# BMI Calculator vs Smart Weight Tracker

The clearest difference is in-app purchases: Smart Weight Tracker at none against BMI Calculator's 1. Smart Weight Tracker also leads on update cadence (every 3 days vs every 13 months) and review sentiment (100% vs 83%). BMI Calculator's advantage is ratings volume (374 vs 2) and iOS requirement (11.0 vs 16.6). On price, rating, ads and device support there is nothing between them.

Both are free to download. BMI Calculator sells 1 one-off in-app purchase. Smart Weight Tracker asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for BMI Calculator against 5.0 for Smart Weight Tracker. That said, the two scores are not equally well evidenced: BMI Calculator has 374 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 83% of BMI Calculator's written reviews are positive against 100% of Smart Weight Tracker's.

BMI Calculator ships an update every 13 months, Smart Weight Tracker every 3 days. The most recent releases landed on September 23, 2026 and July 17, 2026 respectively.

## The numbers

| Metric | BMI Calculator | Smart Weight Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (374 ratings)](https://appshunter.io/ios/app/bmi-calculator-weight-tracker/id1572432663/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/smart-weight-tracker/id6748303572/reviews)** |
| Number of ratings | **374** | 2 |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 13 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 37 MB | 9 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Leap Health](https://appshunter.io/developer/1687598595) | [MATRIKS GRUP, TOV](https://appshunter.io/developer/1457004046) |

## What reviewers say

### BMI Calculator

[App page](https://appshunter.io/ios/app/bmi-calculator-weight-tracker/id1572432663)

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.

**Highlights:** Calculate BMI scientifically, Find ideal weight, Log BMI history, Track health progress, Sync data to Apple Health, Metric and imperial support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 👍 Easy to use and understand
- ✅ Accurate BMI calculation
- 📈 Helpful for tracking weight
- 😊 Improves self-esteem
- ✨ Pleasant visual design

**What reviewers complain about**

- 🤔 Discrepancy with doctor's advice
- ⚠️ Can cause insecurity about weight
- 📉 Graph scale not ideal for weight loss
- 🚫 Ads can be intrusive
- 🤷‍♀️ Some users disagree with weight categorization

**Reported bugs**

- 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**

- 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


### Smart Weight Tracker

[App page](https://appshunter.io/ios/app/smart-weight-tracker/id6748303572)

This app helps you manage your weight and track daily calories with smart tools. It offers personalized goals, progress visualization, and reminders to keep you on track. Features include a BMI calculator, calorie monitoring, and camera integration for food estimates.

**Highlights:** Smart BMI calculator with visualizations, Daily weight tracking and progress charts, Calorie intake and expenditure monitoring, Personalized weight goals and recommendations, Progress visualization with charts and graphs, Smart reminders for weigh-ins, Camera integration for AI calorie estimates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BMI Calculator free?

BMI Calculator is free to download, with in-app purchases available.

### Is Smart Weight Tracker free?

Smart Weight Tracker is free to download, with no in-app purchases.

### Which has better reviews, BMI Calculator or Smart Weight Tracker?

Smart Weight Tracker is rated higher. BMI Calculator averages 4.9 out of 5 from 374 ratings, while Smart Weight Tracker averages 5.0 from 2 ratings.

### Do BMI Calculator or Smart Weight Tracker have ads?

Both BMI Calculator and Smart Weight Tracker show ads.

### Which is updated more often, BMI Calculator or Smart Weight Tracker?

BMI Calculator ships an update every 13 months, and Smart Weight Tracker every 3 days. Most recently, BMI Calculator was updated on September 23, 2026 and Smart Weight Tracker on July 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*