# Protokl

> Science-backed fitness app that builds personalized workout and nutrition plans around your body composition, goals, and experience level.

Protokl is an iOS fitness application that integrates AI-powered meal analysis, body composition forecasting, and adaptive workout programming into a single training protocol. It syncs with Apple Health to track metrics from steps and sleep to heart rate and VO2 max, then uses proprietary forecasting algorithms grounded in published physiological research to project actual fitness trends.

## Core Features

- AI-powered meal photo analysis (Gemini Vision)
- Body composition forecasting using Aragon muscle gain rates, Alpert fat oxidation limits, and Forbes P-ratio partitioning
- Adaptive TDEE modeling with obligate, facultative, and TEF components
- Personalized workout programming based on training experience level
- Apple Health integration for 50+ health data types
- Goal modes: Muscle Gain, Fat Loss, Body Recomposition

## Free Tools

- [Cut Calculator](https://protokl.app/tools/cut-calculator): Calculate personalized cutting calories, macros, and timeline using Mifflin-St Jeor and Alpert limit
- [Macro Calculator](https://protokl.app/tools/macro-calculator): Calculate daily macros for cutting, bulking, recomp, or maintenance

## Documentation

- [Forecast Methodology](https://protokl.app/forecast-methodology): Full research-backed methodology for the body composition forecasting engine
- [Privacy Policy](https://protokl.app/privacy)
- [Terms of Service](https://protokl.app/terms)

## Blog

- [Best AI Workout Generator Apps in 2026](https://protokl.app/blog/best-ai-workout-generator-app)
- [How to Build a Cut Protocol That Actually Works](https://protokl.app/blog/how-to-build-a-cut-protocol)
- [MyFitnessPal Alternatives in 2026](https://protokl.app/blog/myfitnesspal-alternatives-2026)

## Key Facts

- Platform: iOS (App Store)
- App Store ID: 6752530131
- Pricing: Free tier + premium subscription
- Data storage: Local on-device (encrypted), no cloud storage of health data
- HealthKit data: NOT used for advertising, NOT shared with third parties, NOT sold
- Forecasting: Deterministic model running entirely on-device
- Contact: protoklapp@gmail.com
- Developer: Ryan Luther
- Location: Alberta, Canada