# SailFlow vs ARMAS

The clearest difference is rating: SailFlow at 4.7 against ARMAS's 4.3. SailFlow also leads on ratings volume (5.8K vs 6) and update cadence (every 3 weeks vs every 2 months). ARMAS's advantage is review sentiment (100% vs 84%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. SailFlow sells 10 in-app purchases, starting at $3.99 per month and ARMAS sells 3 in-app purchases, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

SailFlow holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: SailFlow has 5.8K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 84% of SailFlow's written reviews are positive against 100% of ARMAS's, so the app with the better star average is not the one people write more warmly about.

SailFlow ships an update every 3 weeks, ARMAS every 2 months. The most recent releases landed on September 29, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | SailFlow | ARMAS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (5.8K ratings)](https://appshunter.io/ios/app/sailflow-sailing-forecasts/id555309964/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/armas/id1446097782/reviews) |
| Number of ratings | **5.8K** | 6 |
| Positive reviews | 84.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#37** | — |
| Size | 137 MB | 38 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WeatherFlow](https://appshunter.io/developer/317992028) | [Space Environment Technologies, LLC.](https://appshunter.io/developer/1446097781) |

## What reviewers say

### SailFlow

[App page](https://appshunter.io/ios/app/sailflow-sailing-forecasts/id555309964)

**Currently charting:** #37 Top Grossing · Weather (US App Store)

Get hyper-accurate, real-time marine weather forecasts and live wind reports. This app uses proprietary weather systems and integrates public data for detailed wind, wave, tide, and radar information. Customize alerts and track your favorite sailing spots.

**Highlights:** Proprietary Tempest Weather Systems, Live wind and current station reports, AI-enhanced Nearcast forecasting, Radar, satellite, and precipitation maps, Tides charts and wave height, Customizable wind notifications, Nautical charts

**Features:** macOS Compatibility, Siri integration, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $3.99 | per month |
| Plus | $5.49 | per month |
| Gold | $14.99 | per month |
| Pro | $14.99 | per month |
| Pro - Pay As You Go (auto-renewing) | $19.99 | per month |
| Gold | $21.99 | per month |
| Plus | $44.99 | per year |
| Plus | $44.99 | per year |
| Pro | $119.99 | per year |
| Gold | $179.99 | per year |

**What reviewers like**

- 🚀 Easy to navigate
- 🚀 Accurate wind forecasts
- 🚀 Helpful for planning
- 🚀 Great data and graphics
- 🚀 Reliable and trustworthy

**What reviewers complain about**

- 🐛 Occasional inaccurate forecasts
- 🐛 Crashes or freezes
- 💰 Expensive subscription
- 🔍 Difficult to find specific locations
- 🔍 Confusing interface at times

**Reported bugs**

- Recent update caused app to crash
- Favorites list not working properly
- Wind direction arrow pointing incorrectly

**Requested features**

- Add more local weather stations
- Improve map and location search
- Provide more forecast models
- Add support for Apple Watch
- Fix wind direction arrow issue


### ARMAS

[App page](https://appshunter.io/ios/app/armas/id1446097782)

Real-time radiation monitoring for aviation and space weather awareness. Pairs with hardware detectors or provides data from global systems for pilots and travelers.

**Highlights:** Real-time radiation monitoring, Space weather awareness, Pairs with ARMAS Flight Modules, Detects various radiation types, Global airspace coverage, Data from ground and space systems

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premier | $2.99 | per year |
| Professional | $2.99 | per year |
| Member | $2.99 | one-time |


## Frequently asked questions

### Is SailFlow free?

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

### Is ARMAS free?

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

### Which has better reviews, SailFlow or ARMAS?

SailFlow is rated higher. SailFlow averages 4.7 out of 5 from 5.8K ratings, while ARMAS averages 4.3 from 6 ratings.

### Do SailFlow or ARMAS have ads?

Neither SailFlow nor ARMAS shows ads.

### Which is updated more often, SailFlow or ARMAS?

SailFlow ships an update every 3 weeks, and ARMAS every 2 months. Most recently, SailFlow was updated on September 29, 2026 and ARMAS on September 28, 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.*