# Frontier X vs Sparta Mobile App

The clearest difference is in-app purchases: Sparta Mobile App at none against Frontier X's 2. Sparta Mobile App also leads on iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Frontier X sells 2 in-app purchases, starting at $14.99 per month. Sparta Mobile App asks for nothing beyond the download.

## The numbers

| Metric | Frontier X | Sparta Mobile App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (318 ratings)](https://appshunter.io/ios/app/frontier-x/id1483444499/reviews)** | — |
| Number of ratings | **318** | — |
| Positive reviews | 81.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 569 MB | 16 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fourthfrontier](https://appshunter.io/developer/1331846764) | [Mobile Adventure Sp. Z.o.o.](https://appshunter.io/developer/1490603429) |

## What reviewers say

### Frontier X

[App page](https://appshunter.io/ios/app/frontier-x/id1483444499)

Track your heart health and exercise performance with a smart chest strap monitor. Gain detailed insights into heart rate, rhythms, and training load. Receive personalized feedback and alerts to optimize your workouts and understand your body better.

**Highlights:** Heart Health Monitoring, Real-time Heart Rate & HRV, Breathing Rate & Strain Tracking, Activity Recording (24hrs), Personalized Vibration Alerts, AI-enabled Training Insights, Metabolic Profile Analytics (Premium)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $14.99 | per month |
| Yearly | $119.99 | per year |

**What reviewers like**

- 🚀 Amazing device
- 👍 Great HR data and insight
- 👍 Helpful in gaining more data
- 👍 Fantastic concept with excellent execution
- 👍 Loads of useful information

**What reviewers complain about**

- 🐛 Worse and worse as time goes by
- 🐛 ECG doesn't work
- 🐛 Chest strap issues, device keeps popping out
- 🐛 Paywalled functionality
- 🐛 Syncing issues, device keeps disconnecting

**Reported bugs**

- ECG stopped working
- Inaccurate breathing rate and other metrics
- Inability to edit activity details for indoor workouts
- Syncing issues with Garmin devices after firmware updates

**Requested features**

- Add interval markers
- Improve integration with Apple Fitness/Fitness+
- Add support for ANT+
- Improve compatibility with other fitness apps and devices
- Add more customization options for workouts


### Sparta Mobile App

[App page](https://appshunter.io/ios/app/sparta-mobile-app/id6757303239)

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

**In-app purchases:** none


## Frequently asked questions

### Is Frontier X free?

Frontier X is free to download, with in-app purchases available.

### Is Sparta Mobile App free?

Sparta Mobile App is free to download, with no in-app purchases.

### Do Frontier X or Sparta Mobile App have ads?

Neither Frontier X nor Sparta Mobile App shows ads.

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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.*