Rubric.Fit
Your Metabolic Auditor
Only for iPhone
Free · Designed for iPhone
iPhone
Rubric is a health tracking app that treats your data like an official record — not a game.
Photograph your meals. Rubric's AI identifies what you're eating and estimates the nutrition. Adjust with physical dials if something's off. That's it. No barcode scanning, no database searching, no typing "1/2 cup brown rice" into a text field.
A daily score tells you where you stand. The Rubric Score combines your nutrition, activity, and sleep into a single number — calculated by formula, not vibes. You can see exactly how it's computed. There's no mystery, no algorithm that rewards you for opening the app.
Set behavioral protocols — commitments you make to yourself with specific, measurable rules. "At least 7 hours of sleep." "Under 2,200 calories." Rubric tracks whether you kept them. It doesn't celebrate when you do or guilt you when you don't. It just writes it down.
The AI Coach answers questions about your data. Ask why your score dropped, what to eat before a workout, or how your week compares to last week. The Coach has access to your full history but only pulls what it needs. It gives you information, not motivation.
A weekly transcript arrives every Sunday — a thermal-receipt-style PDF summarizing your performance, flagging material deviations, and grading your week. It reads like an audit report because that's what it is.
WHAT RUBRIC TRACKS
Meals — photo or text, with AI-estimated calories and macros
Activity — synced automatically from Apple Health
Sleep — duration and stages from Apple Health
Weight — from Apple Health or manual entry
Protocols — custom behavioral rules you define and attest to daily
WHAT RUBRIC DOES NOT DO
No streaks or badges
No social features or leaderboards
No ads, ever
No selling your health data
No medical advice
Rubric syncs with Apple Health for steps, active calories, workouts, sleep, heart rate, and weight. Your biometric data stays on your device and in your secured account. Photos are processed by AI for nutrition analysis and then discarded.
Built for people who want to know the truth about their habits — not be congratulated for logging breakfast.
HEALTH & NUTRITION INFORMATION
Calorie and macronutrient targets are estimates calculated using the Mifflin-St Jeor equation, a peer-reviewed formula for predicting basal metabolic rate (Mifflin et al., American Journal of Clinical Nutrition, 1990). Nutritional estimates from meal photos are AI-generated approximations and may be incomplete or inaccurate. AI coaching responses are automated suggestions based on your logged data, not clinical recommendations. Sources and methodology are documented within the app under Settings > Sources & Methodology.
Rubric is designed to help you track health data and build consistent habits. It is not a medical device and does not provide medical diagnoses, treatment recommendations, or clinical advice. All estimates, scores, and coaching responses are for informational purposes only. Always consult a qualified healthcare professional before making changes to your diet or health regimen.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
Fixed a crash that occurred when photographing non-food items. Improved stability of the nutrition logging flow on all screen sizes.
The developer, STUART ANTHONY SHOWALTER, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- STUART ANTHONY SHOWALTER
- Size
- 56.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- Languages
- English
- Age Rating
16+
- 16+
- Frequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Bolewood Group, LLC