# RiverApp vs Floodzilla

The clearest difference is in-app purchases: Floodzilla at none against RiverApp's 3. Floodzilla also leads on rating (5.0 vs 4.8) and iOS requirement (15.1 vs 17.0). RiverApp's advantage is ratings volume (5.3K vs 3) and update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. RiverApp sells 3 in-app purchases, starting at $0.99 per month. Floodzilla asks for nothing beyond the download.

Floodzilla holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: RiverApp has 5.3K ratings behind it against 3, so its average is the more settled of the two.

RiverApp ships an update every 3 weeks, Floodzilla every 2 months. The most recent releases landed on September 26, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | RiverApp | Floodzilla |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (5.3K ratings)](https://appshunter.io/ios/app/riverapp-river-levels/id667012473/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/floodzilla/id6448645748/reviews)** |
| Number of ratings | **5.3K** | 3 |
| Positive reviews | 79.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#111** | — |
| Size | 55 MB | 57 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Florian Bessiere](https://appshunter.io/developer/667012476) | [Snoqualmie Valley Preservation Alliance](https://appshunter.io/developer/1685335918) |

## What reviewers say

### RiverApp

[App page](https://appshunter.io/ios/app/riverapp-river-levels/id667012473)

**Currently charting:** #111 Top Free · Weather, #127 Top Grossing · Weather (US App Store)

Access real-time water levels, flows, and temperatures for rivers worldwide. Ideal for sports enthusiasts and professionals, it offers detailed maps, navigability information, and customizable alerts for over 40,000 hydrometric stations.

**Highlights:** Real-time water levels and flows, Water temperatures, Hydrometric station maps, Customizable alerts, Whitewater course navigability, User-added hazards and courses

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - 1 month subscription | $0.99 | per month |
| Premium - 1 year subscription | $6.99 | per year |
| RiverApp Premium | $29.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🗺️ Comprehensive coverage of rivers
- 📊 Useful data and visualizations
- 🔔 Helpful alerts and notifications
- 💰 Affordable premium upgrade

**What reviewers complain about**

- 🐛 Occasional inaccurate or outdated information
- 🔍 Missing some important river gauges
- 💬 Lack of communication from developers
- 🗺️ Incorrect geographic information for some areas

**Reported bugs**

- Map feature not working due to internet connection issues
- Horizontal lines and color indicators disappearing from graphs
- Inconsistent or unreliable data updates

**Requested features**

- Add more river coverage, especially in underserved regions
- Improve forecast and prediction capabilities
- Implement a journaling or note-taking feature
- Allow for customizable alerts and notifications
- Add support for additional measurement units (e.g., millimeters)


### Floodzilla

[App page](https://appshunter.io/ios/app/floodzilla/id6448645748)

Get real-time flood conditions, warnings, and advisories for the Snoqualmie Valley. Interactive maps show at-risk areas, and you can access the latest news and updates to stay informed and safe.

**Highlights:** Real-time flood conditions, Flood warnings and advisories, Interactive flood maps, Latest news and updates, Snoqualmie Valley specific information

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

**In-app purchases:** none


## Frequently asked questions

### Is RiverApp free?

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

### Is Floodzilla free?

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

### Which has better reviews, RiverApp or Floodzilla?

Floodzilla is rated higher. RiverApp averages 4.8 out of 5 from 5.3K ratings, while Floodzilla averages 5.0 from 3 ratings.

### Do RiverApp or Floodzilla have ads?

Neither RiverApp nor Floodzilla shows ads.

### Which is updated more often, RiverApp or Floodzilla?

RiverApp ships an update every 3 weeks, and Floodzilla every 2 months. Most recently, RiverApp was updated on September 26, 2026 and Floodzilla on June 10, 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.*