# The Difference vs FoodGem

The clearest difference is device support: FoodGem at 3 against The Difference's 1. FoodGem also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. The Difference sells 2 in-app purchases, starting at $4.99 per month and FoodGem sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | The Difference | FoodGem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (143 ratings)](https://appshunter.io/ios/app/the-difference-predict-weight/id1615639219/reviews)** | — |
| Number of ratings | **143** | — |
| Positive reviews | 99.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Freemium | — |
| Size | 40 MB | 47 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The Difference App LLC](https://appshunter.io/developer/1615639221) | [Hesham Zakaria](https://appshunter.io/developer/1876612237) |

## What reviewers say

### The Difference

[App page](https://appshunter.io/ios/app/the-difference-predict-weight/id1615639219)

This app helps you manage your weight by predicting your estimated weight change daily. It uses your food journal and activity log to provide personalized insights and a "True Burn" calculation for more accurate predictions. The longer you use it, the better it becomes at forecasting your weight.

**Highlights:** Daily weight change prediction, Personalized True Burn calculation, Extensive food database, Comprehensive activity logging, Simple and intuitive interface, Daily email and SMS results

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $24.99 | per year |

**What reviewers like**

- 👍 Intuitive and easy-to-use interface
- 💡 Innovative weight prediction feature
- 📊 Accurate calorie tracking and database
- 🎯 Effective for weight loss and management
- ⚡ Simple and streamlined design

**What reviewers complain about**

- 🎨 Graphics and design feel cheap or outdated
- ⏳ Time-consuming food input process
- ❓ Inaccurate calorie calculations reported
- 💳 Limited subscription benefits

**Reported bugs**

- Inaccurate calorie and intake level calculations
- Graphics quality issues

**Requested features**

- Improved graphics and modern design overhaul
- Faster food logging process
- Enhanced subscription tier benefits
- Dark mode option


### FoodGem

[App page](https://appshunter.io/ios/app/foodgem-ai-kitchen-assistant/id6759063784)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FoodGem Premium Monthly | $4.99 | per month |
| FoodGem Master Monthly | $9.99 | per month |
| FoodGem Premium Yearly | $49.99 | per year |
| FoodGem Master Yearly | $99.99 | per year |


## Frequently asked questions

### Is The Difference free?

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

### Is FoodGem free?

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

### Do The Difference or FoodGem have ads?

Neither The Difference nor FoodGem shows ads.

### Which is updated more often, The Difference or FoodGem?

The Difference ships an update monthly, and FoodGem monthly. Most recently, The Difference was updated on November 7, 2026 and FoodGem on November 5, 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.*