# The Difference vs PureGym US

The clearest difference is review sentiment: The Difference at 99% against PureGym US's 10%. The Difference also leads on rating (4.8 vs 4.6). PureGym US's advantage is in-app purchases (none vs 2) and ratings volume (18K vs 142). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. The Difference sells 2 in-app purchases, starting at $4.99 per month. PureGym US asks for nothing beyond the download.

The Difference holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: PureGym US has 18K ratings behind it against 142, so its average is the more settled of the two. Written reviews point the same way: 99% of The Difference's written reviews are positive against 10% of PureGym US's.

The Difference ships an update monthly, PureGym US every 5 weeks. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | The Difference | PureGym US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (142 ratings)](https://appshunter.io/ios/app/the-difference-predict-weight/id1615639219/reviews)** | [4.6 (18K ratings)](https://appshunter.io/ios/app/puregym-us/id6747757018/reviews) |
| Number of ratings | 142 | **18K** |
| Positive reviews | **99.0% of reviews** | 10.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Freemium | **Free** |
| Size | 40 MB | 115 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The Difference App LLC](https://appshunter.io/developer/1615639221) | [Blink Holdings Inc.](https://appshunter.io/developer/1343440337) |

## 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


### PureGym US

[App page](https://appshunter.io/ios/app/puregym-us/id6747757018)

Manage your fitness journey with this gym companion app. Easily check in, handle your membership, and stay updated on gym news. It helps you stay active by integrating with health data.

**Highlights:** Mobile check-in, Membership management, Guest invitations, Billing and balance updates, HealthKit integration

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

**In-app purchases:** none

**What reviewers complain about**

- 🐛 Login issues
- 🐛 Password reset not working
- 🐛 Registration not working
- 🐛 Membership information not transferring
- 🐛 Incorrect gym location

**Reported bugs**

- Login not working
- Password reset not working
- Registration not working
- Incorrect gym location
- Membership information not transferring

**Requested features**

- Ability to login with correct credentials
- Proper password reset functionality
- Seamless account registration
- Accurate gym location selection
- Membership information transfer


## Frequently asked questions

### Is The Difference free?

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

### Is PureGym US free?

PureGym US is free to download, with no in-app purchases.

### Which has better reviews, The Difference or PureGym US?

The Difference is rated higher. The Difference averages 4.8 out of 5 from 142 ratings, while PureGym US averages 4.6 from 18K ratings.

### Do The Difference or PureGym US have ads?

Neither The Difference nor PureGym US shows ads.

### Which is updated more often, The Difference or PureGym US?

The Difference ships an update monthly, and PureGym US every 5 weeks. Most recently, The Difference was updated on October 25, 2026 and PureGym US 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.*