# SailFlow vs Sea Level Rise

The clearest difference is review sentiment: SailFlow at 84% against Sea Level Rise's 20%. SailFlow also leads on rating (4.7 vs 3.4) and ratings volume (5.9K vs 12). Sea Level Rise's advantage is in-app purchases (none vs 10). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SailFlow sells 10 in-app purchases, starting at $3.99 per month. Sea Level Rise asks for nothing beyond the download.

SailFlow holds the better App Store score, 4.7 against 3.4. That said, the two scores are not equally well evidenced: SailFlow has 5.9K ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 84% of SailFlow's written reviews are positive against 20% of Sea Level Rise's.

SailFlow ships an update every 3 weeks, Sea Level Rise every 6 weeks. Both last shipped on October 29, 2026.

## The numbers

| Metric | SailFlow | Sea Level Rise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (5.9K ratings)](https://appshunter.io/ios/app/sailflow-sailing-forecasts/id555309964/reviews)** | [3.4 (12 ratings)](https://appshunter.io/ios/app/sea-level-rise/id890125312/reviews) |
| Number of ratings | **5.9K** | 12 |
| Positive reviews | **84.0% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#40** | — |
| Size | 137 MB | 69 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WeatherFlow](https://appshunter.io/developer/317992028) | [Concursive](https://appshunter.io/developer/402797463) |

## What reviewers say

### SailFlow

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

**Currently charting:** #40 Top Grossing · Weather, #197 Top Free · 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


### Sea Level Rise

[App page](https://appshunter.io/ios/app/sea-level-rise/id890125312)

Map and document local flooding impacts caused by sea level rise. Contribute street-level data through photo submissions and identify "Trouble" spots. Participate in crowd-sourcing events to help researchers and civic leaders understand and address flooding challenges.

**Highlights:** Map community flooding, Document sea level rise impacts, Contribute street-level data, Identify 'Trouble' spots, Capture and share photos, Participate in crowd-sourcing events

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

**In-app purchases:** none


## Frequently asked questions

### Is SailFlow free?

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

### Is Sea Level Rise free?

Sea Level Rise is free to download, with no in-app purchases.

### Which has better reviews, SailFlow or Sea Level Rise?

SailFlow is rated higher. SailFlow averages 4.7 out of 5 from 5.9K ratings, while Sea Level Rise averages 3.4 from 12 ratings.

### Do SailFlow or Sea Level Rise have ads?

Neither SailFlow nor Sea Level Rise shows ads.

### Which is updated more often, SailFlow or Sea Level Rise?

SailFlow ships an update every 3 weeks, and Sea Level Rise every 6 weeks. Most recently, SailFlow was updated on October 29, 2026 and Sea Level Rise on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*