# X Factor vs Fuel. Calorie Counter

The clearest difference is in-app purchases: X Factor at none against Fuel. Calorie Counter's 2. X Factor also leads on device support (3 vs 1) and iOS requirement (8.0 vs 26.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Fuel. Calorie Counter sells 2 in-app purchases, starting at $4.99 per month. X Factor asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | X Factor | Fuel. Calorie Counter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/x-factor/id312733909/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free | — |
| Size | 20 MB | 9 MB |
| Requires iOS | **8.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Hansen](https://appshunter.io/developer/312733912) | [Andrew Conlan](https://appshunter.io/developer/588213097) |

## What reviewers say

### X Factor

[App page](https://appshunter.io/ios/app/x-factor/id312733909)

Easily track your daily calorie balance for weight management. Focus on calories in and out, with features to predict target weight achievement and verify data accuracy. Integrates with HealthKit for automatic calorie import.

**Highlights:** Daily calorie balance tracking, Weight and activity calorie logging, Target weight prediction, BMI and BMR calculation, HealthKit integration, Weight unit support

**Features:** macOS Compatibility

**In-app purchases:** none


### Fuel. Calorie Counter

[App page](https://appshunter.io/ios/app/fuel-calorie-counter/id1630973156)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $4.99 | per month |
| Yearly Plan | $29.99 | per year |


## Frequently asked questions

### Is X Factor free?

X Factor is free to download, with no in-app purchases.

### Is Fuel. Calorie Counter free?

Fuel. Calorie Counter is free to download, with in-app purchases available.

### Do X Factor or Fuel. Calorie Counter have ads?

Neither X Factor nor Fuel. Calorie Counter shows ads.

### Which is updated more often, X Factor or Fuel. Calorie Counter?

X Factor ships an update weekly, and Fuel. Calorie Counter weekly. Most recently, X Factor was updated on October 24, 2026 and Fuel. Calorie Counter on October 27, 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.*