Comparison

Hidrográfico + vs Riska

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

Head to head
About

Hidrográfico +

Features
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App Hidrográfico + oferece ao cidadão o acesso fácil, próximo e em mobilidade a informações sobre o espaço marítimo de interesse nacional e modelos de previsão das condições oceanográficas (e.g. agitação marítima, maré, etc.) promovendo o desenvolvimento económico do setor do mar e o uso seguro do mar Português.

About

Riska

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Riska — wildfires, weather and official warnings for the places you care about in Portugal, all year round. INDEPENDENT APP — NOT A GOVERNMENT SERVICE Riska is not operated by, affiliated with, or endorsed by any government entity including ANEPC, IPMA, ICNF, SGIFR or APA. It aggregates publicly available data from the sources listed below and does not generate data independently. Information may be delayed or incomplete. In an emergency, follow official authorities and call 112. ONE MAP, ALL YEAR - Wildfires: Civil Protection (ANEPC) and ICNF incidents with their official status, source and time. Satellite detections (NASA FIRMS) are shown separately, as unconfirmed. - Winter (mainland Portugal): incidents recorded by Civil Protection — fallen trees and structures, landslides and road occurrences (they do not mean a road is closed) on the map; flooding reported to ANEPC in the list, by municipality — always with time and source. - APA flood zones: official long-term flood mapping (100-year return period). It does not show flooding in progress. - Official IPMA warnings by district (wind, rain, snow, cold, rough seas), including those that start later. - IPMA fire danger by municipality. Official information is always shown separately from Riska's own analysis. RADAR AND FORECAST — WITH A FREE ACCOUNT - Rain radar (EUMETNET OPERA), with the time of every image and a legend. - Rain, snow and cloud forecasts from the ECMWF model for the coming days. Every image shows its time. When data is late, the app tells you. NEARBY - Save the place you care about — your home, your land, your family's village — and see what is happening around it: incidents, warnings and weather. A free account includes one saved place. - Weather at your place and a forecast for the coming days, with the source and time of every reading. ALERTS THAT EXPLAIN WHY - Alerts when an incident, an official warning or a fire-danger peak meets your place — by notification, email or Telegram — with the distance to your place where it applies. - Follow an incident to get alerts about it. Alerts are supplementary awareness: they can be delayed and do not replace official warnings. COMMUNITY PHOTOS Photos are displayed publicly only with the sender's permission and moderator approval. Report a photo or sender, or hide all photos from that sender from your own view. Undo hiding in More → Hidden photo senders. PLAN AND LEARN Burning and restrictions (official local information), an outdoor activity check, emergency contacts, Aldeias Seguras safety points, private family safety, preparedness guides and post-fire recovery. Fully bilingual: Portuguese and English. DATA SOURCES 1. ANEPC — civil protection — https://www.prociv.gov.pt 2. IPMA — warnings, fire danger — https://www.ipma.pt 3. ICNF/SGIFR — rural fires — https://www.sgifr.gov.pt 4. NASA FIRMS — satellite detection — https://firms.modaps.eosdis.nasa.gov 5. APA — flood zones (Directive 2007/60/EC) — https://apambiente.pt 6. EUMETNET OPERA — rain radar (CC BY 4.0) — https://www.eumetnet.eu 7. ECMWF — IFS open data (CC BY 4.0) — https://www.ecmwf.int 8. Open-Meteo — local weather and air quality — https://open-meteo.com 9. OpenStreetMap — base map — https://www.openstreetmap.org DISCLAIMERS - Not a government service or entity - Does not replace official emergency communications - Does not issue evacuation orders or civil protection instructions - Does not independently verify third-party data - In an emergency, always call 112 Riska was born in Serra da Estrela, after the 2022 fire. We built it because we needed it. Operated by Ecosnyp OÜ, Tallinn, Estonia · Contact: office@riska.app To know is to protect.

Screenshots

Hidrográfico +4 screens
Riska4 screens

Verdict

The call

The clearest difference is update cadence: Riska at every 4 days against Hidrográfico +'s every 6 months. Hidrográfico +'s advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Hidrográfico + ships an update every 6 months, Riska every 4 days. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 4 level
Hidrográfico + versus Riska: the parameters behind the verdict, then further details
ParameterHidrográfico +Riska
PriceFreeFree
Update frequencyEvery 6 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size76 MB32 MB
Age rating4+4+
DeveloperInstituto HidrograficoEcosnyp OÜ

In-app purchases

None

Hidrográfico +

No in-app purchases

None

Riska

No in-app purchases

Questions

Is Hidrográfico + free?
Hidrográfico + is free to download, with no in-app purchases.
Is Riska free?
Riska is free to download, with no in-app purchases.
Do Hidrográfico + or Riska have ads?
Neither Hidrográfico + nor Riska shows ads.
Which is updated more often, Hidrográfico + or Riska?
Hidrográfico + ships an update every 6 months, and Riska every 4 days. Most recently, Hidrográfico + was updated on October 25, 2026 and Riska on November 5, 2026.

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