MacroFactor

Level 26: Health, Nutrition & Wellbeing

Health & Environment · Level 26

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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.

Company HQRaleigh, United States· Stronger by Science LLC

What is MacroFactor?

MacroFactor is a scientifically grounded nutrition and macro tracking application designed to dynamically estimate an individual's daily energy expenditure. Unlike traditional calorie counters that rely on static formulas and arbitrary activity multipliers, MacroFactor constantly adapts calorie and macro targets based on actual daily body weight trends and logged food intake. This ensures highly personalized adjustments that reflect real-world metabolic responses over time.

A core philosophy of MacroFactor is its adherence-neutral design principles. The app intentionally avoids red warning text, streak penalties, or shaming mechanics when users exceed or fall short of their daily targets. Instead, off-target days are processed neutrally as valuable data points, allowing the algorithm to adjust upcoming weekly check-ins accurately without imposing guilt on the user.

In addition to its adaptive coaching algorithm, MacroFactor features a streamlined food logging ecosystem built for maximum efficiency. Users can log meals rapidly via barcode scanning, voice recognition, and a verified global database. Designed for fat loss, muscle gain, or weight maintenance, MacroFactor offers an evidence-based toolkit tailored for athletes and fitness enthusiasts.

Core features & strengths

  • Dynamic Expenditure Algorithm — Continuously estimates daily energy expenditure by analyzing changes in body weight relative to logged calorie intake, delivering personalized weekly macro updates.
  • Adherence-Neutral Coaching — Tracks nutrition without judgement, streaks, or penalties. Missing targets is treated purely as informative data to optimize future dietary recommendations.
  • Ultra-Fast Food Logging — Accelerates daily food tracking with barcode scanning, custom recipe tools, and smart search capabilities designed to minimize friction.

Who is this tool for?

Fitness enthusiasts, bodybuilders, endurance athletes, and data-driven individuals looking for an evidence-based diet tool without emotional shaming mechanics.

Typical use case

A competitive athlete aims to cut body fat ahead of a season without sacrificing lean muscle or suffering from metabolic guesswork. By logging daily meals and morning weights, the user relies on MacroFactor's weekly check-ins to monitor true energy expenditure. When weight loss slows down, the algorithm automatically adjusts calorie targets downward, and if a social event causes an over-budget intake, the app seamlessly incorporates the data into the next check-in without penalizing the user.

What is MacroFactor good for?

  • Fitness enthusiasts, bodybuilders, endurance athletes, and data-driven individuals looking for an evidence-based diet tool without emotional shaming mechanics.
  • A competitive athlete aims to cut body fat ahead of a season without sacrificing lean muscle or suffering from metabolic guesswork.
  • Dynamic Expenditure Algorithm: Continuously estimates daily energy expenditure by analyzing changes in body weight relative to logged calorie intake, delivering personalized weekly macro updates.
  • Adherence-Neutral Coaching: Tracks nutrition without judgement, streaks, or penalties. Missing targets is treated purely as informative data to optimize future dietary recommendations.
  • Ultra-Fast Food Logging: Accelerates daily food tracking with barcode scanning, custom recipe tools, and smart search capabilities designed to minimize friction.

When a different tool fits better

Not recommended for individuals with a history of eating disorders or disordered eating habits, or for users seeking a completely free food logging application.

Pricing & plans

MacroFactor operates exclusively on a subscription-based model following a limited free trial.Paid

Supported languages

DEGerman — fully supportedENEnglish — fully supported

User interface and knowledge base are fully localized in German.

Interface = the tool's menu language, content = the language you can work in. Without guarantee — vendors keep expanding their language coverage.

Privacy & GDPR

US-Anbieter (Stronger by Science). Werbefreies Abo-Modell ohne Datenverkauf; Verarbeitung in den USA, DSGVO über SCC.

Fact sheet

Fact sheet with the key data
VendorStronger by Science LLC
HeadquartersRaleigh, United States
CategoryNutrition & Supplements
Pyramid levelLevel 26 – Health, Nutrition & Wellbeing
Pricing modelPaid
Free forever optionNo
Open SourceNo
Entry planMonthly: 11.99 $ (11.15 €)
Germaninterface and content
Englishinterface and content
Additional languages3
Privacy classificationUS Cloud
Data processing agreementTargeted at individual consumers, MacroFactor does not officially maintain enterprise DPAs or bespoke EU standard contractual clause packages.

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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Frequently asked questions

How much does MacroFactor cost?

MacroFactor operates exclusively on a subscription-based model following a limited free trial. Current plans: Monthly: 11.99 $ (11.15 €); 6-Month: 47.99 $ (44.63 €); Yearly: 71.99 $ (66.95 €).

Is MacroFactor free?

No. MacroFactor is a paid product; there is no permanently free option. 7-day free trial required to start. No perpetual free tier available.

Does MacroFactor support German?

Yes. MacroFactor offers a German interface and German content. Additional languages: French, Italian, Spanish. User interface and knowledge base are fully localized in German.

How does MacroFactor handle data privacy?

Logged nutrition and weight metrics are processed and hosted on cloud servers located in the United States. Data is aggregated and anonymized to refine internal metabolic algorithms, but personal entries are not sold to third parties or used for external AI model training. Log your meals and weight metrics freely, but avoid entering protected health information or unnecessary personal identifiers.

Who is behind MacroFactor?

MacroFactor is operated by Stronger by Science LLC, headquartered in Raleigh, United States.

Where does MacroFactor sit in the AI Tool Pyramid?

MacroFactor sits on level 26 (“Health, Nutrition & Wellbeing”) and belongs to the Nutrition & Supplements category. Levels group tools by topic and are not a ranking.

Is MacroFactor GDPR-compliant?

MacroFactor processes data mainly outside the EU, usually in the United States. GDPR-compliant use is possible but requires a data processing agreement, suitable safeguards for the third-country transfer and a case-by-case review.

What are alternatives to MacroFactor?

Comparable tools in the same category are Cara Care, Endel, Foodvisor, Lifesum. They differ mainly in pricing model, company location and data protection level, so a direct comparison is worthwhile before deciding.