# The Stack System vs Matterhorn Fit

The clearest difference is in-app purchases: Matterhorn Fit at none against The Stack System's 8. Matterhorn Fit also leads on update cadence (every 3 days vs monthly) and device support (3 vs 1). The Stack System's advantage is ratings volume (7K vs 2) and chart position (#112 vs unranked). On price, rating, ads and monetization model there is nothing between them.

Both are free to download. The Stack System sells 6 in-app purchases, starting at $9.99 per 7 days. Matterhorn Fit asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for The Stack System against 5.0 for Matterhorn Fit. That said, the two scores are not equally well evidenced: The Stack System has 7K ratings behind it against 2, so its average is the more settled of the two.

The Stack System ships an update monthly, Matterhorn Fit every 3 days. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | The Stack System | Matterhorn Fit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (7K ratings)](https://appshunter.io/ios/app/the-stack-system/id1534757407/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/matterhorn-fit/id6766328529/reviews)** |
| Number of ratings | **7K** | 2 |
| Positive reviews | 86.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Freemium | Free with in-app purchases |
| Best chart rank | **#112** | — |
| Size | 221 MB | 51 MB |
| Requires iOS | 16.2 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [The Stack System, LP](https://appshunter.io/developer/1534757409) | [SRK1 LLC](https://appshunter.io/developer/1688554776) |

## What reviewers say

### The Stack System

[App page](https://appshunter.io/ios/app/the-stack-system/id1534757407)

**Currently charting:** #112 Top Grossing · Health & Fitness (US App Store)

Enhance your golf game with science-based training modules for speed, wedging, and putting. Improve distance, accuracy, and consistency with personalized practice sessions and detailed analytics. Requires compatible hardware.

**Highlights:** Variable inertia speed training for distance, Science-based wedge distance control, Gamified putting practice and analytics, Personalized practice sessions, Real-time scoring and insights, Customizable training modes

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack Putting 1 Week | $9.99 | per 7 days |
| Stack Putting 1 Wk | $9.99 | per 7 days |
| TheStack Speed Training | $14.99 | per 7 days |
| TheStack Scoring Membership | $99.00 | per year |
| TheStack Speed Membership | $99.00 | per year |
| TheStack Premium Membership | $129.00 | per year |

**What reviewers like**

- 🚀 Seeing speed gains
- 👍 Easy to use app
- 👍 Motivating and helpful
- 👍 Detailed instructions
- 👍 Warmup routine

**What reviewers complain about**

- 🐛 Glitchy app (audio, dictation, timers)
- 🔧 Integration issues with other devices
- 💡 More insights and advice needed
- 🐛 Inconsistent audio/voice features
- 🐛 Occasional missing countdown

**Reported bugs**

- Putting app not working properly
- Slope percentage input issue

**Requested features**

- Calendar integration
- Music/podcast playback integration
- Apple Watch support


### Matterhorn Fit

[App page](https://appshunter.io/ios/app/matterhorn-fit/id6766328529)

This app helps you manage your fitness performance, recovery, and appointments. It allows you to find nearby facilities, book sessions, and track your progress. You can also manage schedules for multiple family members and purchase services directly through the app.

**Highlights:** Performance and recovery tracking, Appointment booking and management, Location finder for facilities, Multi-family member scheduling, In-app service and product purchases, Schedule synchronization

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

**In-app purchases:** none


## Frequently asked questions

### Is The Stack System free?

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

### Is Matterhorn Fit free?

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

### Which has better reviews, The Stack System or Matterhorn Fit?

Matterhorn Fit is rated higher. The Stack System averages 4.9 out of 5 from 7K ratings, while Matterhorn Fit averages 5.0 from 2 ratings.

### Do The Stack System or Matterhorn Fit have ads?

Neither The Stack System nor Matterhorn Fit shows ads.

### Which is updated more often, The Stack System or Matterhorn Fit?

The Stack System ships an update monthly, and Matterhorn Fit every 3 days. Most recently, The Stack System was updated on October 15, 2026 and Matterhorn Fit on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*