Report updated May 19, 2026
BMI Calculator
For individuals and parents monitoring weight and health metrics who require support for multiple international measurement standards.
BMI Calculator is an established health & fitness app that is free with in-app purchases. With a 4.7/5 rating from 159.1K reviews, it shows polarized user reception.
What is BMI Calculator?
BMI Calculator is a health utility app for iOS and Android that provides weight-based health metrics using international classification standards.
Users hire this app for quick, offline-accessible health screening that avoids the complexity and data-entry demands of full-scale diet trackers.
Current Momentum
v2.0 · 4d ago
Intense- Fixed measurement unit reset bug.
- Ships minor usability improvements.
Active Nemesis
BMI Calculator – Weight Loss
By Steffen Mayer
Other Rivals
7-Day Rank Pulse 🇺🇸
Health & FitnessNo ranking data
Rating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Toggle between WHO and DGE German Nutrition Society standards for BMI evaluation
Calculates BMI for children ages 7 and up using specialized growth metrics
Real-time color-coded feedback on BMI status via animated UI element
How much does it cost?
- Free version with ad support
Ad-supported model monetizes 5 million+ installs via high-volume display inventory.
Who Built It?
Elshan Aliyev
Providing high-utility Android tools and productivity applications designed for streamlined daily task management and system optimization.
Portfolio
13
Apps
What other apps does Elshan Aliyev make?
Explore the full Elshan Aliyev report
Portfolio breakdown, audience, momentum, and every app published by Elshan Aliyev.
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for BMI Calculator?
How's The Health & Fitness Market?
How does it evolve in the Health & Fitness market?
The app maintains a high 4.69 rating across 159,079 total ratings, though it currently sits at #92 in the US Health & Fitness category. The gap between its high user satisfaction and its sub-100 chart rank signals that while the utility is effective, it lacks the retention loops to maintain top-tier visibility.
Rank progression
45 active rankings tracked — 30-day window
Which niche is BMI Calculator in?
Explore the full Nutrition Calculators niche
Every app in this space — 7 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
This app competes directly by providing specialized clinical nutritional calculations, targeting the same health-conscious and medical-adjacent user base that requires precise body metrics.
Contenders(2)
This app targets the same wellness-focused demographic by attempting to model long-term health outcomes based on lifestyle inputs.
This app competes by offering granular nutritional database access, appealing to users who want to move beyond simple BMI tracking into detailed dietary management.
Same space(4)
This app competes by providing a high-touch, human-centric approach to nutrition and fitness tracking that builds strong user loyalty.
SuperLiving competes by offering a full-service wellness ecosystem that includes meal tracking and fitness courses, challenging the target app's utility.
This app competes by offering localized, condition-specific diet management that addresses the weight loss goals of the target app's users.
Bevel competes by positioning itself as a comprehensive AI-driven health companion that integrates deeper health data than a standalone BMI calculator.
New entrants(1)
This newcomer disrupts the space by using AI to automate the most tedious parts of health tracking, such as photo-based nutrition logging.
Compare BMI Calculator against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for BMI Calculator
Strengths to defend, gaps to attack
Core Strengths
- Multi-system classification (WHO/DGE) expands addressable market in DACH region
- Offline-first architecture ensures utility in low-connectivity environments
- Age-specific growth charts capture the parent-user segment
Critical Frictions
- Manual data entry creates high friction compared to automated trackers
- Lack of long-term retention loops leads to single-use churn
- No wearable integration limits data accuracy
Growth Levers
- Integrate wearable data to automate BMI updates
- Add pregnancy-specific tracking to expand the health-monitoring lifecycle
- Implement cloud-sync for cross-device preference persistence
Market Threats
- AI-powered food trackers reduce manual entry friction
- Established weight-loss platforms offer deeper value
- High-frequency update cycles from rivals erode utility-app relevance
What are the next best moves?
Integrate wearable data because manual entry is the top friction point → increase daily active users
Competitors like Welltory use biometric aggregation to provide deeper value than manual BMI entry.
Trade-off: Pause the DGE classification localization update — wearable integration has a higher impact on retention.
Ship cloud-sync because preference persistence is a common utility requirement → reduce churn on new device setup
Settings persistence is currently local-only, limiting the app's utility for multi-device users.
Trade-off: Delay the UI gauge animation polish — cloud-sync provides more functional value.
A counter-intuitive read
The app's offline-first design is a liability, not an asset, because it prevents the data-syncing and community-engagement loops that modern health-conscious users expect from their primary tracking tools.
Feature Gaps vs Competitors
- Wearable data integration (available in Welltory but absent here)
- Automated food logging (available in Appediet but absent here)
Key Takeaways
BMI Calculator maintains a strong utility base through specialized international standards, but its reliance on manual input leaves it exposed to automated competitors, so the PM should prioritize wearable integration to transition from a one-off tool to a persistent health tracker.
Where Is It Heading?
Mixed Signals
The health-tracking market is consolidating around automated, AI-driven platforms that minimize user effort. BMI Calculator remains a stable utility, but its lack of automation makes it vulnerable to losing users to competitors that integrate with wearables and food databases.
Manual data entry requirements create high friction, which accelerates user churn compared to automated tracking competitors.
Support for DGE German Nutrition Society standards provides a defensible niche in the DACH market that broader trackers ignore.