# FloodNotice vs Vertex Maps

The clearest difference is in-app purchases: FloodNotice at none against Vertex Maps's 2. FloodNotice also leads on ratings volume (11 vs 3). Vertex Maps's advantage is update cadence (every 3 days vs every 7 months) and chart position (#195 vs unranked). On price, rating, ads and device support there is nothing between them.

Both are free to download. Vertex Maps sells 2 in-app purchases, starting at $4.99 per month. FloodNotice asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for FloodNotice against 5.0 for Vertex Maps. Both are backed by a comparable volume of ratings — 11 and 3 respectively.

FloodNotice ships an update every 7 months, Vertex Maps every 3 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | FloodNotice | Vertex Maps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (11 ratings)](https://appshunter.io/ios/app/floodnotice/id6446180837/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/vertex-maps/id6808259820/reviews)** |
| Number of ratings | **11** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Best chart rank | — | **#195** |
| Size | 10 MB | 110 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Nathaniel Copeland](https://appshunter.io/developer/1676503463) | [Vertex Maps LLC](https://appshunter.io/developer/1582533006) |

## What reviewers say

### FloodNotice

[App page](https://appshunter.io/ios/app/floodnotice/id6446180837)

Access real-time streamflow, river levels, and flood forecasts from over 6,000 locations across the U.S. Save your favorite streamgages for quick access to critical waterbody information.

**Highlights:** Real-time streamflow observations, River level monitoring, Flood condition alerts, Streamflow forecasts, Save favorite streamgages, Coverage across 50 U.S. states and Puerto Rico

**Features:** macOS Compatibility

**In-app purchases:** none


### Vertex Maps

[App page](https://appshunter.io/ios/app/vertex-maps/id6808259820)

**Currently charting:** #195 Top Grossing · Weather (US App Store)

This app provides detailed backcountry maps and weather forecasts for outdoor activities like paragliding and skiing. It offers features for planning routes, tracking activities, and accessing real-time weather data, with advanced tools available through a subscription.

**Highlights:** Mountain weather and terrain maps, Flight log and activity tracking, Offline map downloads, Route building and editing, Augmented reality terrain view, Detailed hourly forecasts, Weather Briefing tool

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vertex Pro Monthly | $4.99 | per month |
| Vertex Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is FloodNotice free?

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

### Is Vertex Maps free?

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

### Which has better reviews, FloodNotice or Vertex Maps?

Vertex Maps is rated higher. FloodNotice averages 4.9 out of 5 from 11 ratings, while Vertex Maps averages 5.0 from 3 ratings.

### Do FloodNotice or Vertex Maps have ads?

Neither FloodNotice nor Vertex Maps shows ads.

### Which is updated more often, FloodNotice or Vertex Maps?

FloodNotice ships an update every 7 months, and Vertex Maps every 3 days. Most recently, FloodNotice was updated on November 3, 2026 and Vertex Maps 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.*