# Frontier X vs NextSense

The clearest difference is in-app purchases: NextSense at none against Frontier X's 2. NextSense also leads on update cadence (every 6 days vs every 3 weeks). Frontier X's advantage is review sentiment (82% vs 50%) and ratings volume (318 vs 80). On price, rating, 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. NextSense asks for nothing beyond the download.

NextSense holds the better App Store score, 4.7 against 4.6. Both are backed by a comparable volume of ratings — 318 and 80 respectively. Written reviews complicate that: 82% of Frontier X's written reviews are positive against 50% of NextSense's, so the app with the better star average is not the one people write more warmly about.

Frontier X ships an update every 3 weeks, NextSense every 6 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Frontier X | NextSense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (318 ratings)](https://appshunter.io/ios/app/frontier-x/id1483444499/reviews) | **[4.7 (80 ratings)](https://appshunter.io/ios/app/nextsense/id6636482744/reviews)** |
| Number of ratings | **318** | 80 |
| Positive reviews | **81.8% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 569 MB | 1.9 GB |
| Requires iOS | **16.0** | 17.6 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fourthfrontier](https://appshunter.io/developer/1331846764) | [Lucid Reality](https://appshunter.io/developer/1417122334) |

## 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


### NextSense

[App page](https://appshunter.io/ios/app/nextsense/id6636482744)

This app works with brain-responsive earbuds to enhance sleep quality. It tracks brain activity to personalize audio, offering insights into sleep patterns and a gentle alarm. Integration with Apple Health provides further personalized data.

**Highlights:** Brainwave tracking for sleep depth, Personalized audio for better rest, Detailed sleep reports and trends, Automatic audio pause when asleep, Nap mode with timer and soundscapes, Soothing sound library, Gentle alarm with calming sounds

**In-app purchases:** none


## Frequently asked questions

### Is Frontier X free?

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

### Is NextSense free?

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

### Which has better reviews, Frontier X or NextSense?

NextSense is rated higher. Frontier X averages 4.6 out of 5 from 318 ratings, while NextSense averages 4.7 from 80 ratings.

### Do Frontier X or NextSense have ads?

Neither Frontier X nor NextSense shows ads.

### Which is updated more often, Frontier X or NextSense?

Frontier X ships an update every 3 weeks, and NextSense every 6 days. Most recently, Frontier X was updated on October 25, 2026 and NextSense 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.*