BMI Calculator vs OxynAi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BMI Calculator
Calculate your Body Mass Index (BMI) using age, gender, height, and weight. Track your health progress, find your ideal weight, and receive tips for weight control. Supports metric and imperial units and syncs with Apple Health.
- Calculate BMI scientifically
- Find ideal weight
- Log BMI history
- Track health progress
- Sync data to Apple Health
- Metric and imperial support
Read full descriptionHide full description
With this free BMI Calculator, you can calculate and evaluate your BMI (Body Mass Index) simply by entering age, gender, height and weight. It supports metric or imperial and is designed based on the WHO BMI classification. What You Can Do: - Calculate your BMI scientifically - Find your ideal weight & Get professional tips - Log your BMI history & Track your health progress - For everyone! Adults, teens, and children - Sync data to Apple Health Being overweight or obese increases the risk of obesity-related diseases, such as hypertension, heart disease and diabetes. It’s time to find your ideal weight. You can also use it to check your diet or weight loss effect. Why You Need It: Wanna know your BMI and weight changes at a glance? Want to prevent obesity-related diseases? Wish to know tips to reach an optimal weight? Look for a BMI calculator for your children? Download our app now as a useful starting point for your weight control and health improvement. Medical Disclaimer BMI Calculator: Weight Tracker shall not be treated as a professional medical service provider. Service does not substitute diagnosis, professional treatment, or medical advice from healthcare professionals. If you have experienced any medical conditions, please consult your doctor. Service is for educational and informational purposes only. You are completely aware that the information and data provided may not be accurate, secure, or comprehensive. Due to individual differences, Service is not available to everyone. Please request your doctor to access your suitability for Service. You confirm that you are fully responsible for your safety and health. BMI Calculator: Weight Tracker shall not be liable for any damage or loss in respect of any access or use of Service.
OxynAi
Read full descriptionHide full description
Oxyn is your AI-powered bilingual personal trainer and fitness tracking companion built to help you reach your physique goals with precision. Whether you are looking to build muscle, lose body fat, or track your progressive overload, Oxyn provides instant smart guidance adapted to your workout history and physical stats. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ KEY FEATURES: • AI Fitness Coach: Get personalized exercise advice, form feedback, and routine suggestions powered by advanced AI tuned to your actual workout progress and streaks. • Exercise & Food Scanning: Instantly identify equipment, exercises, and meals with smart camera identification. • Science-Based Workout Tracking: Log sets, reps, weight, and track progressive overload seamlessly. • Interactive Muscle Diagrams: Visualize targeted muscle groups in real-time across your workout routines. • Flexible Bilingual Experience: Full native support for both English and Arabic. • Premium AI Features: Access advanced AI coaching insights and meal scanning with options for weekly, monthly, or yearly subscriptions. Start your fitness journey today with Oxyn and take the guesswork out of training.
Screenshots
Verdict
The clearest difference is ads: OxynAi at none against BMI Calculator's shown. OxynAi also leads on update cadence (every 3 weeks vs every 13 months). BMI Calculator's advantage is iOS requirement (11.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. BMI Calculator sells 1 one-off in-app purchase and OxynAi sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.
BMI Calculator ships an update every 13 months, OxynAi every 3 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | BMI Calculator | OxynAi |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (376 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 376 — better | — |
| Update frequency | Every 13 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 37 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Leap Health | Elshifa Salih |
Bugs and requests
BMI Calculator
Reported bugs
4 issues- App crashes when entering decimal weight
- App crashes when entering second day's weight
- App crashes when pressing the 'day' button
- App crashes on second day's input
Requested features
5 requests- Add messages and tips for different weight categories (underweight, overweight, obese)
- Implement dark mode
- Allow data storage for multiple users
- Adjust graph scale for better visibility of weight loss
- Allow input of decimal numbers for weight
OxynAi
Not enough reviews yet to summarise bugs or requests.
In-app purchases
BMI Calculator
- Remove Ads$2.99
OxynAi
- Oxyn Premium Weekly$5.997 Days
- Oxyn Premium Monthly7 Days trial$12.991 Month
- Oxyn Premium Yearly14 Days trial$59.991 Year





