# NOAA Tides vs CoastWarn

The clearest difference is in-app purchases: NOAA Tides at none against CoastWarn's 1. NOAA Tides also leads on update cadence (daily vs every 6 days) and chart position (#165 vs unranked). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. CoastWarn sells 1 one-off in-app purchase. NOAA Tides asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for NOAA Tides against 5.0 for CoastWarn. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

NOAA Tides ships an update daily, CoastWarn every 6 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | NOAA Tides | CoastWarn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/noaa-tides/id6756382132/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/coastwarn/id6798089542/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 6 days |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#165** | — |
| Size | 3 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vince Becquiot](https://appshunter.io/developer/1856156855) | [Ryan Dean](https://appshunter.io/developer/1850630498) |

## What reviewers say

### NOAA Tides

[App page](https://appshunter.io/ios/app/noaa-tides/id6756382132)

**Currently charting:** #165 Top Free · Weather (US App Store)

Get accurate tide predictions and real-time marine conditions for the US coast. This app provides beautiful charts, live weather, and wave data to help you plan your time on the water.

**Highlights:** Precise NOAA tide predictions, Live marine conditions, Tide times for US coast, Beautiful charts, Live weather data, Wave data

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

**In-app purchases:** none


### CoastWarn

[App page](https://appshunter.io/ios/app/coastwarn/id6798089542)

Receive timely alerts for coastal flooding based on your custom water-level thresholds. Monitor NOAA data, get tide charts, and stay informed about potential flood events affecting your property or boat.

**Highlights:** Customizable flood alert thresholds, NOAA water-level monitoring, Tide charts and predictions, Flood expected notifications, Alert history, Station map search

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CoastWarn Lifetime Unlock | $19.99 | one-time |


## Frequently asked questions

### Is NOAA Tides free?

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

### Is CoastWarn free?

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

### Which has better reviews, NOAA Tides or CoastWarn?

NOAA Tides and CoastWarn are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do NOAA Tides or CoastWarn have ads?

Neither NOAA Tides nor CoastWarn shows ads.

### Which is updated more often, NOAA Tides or CoastWarn?

NOAA Tides ships an update daily, and CoastWarn every 6 days. Most recently, NOAA Tides was updated on November 9, 2026 and CoastWarn on October 31, 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.*