FloodWatch vs Floodzilla
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FloodWatch
Monitor real-time river and flood data across the United States. Track river height, discharge, precipitation, and water temperature with data from USGS and NWS. Ideal for property owners, outdoor enthusiasts, and anyone needing flood awareness.
- Real-time river data
- Historical trends and graphs
- Favorites list for gauges
- Nationwide US coverage
- Flood awareness alerts
- Recreation water condition checks
Read full descriptionHide full description
Whether you live near a river, enjoy kayaking or fishing, or simply want to stay informed about potential flooding, FloodWatch keeps you connected to the latest conditions across the United States. Powered by data from the US Geological Survey (USGS) and National Weather Service (NWS), FloodWatch helps you monitor rivers and streams with precision and confidence. Key Features • Real-Time River Data – Track current river height, discharge, precipitation, and water temperature from thousands of USGS gauges nationwide. • Historical Trends & Graphs – Visualize how river levels, streamflow, rainfall, and temperature change over time. • Favorites List – Save your most important gauges for instant access to the latest readings. • Nationwide Coverage – Explore data for rivers and streams throughout the U.S., including flood-stage information from NWS. • Flood Awareness – Keep watch on flood-prone areas and monitor rising waters before they become a threat. • Great for Recreation – Check water conditions before heading out to fish, paddle, or swim. Only USGS gauges with real-time data capabilities are included, so you’ll always get the most accurate and up-to-date information available. Whether you’re safeguarding your property, planning your next river trip, or simply fascinated by hydrology, FloodWatch gives you the insight to stay prepared when water levels change.
Floodzilla
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.
- Real-time flood conditions
- Flood warnings and advisories
- Interactive flood maps
- Latest news and updates
- Snoqualmie Valley specific information
Read full descriptionHide full description
Floodzilla provides real-time flood information for the Snoqualmie Valley, including: - Current flood conditions: See how high the water is at key locations in the valley. - Flood warnings and advisories: Receive alerts when there is a risk of flooding. - Flood maps: View interactive maps of the valley to see which areas are at risk of flooding. - News and updates: Stay up-to-date on the latest flooding information. Download Floodzilla today and stay safe from flooding!
Screenshots
Verdict
The clearest difference is in-app purchases: Floodzilla at none against FloodWatch's 5. Floodzilla also leads on ads (none vs shown) and rating (5.0 vs 4.7). FloodWatch's advantage is ratings volume (327 vs 3). On price, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. FloodWatch sells 5 one-off in-app purchases. Floodzilla asks for nothing beyond the download.
Floodzilla holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: FloodWatch has 327 ratings behind it against 3, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.
| Parameter | FloodWatch | Floodzilla |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (327 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 57.6% of reviews | — |
| Number of ratings | 327 — better | 3 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 16 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Brian Deshong | Snoqualmie Valley Preservation Alliance |
Customer experience
FloodWatch
Floodzilla
Bugs and requests
FloodWatch
Reported bugs
19 issues- App crashes on opening
- App crashes when updating levels
- App crashes when scrolling through favorites
- App crashes a lot
- App kicks out when viewing favorites
Show 14 moreShow fewer
- Map keeps returning to current location
- Layout changed, not preferred
- Does not work since September 11
- Update didn't resolve problem
- App kicks out when trying to access
- New update made nothing work
- Interface not intuitive
- Gauges not appearing on map initially
- Full page ads impede navigation
- App doesn't work at all
- No data or functions
- Inaccurate and missing major points
- App crashes on initial launch
- App crashes when trying to scroll thru favorites
Requested features
21 requests- Add alerts for flood stage
- Add Lock Screen widgets
- Add search bar for gauges
- Add CFS readings
- Add alerts for flow rate
Show 16 moreShow fewer
- Add historical data query
- Add data extractor to email
- Add link to data source website
- Add more information on the gage itself
- Add average conditions or trends
- Add push notifications
- Add ability to email charts
- Add automatic surfing to USGS website
- Add flood level for each river
- Add ability to send push notification for flooding potential
- Add discharge data
- Add complications for watch faces
- Add ability to remove ALL ads
- Add a "tell friends" function
- Add more sensors to pop up
- Add ability to get notified when water reaches a certain level in a certain area
Floodzilla
Not enough reviews yet to summarise bugs or requests.
In-app purchases
FloodWatch
- Tip Level 1$0.99
- Tip Level 2$2.99
- Tip Level 3$5.99
Show 2 moreShow fewer
- Ad Removal$8.99
- Tip Level 4$9.99
Floodzilla
No in-app purchases








