Comparison

Fosiva vs Meduseo

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

Head to head
About

Fosiva

Get real-time information and alerts about natural hazards like fires, floods, and weather warnings. This free, multilingual app provides official data and guidance for effective response and environmental awareness.

Highlights
  • Real-time hazard maps
  • Interactive fire risk map
  • Flood risk mapping
  • Weather warning notifications
  • Official safety guidance
  • Environmental awareness information
Features
Read full description

Fires, mountain closures, floods, weather warnings... FOSIVA provides real-time information and helps you respond effectively to natural hazards. A free, simple, and multilingual application designed for citizens and local stakeholders. INTERACTIVE MAP: - Fire risk and mountain access map - Flood risk map - Weather warning map REAL-TIME ALERTS: - Notifications to alert you of mountain closures, weather warnings, and major events OFFICIAL DATA: - The right actions to take in case of danger - Environmental and biodiversity awareness in the Mediterranean - First aid measures The data comes from official sources. They are collected from public stakeholders, such as the Entente Valabre, departmental prefectures, Vigicrues, and Météo-France. CONTACT US Contact us at contact@fosiva.fr for any questions.

About

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.

Highlights
  • Real-time jellyfish presence data
  • Color-coded map visualization
  • User-submitted jellyfish reports
  • Updated every 4 hours
  • Year-round availability
  • Search by city
Features
Read full description

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

Fosiva4 screens
Meduseo4 screens

Verdict

The call

The clearest difference is ads: Fosiva at none against Meduseo's shown. Fosiva also leads on monetization model (free vs ad-supported) and review sentiment (90% vs 81%). Meduseo's advantage is update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fosiva ships an update every 2 months, Meduseo every 2 weeks. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
Fosiva versus Meduseo: the parameters behind the verdict, then further details
ParameterFosivaMeduseo
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews90.0% of reviews — better81.3% of reviews
Number of ratings—3 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better15.1
Further details — not scored
Size91 MB38 MB
Age rating4+4+
DeveloperPhysisJeremy Deverdun

Customer experience

Fosiva

Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

Meduseo

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews16 reviews
Positive81.3%
Neutral6.3%
Negative12.5%

In-app purchases

None

Fosiva

No in-app purchases

None

Meduseo

No in-app purchases

Questions

Is Fosiva free?
Fosiva is free to download, with no in-app purchases.
Is Meduseo free?
Meduseo is free to download, with no in-app purchases.
Do Fosiva or Meduseo have ads?
Meduseo shows ads; Fosiva does not.
Which is updated more often, Fosiva or Meduseo?
Fosiva ships an update every 2 months, and Meduseo every 2 weeks. Most recently, Fosiva was updated on September 22, 2026 and Meduseo on September 23, 2026.

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