# KidneyDiet vs BMI Calculator by DevTechie

The clearest difference is update cadence: BMI Calculator by DevTechie at every 4 weeks against KidneyDiet's every 3 months. KidneyDiet's advantage is iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. KidneyDiet sells 2 in-app purchases, starting at $7.99 per month and BMI Calculator by DevTechie sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

KidneyDiet ships an update every 3 months, BMI Calculator by DevTechie every 4 weeks. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | KidneyDiet | BMI Calculator by DevTechie |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (311 ratings)](https://appshunter.io/ios/app/kidneydiet/id373471282/reviews)** | — |
| Number of ratings | **311** | — |
| Positive reviews | 63.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Monetization | Freemium | — |
| Size | 297 MB | 1 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Kismetly, Inc.](https://appshunter.io/developer/373471285) | [Anoop tomar](https://appshunter.io/developer/1283062106) |

## What reviewers say

### KidneyDiet

[App page](https://appshunter.io/ios/app/kidneydiet/id373471282)

This app assists individuals with kidney disease in monitoring key nutrients like phosphorus, potassium, and protein. It offers personalized daily guidelines, a comprehensive food database, and detailed nutrient tracking to support informed dietary choices. Users can also log favorite foods and share their progress with healthcare providers.

**Highlights:** Track phosphorus, potassium, and protein, Personalized daily guidelines, Extensive food and nutrient database, Detailed nutrient intake charts, Log favorite foods, Email daily diary

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $7.99 | per month |
| Yearly Subscription | $54.99 | per year |

**What reviewers like**

- ✅ Tracks essential kidney nutrients (phosphorus, potassium, protein)
- 📊 Visual daily totals and progress tracking
- 🔍 Barcode scanner for quick food lookup
- ⭐ Favorites list for frequently eaten foods
- 📧 Email diary feature for sharing with healthcare providers

**What reviewers complain about**

- 🐛 App crashes when viewing nutrition details or adding items
- 🔧 Inconsistent measurement units (grams, ounces, cups)
- 📉 Limited food database compared to competitors
- ❌ Cannot delete items from favorites list
- 🔐 Account creation required before trial

**Reported bugs**

- App crashes when clicking 'see all nutrition' or 'add to diary' buttons
- Barcode scanner not functioning (QR code error)
- Many foods display without portion size options
- Cannot add custom portion sizes for preset foods
- Login and password reset emails not sending

**Requested features**

- Add carbohydrates and cholesterol tracking for diabetic patients
- Allow users to edit saved custom foods
- Ability to delete items from favorites without limitation
- Multi-year subscription discounts
- Recipe builder with automatic nutrient calculation


### BMI Calculator by DevTechie

[App page](https://appshunter.io/ios/app/bmi-calculator-by-devtechie/id6752465975)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BMI Weekly Access | $4.99 | per 7 days |
| BMI Monthly Access | $8.99 | per month |
| BMI Yearly Access | $24.99 | per year |


## Frequently asked questions

### Is KidneyDiet free?

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

### Is BMI Calculator by DevTechie free?

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

### Do KidneyDiet or BMI Calculator by DevTechie have ads?

Neither KidneyDiet nor BMI Calculator by DevTechie shows ads.

### Which is updated more often, KidneyDiet or BMI Calculator by DevTechie?

KidneyDiet ships an update every 3 months, and BMI Calculator by DevTechie every 4 weeks. Most recently, KidneyDiet was updated on September 23, 2026 and BMI Calculator by DevTechie on September 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.*