MacroFactor
Level 26: Health, Nutrition & Wellbeing
Health & Environment · Level 26
In short
MacroFactor is an AI tool in the Nutrition & Supplements category from Stronger by Science LLC in Raleigh, United States. The pricing model is paid. It is with a German interface.
What is MacroFactor?
MacroFactor is an AI-powered nutrition and goal-tracking application based on the scientific principles of energy balance. Unlike manual tracking apps, MacroFactor dynamically calculates the user's metabolic rate by analyzing body weight changes in relation to daily food intake. The system automatically adjusts recommended calorie and macronutrient targets to ensure progress aligns with the user's specific goals.
The app avoids advertisements and data monetization, ensuring a streamlined and focused user experience. Its design prioritizes efficiency, featuring advanced food search capabilities and barcode scanning to simplify daily logging. By employing an algorithmic approach, the app eliminates the guesswork typically involved in adjusting nutritional plans during fat loss or muscle gain phases.
Data privacy and security are core components of the platform's architecture. MacroFactor does not store personally identifiable data in a way that could be utilized for marketing or third-party tracking. Users maintain full control over their information, with the ability to export or delete their data at any time, making it a professional-grade solution for health-conscious individuals.
Core features & strengths
- Dynamic Coaching — The app analyzes weekly weight and nutrition data to precisely determine the user's actual energy expenditure. Based on these trends, it automatically adjusts daily calorie and macronutrient targets to maintain the desired trajectory.
- Nutrition Journal — A comprehensive logging system facilitates food entry via an extensive database and a fast barcode scanner. It supports complex custom foods and recipe creation for high-precision monitoring.
- Progress Analytics — Detailed dashboards visualize long-term weight trends and nutritional intake. The app uses moving averages to smooth out daily weight fluctuations, providing an objective view of physical progress.
Who is this tool for?
The app is primarily intended for individuals who want to manage their nutrition based on evidence, whether for weight loss, muscle gain, or nutrient tracking. It is ideal for users who prefer a data-driven and largely automated solution over traditional manual logging apps.
Typical use case
A user aims to lose weight safely and sets a target weight with a specific weekly rate in the app. The app establishes an initial caloric plan and begins analyzing daily food consumption alongside morning weigh-ins. After a few days, the algorithm identifies the user's specific metabolic needs and adjusts the targets if the weight loss does not match the planned rate. The user does not need to perform manual tweaks, but simply follows the daily targets until the desired goal is reached.
What is MacroFactor good for?
- The app is primarily intended for individuals who want to manage their nutrition based on evidence, whether for weight loss, muscle gain, or nutrient tracking. It is ideal for users who prefer a data-driven and largely automated solution over traditional manual logging apps.
- A user aims to lose weight safely and sets a target weight with a specific weekly rate in the app.
- Dynamic Coaching: The app analyzes weekly weight and nutrition data to precisely determine the user's actual energy expenditure. Based on these trends, it automatically adjusts daily calorie and macronutrient targets to maintain the desired trajectory.
- Nutrition Journal: A comprehensive logging system facilitates food entry via an extensive database and a fast barcode scanner. It supports complex custom foods and recipe creation for high-precision monitoring.
- Progress Analytics: Detailed dashboards visualize long-term weight trends and nutritional intake. The app uses moving averages to smooth out daily weight fluctuations, providing an objective view of physical progress.
When a different tool fits better
MacroFactor is not suitable for individuals with a history of eating disorders, as the constant focus on calories and weight may be psychologically taxing. Furthermore, it should not be used as a substitute for medical nutrition therapy in cases of serious metabolic or health-related conditions.
Pricing & plans
Plans in detail
- Monthly11.99 $approx. 11.15 €monthly
- Full access to all features
- Ad-free experience
- 6-Month47.99 $approx. 44.63 €every 6 months
- Equivalent to 7.99 $ per month
- Save compared to monthly billing
- Yearly71.99 $approx. 66.95 €yearly
- Equivalent to 5.99 $ per month
- Best value
Good to know
- All subscriptions include a 7-day free trial for new users.
- No permanent free tier available.
Prices checked on 26/09/2026. Prices based on public provider information, without warranty. Euro amounts are approximations; the provider's pricing page prevails.
Supported languages
Interface = the tool's menu language, content = the language you can work in. Without guarantee — vendors keep expanding their language coverage.
Privacy & GDPR
Data flow: Data is processed on Stronger by Science servers in the USA, utilizing Google Cloud and Apple infrastructure standards.
Training on your inputs: User data is not used to train third-party AI models.
For companies: No specific enterprise plan exists; usage is intended for individuals via private subscriptions.
Practical advice: Enter only nutrition and fitness-related data; avoid providing highly sensitive personal information or medical diagnoses.
- GDPR:
- EU data protection regulation: defines how personal data may be processed and what rights you have (access, deletion, objection).
- SCC (Standard Contractual Clauses):
- EU model clauses that let a provider legally process data outside the EU.
- Training on user data:
- Your inputs may feed into future model versions. Confidential content could in theory resurface in other users' answers.
Privacy data checked on 31/08/2026. Editorial summary based on public provider information — not legal advice. When in doubt, check the provider's current privacy terms.
Fact sheet
| Vendor | Stronger by Science LLC |
|---|---|
| Headquarters | Raleigh, United States |
| Category | Nutrition & Supplements |
| Pyramid level | Level 26 – Health, Nutrition & Wellbeing |
| Pricing model | Paid |
| Free forever option | No |
| Open Source | No |
| Entry plan | Monthly: 11.99 $ (approx. 11.15 €) |
| German | interface and content |
| English | interface and content |
| Privacy classification | US Cloud |
| Data processing agreement | No specific enterprise plan exists; usage is intended for individuals via private subscriptions. |
Alternatives to MacroFactor
- Cara Care — Free · HQ: Berlin, Germany · GDPR / EU
- Endel — Freemium · HQ: Berlin, Germany · Unclear
- Foodvisor — Freemium · HQ: Paris, France · GDPR / EU
- Lifesum — Freemium · HQ: Stockholm, Sweden · GDPR / EU
- MyFitnessPal — Freemium · HQ: Austin, United States · GDPR / EU
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