# X Factor

> Simple calorie balance tracker for weight management and goal prediction. (iPhone/iPad app by Daniel Hansen.)

- Source: https://appshunter.io/ios/app/x-factor/id312733909 (this page in markdown: same URL + `.md`)
- Developer: [Daniel Hansen](https://appshunter.io/developer/312733912)
- Category: Health & Fitness, Utilities
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 20 MB
- Languages: American English
- Released: 2009-04-23
- Data updated: 2026-06-03
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/x-factor/id312733909/reviews.md

## What is X Factor?

X Factor is designed to quickly and easily track your daily calorie balance. No micro-nutrients. No detailed workout info. Just calories in and calories out, because when it comes to maintaining a healthy weight, that's what matters. 

With X Factor, it takes only a few seconds to record your daily weight, calories eaten, and activity calories. And with Health Integration enabled, active energy calories are imported automatically from HealthKit. The powerful Target Weight feature lets you set calorie and weight targets to see how your weight will change with different calorie balances.

Once you've entered your calorie balance for a few days, the Accuracy feature compares the calorie balance data you've entered against the calories associated with changes to your weight, making it easy to verify that your data is correct.

Whatever your weight management goals, your daily calorie balance is the key to acheiving them. Without it, you're stuck in a constant state of guessing that undermines your results. Take control of your weight with the power of clear, concise measurement.

Features:
- Lifetime tracking of weight, calories eaten and activity calories
- Predicts when target weight will be reached
- Calculates BMI and BMR values
- Supports kilograms/pounds/stones weight units
- 3D Touch shortcuts for logging data

Health App Integration:
- import active energy calories, age, gender and height 
- export your weight

## Key features

- Daily calorie balance tracking
- Weight and activity calorie logging
- Target weight prediction
- BMI and BMR calculation
- HealthKit integration
- Weight unit support

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/x-factor/id312733909/reviews.md

### 5/5 — Great calorie progress app

*2021-07-10, version 4.0*

I used an excel spreadsheet to track all this information. Super glad there’s an app that tracks this information in a UI similar to the fitness app. 

Though, I would love to a widget on the home screen though and a better explanation on what the “ accuracy” percentage means.

But other than that great app.

### 2/5 — Joy turned to sadness

*2016-06-10*

I've been using this app for about 4 years and to my surprise there was an update out.

I've lost around 100 lbs and recorded it all with this app.

I couldn't wait to get home and update it.

I'm not that happy with it now, it look and feels like all the other bog standard health apps out there.

I loved the old design and the way it displayed my weight info in graph form.

I loved all the stats that the old version calculated and found them very informative.

I loved the star type point system for losing weight, exercising and hitting your goal.

This app looks to much like the iPhone health app now,it just gives you some basic stats about you weight and calories.

I'm going to miss the old app and wish I'd not updated it now.

### 5/5 — Great

*2011-04-29, version 2.0.2*

Best app ever

### 5/5 — Highly recommended

*2009-05-20, version 0*

A must have if you are serious about exercise. There isn't an exercise database, so you do need to know how many calories you burn. I like this design. It makes the app easy to use, and anyone serious about exercise already knows this information.

The main benefit is seeing how much weight I'm burning off over time. I've been using the app for a month and I've burned off 6 pounds. It's very motivating to see how this grows over time in the graphs.

A fun and motivating tool that's easy to use. Glad I found it.

### 3/5 — Confused?

*2009-05-19, version 0*

I don't get it. It keeps asking for my height? Then when I think I have it figured out? I wouldn't buy this again... What is x factor? How do I know how many calories to enter?

## Frequently asked questions about X Factor

### What is X Factor?

X Factor is a health and fitness app designed to help users track their daily calorie balance for weight management. It focuses on calories in versus calories out, with features to predict target weight achievement and verify data accuracy.

### How accurate is X Factor?

The app includes an 'Accuracy' feature that compares your entered calorie balance data against the calories associated with your weight changes. This helps verify that your data is correct and provides confidence in your tracking.

### Does X Factor integrate with Apple Health?

Yes, X Factor supports Health App Integration. It can import active energy calories, age, gender, and height from HealthKit, and export your weight data.

### What weight units does X Factor support?

X Factor supports multiple weight units, including kilograms, pounds, and stones, making it adaptable to user preferences worldwide.

### Can X Factor predict when I'll reach my target weight?

Yes, the app features a powerful 'Target Weight' function. This allows you to set calorie and weight goals and see predictions on how your weight will change based on different calorie balances.

### What is the age rating for X Factor?

X Factor has an age rating of 4+, making it suitable for a wide range of users. It is available on iPhone, iPad, and iPod.

### How often is X Factor updated?

The latest version of X Factor is 4.0, which was last updated on November 21, 2017. While not recently updated, it has been available since its release in 2009.

### Does X Factor have ads?

No, X Factor does not contain advertisements. It is a free application that offers its core features without interruption from ads.

## Version history (last 5 releases)

### 4.0 — 2017-11-21

This app has been updated by Apple to display the Apple Watch app icon.

• Added support for iPhone X.

### 3.16 — 2017-10-07

• Bug fixes and minor improvements.

### 3.15 — 2016-11-29

• Bug fixes and minor improvements.

### 3.14 — 2016-10-10

• Bug fixes and minor improvements.

### 3.13 — 2016-08-16

• Bug fixes and minor improvements.

## Apps similar to X Factor

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [Diet Organizer](https://appshunter.io/ios/app/diet-organizer/id1057012589) | 1.0 (1) | Free | Health & Fitness |
| [iCaCal - AI Diet Coach](https://appshunter.io/ios/app/icacal-ai-diet-coach/id6737177610) | 4.8 (5) | Free | Health & Fitness |
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| [Ramon Barbers](https://appshunter.io/ios/app/ramon-barbers/id1542237460) | — | Free | Health & Fitness |

## More apps by Daniel Hansen

- [Brain Monitor: Letters](https://appshunter.io/ios/app/brain-monitor-letters/id924653125)
- [Brain Game University](https://appshunter.io/ios/app/brain-game-university/id930527050)
- [Brain Monitor: Splatter](https://appshunter.io/ios/app/brain-monitor-splatter/id1049735232)
- [Brain Arcade](https://appshunter.io/ios/app/brain-arcade/id1186719045)
- [Khroma](https://appshunter.io/ios/app/khroma/id1189225838)

All apps by Daniel Hansen: https://appshunter.io/developer/312733912

## Related topics

[peqapps](https://appshunter.io/ios/topics/peqapps) · [x factor](https://appshunter.io/ios/topics/x-factor)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-03.*