# arcSail vs The R.O.C. Kosmos

The clearest difference is in-app purchases: The R.O.C. Kosmos at none against arcSail's 1. arcSail's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. arcSail sells 1 one-off in-app purchase. The R.O.C. Kosmos asks for nothing beyond the download.

arcSail ships an update every 2 months, The R.O.C. Kosmos every 6 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | arcSail | The R.O.C. Kosmos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/arcsail/id921829620/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 19 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Smartphone Design Ltd](https://appshunter.io/developer/298734749) | [GEORGIOS TRIMITHIOTIS](https://appshunter.io/developer/1802361703) |

## What reviewers say

### arcSail

[App page](https://appshunter.io/ios/app/arcsail/id921829620)

This app provides advanced real-time race scoring for sailing clubs. It supports single or multi-day regattas and season-long series with a user-friendly touch interface. Features include various scoring systems, handicap calculations, and instant results emailing.

**Highlights:** Real-time race scoring, Supports single/multi-day regattas, Season-long series scoring, Multiple scoring systems (Low Point, High Point, etc.), Handicap and penalty calculations, Email/AirPrint results (in-app purchase), Data backup and transfer

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Enable Email Output | $9.99 | one-time |


### The R.O.C. Kosmos

[App page](https://appshunter.io/ios/app/the-roc-kosmos/id6746734927)

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

**In-app purchases:** none


## Frequently asked questions

### Is arcSail free?

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

### Is The R.O.C. Kosmos free?

The R.O.C. Kosmos is free to download, with no in-app purchases.

### Do arcSail or The R.O.C. Kosmos have ads?

Neither arcSail nor The R.O.C. Kosmos shows ads.

### Which is updated more often, arcSail or The R.O.C. Kosmos?

arcSail ships an update every 2 months, and The R.O.C. Kosmos every 6 weeks. Most recently, arcSail was updated on November 1, 2026 and The R.O.C. Kosmos 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.*