William Rubin

Known for

Calsense - AI Macro Tracker

1app5.0(2)

Active nemesis

HealthVida GmbH & Co. KG.

Other rivals

Publisher DNA

AI intelligence is not yet available for William Rubin. The portfolio data below is up to date.

Portfolio

Apps

1 app analysed

Sort by

Calsense - AI Macro Tracker

5.0(2)

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Private account structure ensures data security

AI-driven photo analysis reduces logging friction
Subscription-only model limits top-of-funnel conversion

Single-market publisher — every app ships only to United States.

Based on 1 of 1 app with localized market data · last scanned May 2026.

Americas (1)

United States

User sentiment

User-sentiment analysis coming soon.

Rivals

The rivals identified

Nemeses(1)

HealthVida GmbH & Co. KG.

known forFastic Weight Loss & Fasting

1 app

So what?

Strategic outlook coming soon.

Frequently asked questions

How many apps does William Rubin publish?

William Rubin has 1 app tracked by Marlvel, primarily in the Health & Fitness category.

What kind of apps does William Rubin make?

William Rubin's portfolio is concentrated in Health & Fitness, with an average rating of 5.0/5 across rated apps.

app

Health & Fitness1

Last updated

Calsense - AI Macro Tracker

v1.24

1mo ago

Core markets (1/1 apps)

United States

Fastic directly competes by combining AI-driven nutritional analysis with fasting protocols, targeting the same user base looking for effortless weight management.

Contenders(4)

ABD Co.

known forbloated ai

1 appHealth & Fitness

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Bloated AI competes by using specialized AI to solve a specific symptom-based pain point: digestive discomfort and bloating.

Daybreaker Health

known forDaybreaker Health Mobile App

1 app5.0Health & Fitness

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This app competes by shifting the focus from simple calorie counting to advanced biomarker tracking and longevity protocols.

Jommi UG (haftungsbeschrankt)

known forCalorieGuide Food Nutrition Facts Calculator for Fresh Produce & Healthy Diet Living

2 apps3.5Health & Fitness

Roman Kuryanov

known forRoman: budget weight loss

1 app5.0Health & Fitness

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Same space(2)

Henrik Duer

known forSund med Duer

1 app5.0Health & Fitness

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This app provides a holistic health ecosystem including mental health and community support alongside nutrition.

younes ahmed

known forبرامج رجيم

2 apps5.0Health & Fitness

New entrants(2)

Andy Arevalo

known forKickoff: Weight Loss & Fitness

1 app0.0Health & Fitness

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Kickoff introduces social accountability and team-based modes to the weight loss tracking category.

MAURINUS STANDER

known forLabelScan Ai

1 app0.0Health & Fitness

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What is William Rubin's top app?

Based on user sentiment and following across the portfolio, Calsense - AI Macro Tracker stands out as William Rubin's flagship app tracked by Marlvel.

In how many countries are William Rubin's apps available?

Marlvel has tracked William Rubin's apps across 1 country.

This app acts as a reference tool for nutritional data, competing for users who need quick information on fresh produce.

Roman targets the price-conscious demographic by offering personalized meal plans and budget-focused nutrition advice.

This app serves the same regional market by offering a library of dietary programs and weight loss recipes.

LabelScan AI uses computer vision to detect additives and allergens, competing on health safety rather than just macros.

Snapshot

Publisher DNA

Portfolio

Apps

Americas (1)

User sentiment

Rivals

The rivals identified

Nemeses(1)

So what?

Frequently asked questions

Core markets (1/1 apps)

Contenders(4)

Same space(2)

New entrants(2)