# XOSS vs SLADA

XOSS and SLADA are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | XOSS | SLADA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (397 ratings)](https://appshunter.io/ios/app/xoss-train-with-science/id1267749721/reviews)** | — |
| Number of ratings | **397** | — |
| Positive reviews | 52.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free | — |
| Size | 110 MB | 29 MB |
| Requires iOS | 18 | **17.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [XOSS HONG KONG CO., LIMITED](https://appshunter.io/developer/1530144728) | [Sri Lanka Anti-Doping Agency](https://appshunter.io/developer/1858319503) |

## 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


### SLADA

[App page](https://appshunter.io/ios/app/slada-dr/id6756079197)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is XOSS free?

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

### Is SLADA free?

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

### Do XOSS or SLADA have ads?

Neither XOSS nor SLADA 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.*