Tide Alert (NOAA) vs Meduseo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tide Alert (NOAA)
Get accurate tide predictions, current speeds, and lunar phases with this app. It offers custom alerts, offline access, and detailed weather conditions for coastal areas. Plan your outdoor activities with confidence using comprehensive tidal data.
- Tide predictions for thousands of US stations
- Tidal current speed and slack tide data
- Customizable tide alerts
- Full offline access to tide data
- Wind, swell, and water temperature forecasts
- Apple Watch app and widgets
- Moon phase calendar
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Tide Alert is the #1 app for tide predictions, tidal currents, and lunar phases, all in one beautiful interface. Powered by NOAA tide forecasts, it delivers accurate high tide and low tide times, current speeds, slack tide windows, swell data, water temperature, and wind conditions for thousands of stations along the US coastline. Set custom alerts for high tide, low tide, or any tide level you choose and never miss a window again. With full offline support, your tide data is always available, even without cell service. What's New: Tidal Currents & Slack Tides • View real-time tidal current speed overlayed on the tide chart. • See slack tide periods with estimated begin and end times. • Current data sourced from NOAA current prediction stations. Compare Tide Charts • Compare multiple stations side by side. • Add stations to compare directly from the map. Monthly High & Low • Redesigned monthly view with visual tide range bars. • See the month's lowest, highest, and average tidal range at a glance. Apple Watch • New ocean conditions view with wind, swell height, water temperature, and current speed. • Tap the wave icon on the main screen to check conditions instantly. Wind, Swell & Water Temperature • Hourly wind speed, gust, and direction forecasts. • Swell chart with height, period, and direction. • Water temperature from NOAA and Open-Meteo. Who is Tide Alert for? Anyone who needs to know the tides. Fishermen timing their catch. Surfers checking swell and tides together. Kayakers and paddleboarders planning safe launches. Boaters and sailors navigating harbors. Crabbers and clammers working low tides. Beach photographers chasing golden hour at low tide. Dog walkers, birdwatchers, and tide pool explorers. Divers planning slack water entries. Key Features: • Tide predictions for thousands of NOAA stations across the US. • Tidal current speed and slack tide annotations on the chart. • Custom tide alerts — get notified for high tide, low tide, or any level. • Full offline access to tide data and charts for favorite stations. • Interactive map with station discovery and quick actions. • Compare tide charts across multiple stations. • Monthly high & low tide overview with daily range bars. • Wind, swell, and water temperature conditions. • Sunrise, sunset, moonrise, and moonset on the chart. • Moon phase calendar. • Apple Watch app with tide chart, conditions, and complications. • Home Screen, Lock Screen, and StandBy widgets. • iOS Shortcuts and Siri voice commands. • Customizable chart symbols and reference levels. • Supports all US time zones and daylight saving time. Tide Alert is free to try with all features available during the trial period. After the trial, a subscription is required to continue. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ DISCLAIMER — See https://tidealert.app/disclaimer.html Use Tide Alert at your own risk. Tide data does not account for the effects of wind, storms, rain, freshwater runoff, or floods. The tide graph uses predicted high and low tide events with approximated segments between them. Do NOT use Tide Alert for NAVIGATION or any purpose that may result in personal injury or property damage. Tide Alert is not liable for any loss, injuries, or damage caused by its use. Tide Alert is not associated with NOAA.
Meduseo
Get real-time updates on jellyfish presence at beaches to avoid unpleasant surprises. Visualize jellyfish density on a map with color-coded indicators and contribute your own sightings to the community.
- Real-time jellyfish presence data
- Color-coded map visualization
- User-submitted jellyfish reports
- Updated every 4 hours
- Year-round availability
- Search by city
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Tired of arriving on a beach to realize that it is full of jellyfish? Impossible to swim, in short a spoiled moment! With Meduseo, the jellyfish weather, find out in real time about the presence of jellyfish on the beaches. You only have to enter the name of the city to access the information. The data is presented in the form of bubbles on the map going from yellow to red: - No color: no jellyfish reported - Yellow: Rare jellyfish (you may come across one isolated, no risk for swimming) - Orange: Some jellyfish (swimming may be possible, but be careful) - Red: Many jellyfish (we do not recommend swimming) The base is updated every 4 hours for France, Spain, Italy, Australia, and New Zealand. Meduseo uses a unique algorithm, specifically developed for this theme making data available in summer but also throughout the year! You can also report the presence of jellyfish on beaches directly from the application and thus share your observations with the community.
Screenshots
Verdict
The clearest difference is in-app purchases: Meduseo at none against Tide Alert (NOAA)'s 3. Meduseo also leads on rating (5.0 vs 4.8) and review sentiment (81% vs 73%). Tide Alert (NOAA)'s advantage is ads (none vs shown) and ratings volume (45K vs 3). On price, update cadence, device support and iOS requirement 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. Tide Alert (NOAA) sells 3 in-app purchases, starting at $6.99 per 3 months. Meduseo asks for nothing beyond the download.
Meduseo holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Tide Alert (NOAA) has 45K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 73% of Tide Alert (NOAA)'s written reviews are positive against 81% of Meduseo's.
Tide Alert (NOAA) ships an update every 3 weeks, Meduseo every 2 weeks. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.
| Parameter | Tide Alert (NOAA) | Meduseo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (45K ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 72.8% of reviews | 81.3% of reviews — better |
| Number of ratings | 45K — better | 3 |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Best chart rank | #42 — better | — |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 37 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Rivolu LLC | Jeremy Deverdun |
Customer experience
Tide Alert (NOAA)
Meduseo
Bugs and requests
Tide Alert (NOAA)
Reported bugs
2 issues- App crashes on launch after iOS updates
- Tide data not syncing correctly with visual indicators
Requested features
3 requests- Add support for negative tide levels
- Improve sync between app and Apple Watch
- Implement family sharing for subscription
Meduseo
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Tide Alert (NOAA)
- 3 Months Full Access$6.993 Months
- Tide Alert 1 Year Subscription$19.991 Year
- Tide Alert Gold$99.99
Meduseo
No in-app purchases









