.

💡 Suggestion

Try scheduling Saturday workouts for 8am to capture that morning momentum.

Goal Progress
67%
On track for March 15
Weekly Average
-1.3 lbs
↑ 0.2 lbs vs last month
Current Streak
14 days
🔥 Personal best!
Pushup PR
85 reps
March 15, 2025
Date ⚖️ 💪 🏋️ 🥗
Mon 24 178.2 72 Arms High
Tue 25 177.8 68 Legs High
Wed 26 177.5 75 Core Med
Today

Built on Enterprise-Grade AI Infrastructure

Powered by the most advanced AI and data technologies

xAI Grok-4.1
2M token context
VoyageAI
Semantic embeddings
MongoDB Atlas
Vector search
Vercel
Edge serverless
5-layer adaptive memory
Learning decay & effectiveness
End-to-end encryption
PWA offline support

Simple pricing

Free to track. Upgrade for AI.

Free

$0
  • Unlimited tracking
  • Charts & analytics
  • Custom columns
  • CSV export
Get Started

Ready to transform your routine?

Committing to anything without tracking it is impossible.

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  • Interactive Voice Onboarding
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