Comparison

Flood Alert Watcher vs One Mekong

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Flood Alert Watcher

Receive real-time flood alerts and weather warnings for the UK. View interactive flood maps, understand warning levels, and get peace of mind with trusted data from the Environment Agency.

Highlights
  • Real-time flood alerts
  • Interactive flood maps
  • Environment Agency data
  • Three warning levels
  • Instant notification alerts (premium)
  • Ad-free experience (premium)
Features
Read full description

Flood Alert Watcher – Stay Ahead of the Floods Stay one step ahead of flooding with Flood Alert Watcher for the UK, your trusted companion for real-time flood alerts and weather warnings. Whether you're at home, at work, or on the go, our app keeps you informed and prepared for any potential flood risks in your area. Key Features - Interactive Flood Maps View live, dynamic maps that show affected areas and potential flood zones near your location. - User-Friendly Design Navigate effortlessly with a clean, intuitive interface that helps you find key information quickly. - Accurate, Trusted Data All flood and river level data come directly from the Environment Agency, ensuring you receive the most reliable and up-to-date information. - Peace of Mind With Flood Alert Watcher, you can feel confident knowing you’re always informed and ready for any flood emergency. Warning Levels Flood Alert Watcher uses three clear warning levels: - Alert - Warning - Severe The app shows how many active alerts exist for each level. Tap on any alert to see its location highlighted on the map, or tap directly on a map alert for full details. Upgrade for More Subscribe to unlock powerful premium features: - Notification Alerts – Receive instant alerts for new flood warnings in your area, so you can act fast. - Home Screen Flood Map – View flood risks for your current location at a glance. - Ad-Free Experience – Enjoy the app without interruptions. Stay informed, stay safe — and get peace of mind with Flood Alert Watcher Premium. Data Sources This app uses Environment Agency flood and river level data from the Real-Time Data API (Beta). Contains public sector information licensed under the Open Government Licence v3.0. Important Information Flood Alert Disclaimer: Flood data is provided via the Environment Agency’s Flood Monitoring API (environment.data.gov.uk/flood-monitoring). We aim to deliver accurate and timely alerts, but data may change or be delayed. Always verify with official sources before making safety decisions. For the latest official updates and advice, visit: https://check-for-flooding.service.gov.uk Use of this app is at your own risk. Neither this app nor the Environment Agency accepts responsibility for any loss, damage, or injury resulting from reliance on the information provided. EULA: https://mushroomapps.co.uk/licensed-application-end-user-license-agreement Privacy Policy: https://mushroomapps.co.uk/privacy-policy

About

One Mekong

Features
Read full description

The MRC One Mekong Mobile App is developed to support the information sharing of MRC Core River Monitoring Network (CRMN) Functions. These include Water Quality Monitoring, Hydrology Monitoring, Sediment Monitoring, Environmental Health Monitoring, Fisheries Monitoring, Climate and Precipitation Monitoring, Hydropower operation, and Flood and Drought Monitoring and Forecasting. The primary objectives of the MRC mobile app are to: i) Send push notifications and alerts for flood, drought, weather and disaster warnings, ii) Improve the reporting and sharing of MRC's river monitoring functions with a user-friendly interface, iii) Present an interactive map with customizable layers to effectively correlate remote sensing and ground data, iv) integrate AI technology for autogenerated weather reports and impact simulations, v) Enable users to view live CCTV from various monitoring stations, vi) Introduce iReport features for a community-based early warning system, allowing users to share flood, drought, and livelihood incidents with photos, locations, and comments,

Screenshots

Flood Alert Watcher4 screens
One Mekong4 screens

Verdict

The call

The clearest difference is in-app purchases: One Mekong at none against Flood Alert Watcher's 3. One Mekong also leads on ads (none vs shown) and iOS requirement (15.0 vs 18.6). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flood Alert Watcher sells 3 in-app purchases, starting at $0.99 per month. One Mekong asks for nothing beyond the download.

UpkeepUpdate frequency

Flood Alert Watcher ships an update every 3 weeks, One Mekong fortnightly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Flood Alert Watcher versus One Mekong: the parameters behind the verdict, then further details
ParameterFlood Alert WatcherOne Mekong
PriceFreeFree
Rating4.8 (5 ratings) — better—
Positive reviews13.3% of reviews—
Number of ratings5 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.615.0 — better
Further details — not scored
Size41 MB147 MB
Age rating4+4+
DeveloperJohn BensonThanawat Wetchapan

In-app purchases

3 purchases

Flood Alert Watcher

Subscriptions3
  • Monthly3 Days trial$0.991 Month
  • Annual$1.991 Year
  • Annual3 Days trial$2.991 Year
None

One Mekong

No in-app purchases

Questions

Is Flood Alert Watcher free?
Flood Alert Watcher is free to download, with in-app purchases available.
Is One Mekong free?
One Mekong is free to download, with no in-app purchases.
Do Flood Alert Watcher or One Mekong have ads?
Flood Alert Watcher shows ads; One Mekong does not.
Which is updated more often, Flood Alert Watcher or One Mekong?
Flood Alert Watcher ships an update every 3 weeks, and One Mekong fortnightly. Most recently, Flood Alert Watcher was updated on November 3, 2026 and One Mekong on October 30, 2026.

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