# XOSS vs ARadar

The clearest difference is price: XOSS at Free against ARadar's $5.99. XOSS also leads on ratings volume (397 vs 78). ARadar's advantage is review sentiment (72% vs 52%) and chart position (#47 vs unranked). On rating, update cadence, ads and in-app purchases there is nothing between them.

XOSS is free to download; ARadar costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.4 for XOSS against 4.4 for ARadar. That said, the two scores are not equally well evidenced: XOSS has 397 ratings behind it against 78, so its average is the more settled of the two. Written reviews are what separate them: 52% of XOSS's written reviews are positive against 72% of ARadar's.

XOSS ships an update every 6 weeks, ARadar every 3 weeks. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | XOSS | ARadar |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | **[4.4 (397 ratings)](https://appshunter.io/ios/app/xoss-train-with-science/id1267749721/reviews)** | [4.4 (78 ratings)](https://appshunter.io/ios/app/aradar/id1625452581/reviews) |
| Number of ratings | **397** | 78 |
| Positive reviews | 52.3% of reviews | **72.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Best chart rank | — | **#47** |
| Size | 110 MB | 12 MB |
| Requires iOS | 18 | **15.4** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [XOSS HONG KONG CO., LIMITED](https://appshunter.io/developer/1530144728) | [Roberto Viola](https://appshunter.io/developer/951920407) |

## What reviewers say

### XOSS

[App page](https://appshunter.io/ios/app/xoss-train-with-science/id1267749721)

Record and analyze your outdoor sports activities with detailed metrics like speed, cadence, and heart rate. Plan routes, sync data from various bike computers, and share your progress with friends. Offers advanced data analysis with charts and GPS tracking.

**Highlights:** Syncs with bike computers, Records workout data, Advanced data analysis, GPS tracking on map, Route planning, Syncs with Strava/TrainingPeaks

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

**In-app purchases:** none

**What reviewers like**

- 👍 Clean and simple interface
- 🚀 Reliable data tracking
- 💡 Useful 3D route visualization
- 🤝 Seamless Strava integration
- 💰 Good value for money

**What reviewers complain about**

- 🐛 Inconsistent GPS connectivity
- 🔄 Sync issues with Strava
- 🔍 Limited data analytics
- 🌐 Lack of language options (e.g. French, Russian)
- 🔋 Battery drain concerns

**Reported bugs**

- App crashes after recent updates
- Unable to update device firmware on iOS
- Sensor connectivity problems
- Incorrect distance/speed measurements

**Requested features**

- Add more detailed metrics (e.g. elevation, power)
- Improve route editing and privacy controls
- Introduce automatic sync options
- Provide more comprehensive data export capabilities


### ARadar

[App page](https://appshunter.io/ios/app/aradar/id1625452581)

**Currently charting:** #47 Top Paid · Sports (US App Store)

Enhance your cycling safety by connecting compatible radar devices directly to your Apple Watch. Receive vibration and audio alerts for approaching objects, view ride statistics, and sync workout data to health apps.

**Highlights:** Direct Apple Watch radar connection, Vibration and audio alerts, Overtaking statistics, Health App and Strava sync, Cadence sensor auto-connection, Mirror view on iPhone

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is XOSS free?

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

### Is ARadar free?

ARadar costs $5.99, with no in-app purchases.

### Which has better reviews, XOSS or ARadar?

XOSS is rated higher. XOSS averages 4.4 out of 5 from 397 ratings, while ARadar averages 4.4 from 78 ratings.

### Do XOSS or ARadar have ads?

Neither XOSS nor ARadar shows ads.

### Which is updated more often, XOSS or ARadar?

XOSS ships an update every 6 weeks, and ARadar every 3 weeks. Most recently, XOSS was updated on October 29, 2026 and ARadar on October 30, 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.*