# NaturalSlim vs Mi MCS

The clearest difference is rating: Mi MCS at 4.5 against NaturalSlim's 4.2. Mi MCS also leads on ratings volume (3.4K vs 45) and update cadence (every 4 months vs every 8 months). NaturalSlim's advantage is review sentiment (38% vs 22%) and iOS requirement (7.0 vs 12.2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Mi MCS holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Mi MCS has 3.4K ratings behind it against 45, so its average is the more settled of the two. Written reviews complicate that: 38% of NaturalSlim's written reviews are positive against 22% of Mi MCS's, so the app with the better star average is not the one people write more warmly about.

NaturalSlim ships an update every 8 months, Mi MCS every 4 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NaturalSlim | Mi MCS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (45 ratings)](https://appshunter.io/ios/app/naturalslim/id896446475/reviews) | **[4.5 (3.4K ratings)](https://appshunter.io/ios/app/mi-mcs/id1447254654/reviews)** |
| Number of ratings | 45 | **3.4K** |
| Positive reviews | **37.5% of reviews** | 21.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 73 MB | 99 MB |
| Requires iOS | **7.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Metabolic Technology Center](https://appshunter.io/developer/482918936) | [MCS Healthcare Holdings LLC](https://appshunter.io/developer/1329560537) |

## What reviewers say

### NaturalSlim

[App page](https://appshunter.io/ios/app/naturalslim/id896446475)

Access the latest news, metabolism videos, and exclusive content for members of a weight loss system. Stay informed and engaged with resources designed to support your wellness journey.

**Highlights:** Latest news updates, Metabolism videos, Exclusive member content, Weightloss system resources

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

**In-app purchases:** none


### Mi MCS

[App page](https://appshunter.io/ios/app/mi-mcs/id1447254654)

Access your health plan services conveniently from your mobile device. View your virtual card, find providers, track medical history, and connect with health services.

**Highlights:** Virtual health plan card, Roof certification access, Provider directory search, Favorite suppliers list, Medical services history, Hospital locator, Direct access to MCS Medilínea

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ⭐ Excellent app with all necessary medical information
- 👍 Clean, modern design
- 💳 Provides quick access to MCS cards
- 📊 Helpful historical list of benefits

**What reviewers complain about**

- 🐛 Frequent crashes and errors when logging in or accessing features
- 🔍 Unreliable provider search functionality
- 💤 Slow and unresponsive app performance
- 📄 Incomplete information (e.g., missing lab results, OTC balance)

**Reported bugs**

- Registration process has errors
- Telemedicine feature not working
- App not compatible with latest iOS updates
- Unable to see digital card or plan information

**Requested features**

- Add OTC catalog and order history
- Integrate with Apple Maps for provider locations
- Provide access to lab results and medical records
- Allow viewing of ATH card balance within the app


## Frequently asked questions

### Is NaturalSlim free?

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

### Is Mi MCS free?

Mi MCS is free to download, with no in-app purchases.

### Which has better reviews, NaturalSlim or Mi MCS?

Mi MCS is rated higher. NaturalSlim averages 4.2 out of 5 from 45 ratings, while Mi MCS averages 4.5 from 3.4K ratings.

### Do NaturalSlim or Mi MCS have ads?

Neither NaturalSlim nor Mi MCS shows ads.

### Which is updated more often, NaturalSlim or Mi MCS?

NaturalSlim ships an update every 8 months, and Mi MCS every 4 months. Most recently, NaturalSlim was updated on October 26, 2026 and Mi MCS on October 24, 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.*