Forecast Alarm vs NavimetriX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Forecast Alarm
Receive wind alerts based on custom thresholds and notification frequency. This app monitors multiple weather models to keep you informed about wind conditions.
- Custom wind threshold notifications
- Configurable notification frequency
- Monitors Arpège, Arome, GFS, ECMWF, Icon models
- Monitors NAM USA, NAM Puerto Rico, NAM Haiti models
- EULA available
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Set the wind threshold at which you want to receive a notification, configure the frequency of notifications and you can rest easy. Forecast Alarm monitors the Arpège, Arome, GFS, ECMWF, Icon, ECMWF AIFS, NAM USA, NAM Puerto Rico, NAM Haiti models for you. EULA: https://www.forecastalarm.fr/apple_eula_en.html
NavimetriX
This app provides comprehensive marine navigation tools for sailors, including advanced weather forecasting, route optimization, tide predictions, and chart access. It synchronizes data across devices and integrates with onboard instruments for real-time performance tracking.
- Multi-platform cloud sync
- Weather, waves, and currents forecasting
- Advanced route optimization
- Tides & tidal currents
- Marine charts with offline access
- NMEA & AIS integration
- Performance tracking
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NavimetriX is the next-generation cross-platform navigation app built for every sailor: weather, routing, currents, NMEA, AIS, marine charts, logbook and replay, always synchronized across all your devices. Whether you are a recreational boater, an offshore racer, or a long-distance cruiser, NavimetriX brings you everything you need, everywhere: • Multi-platform & cloud sync: Plan at home on your computer or tablet and instantly retrieve all your work onboard. Settings, routes, tracks and logbook follow your account. • Logbook & replay: Time-stamped, geolocated journal (eleven entry categories, periodic positions, MOB button), regulatory PDF export with SHA-256 fingerprint. Replay your trips with the weather of the day, the AIS vessels you met and your boat's polar. • Sharing: Send a trip through a simple web link, no account needed for the recipient, as a replay or LIVE. • Weather, waves, and currents: GRIB files from the world's top models (GFS, ECMWF IFS and AIFS, ICON, AROME, Arpège, WW3, Mercator…): wind, pressure, waves, currents, temperature, precipitation, CAPE. ECMWF archives on demand, AI-forecast rain and lightning, AI weather briefing exportable to PDF. • Advanced routing: High-performance routing engine, recompute with today's weather, course tracking, mark side, RTZ (ECDIS) import/export. Compare different routes and scenarios instantly. • Polars: Extensive library, five-view editor, ORC import, Sailchart with a sail inventory per routing. • Tides & tidal currents: (where available) Integrated predictions, sixth-diurnal constituents and shallow waters. • Marine charts: GeoGarage raster charts (SHOM, UKHO, NOAA, etc.) worldwide (GeoGarage subscription required), seamless offline navigation. • NMEA & AIS integration: Onboard NMEA 0183 instruments in real time, AIS targets with alarms and detailed info, your device's GPS if needed. • Customizable instruments: Instrument bar built by drag-and-drop from 14 gauge types (chart, rudder angle, GNSS satellites, energy, polar, wind dial, compass), barometer and ten-day barograph with alarm, readable without opening a track. • Anchor watch & alarms: Anchor zone, GPS-loss, zone and AIS alarms, remote SMS alerting as an option. • Rain radar & AIS weather stations: Real-time precipitation (where available), European OPERA radar composite, observations broadcast by AIS weather stations. • Remote cockpit: Follow another boat's live NMEA and AIS over the network. • An interface made for the sea: Full-screen chart, marine red night mode, color-blind friendly palette and an energy-saving mode. NavimetriX is designed by sailors, for sailors—combining powerful features with an intuitive and modern interface, and evolving constantly with regular updates. Subscription & Premium Option: • NavimetriX offers a Premium subscription giving access to all features. • Subscription options: annual (auto-renew) • Payment is charged to your app store account at purchase confirmation. Subscription renews automatically unless canceled. • To manage your subscription, go to your App Store account. • Cancel anytime; your access continues until the end of the paid period. NavimetriX: All your navigation, always synchronized, on any device, anywhere you sail. Terms of use: https://navimetrix.com/en/terms-and-conditions/ Privacy policy: https://navimetrix.com/en/legal/
Screenshots
Verdict
The clearest difference is review sentiment: Forecast Alarm at 100% against NavimetriX's 87%. Forecast Alarm also leads on update cadence (every 4 days vs every 9 days). On price, ads, in-app purchases and monetization model 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. Forecast Alarm sells 4 in-app purchases, starting at $5.99 per month and NavimetriX sells 1 in-app purchase, starting at $69.99 per year. Whichever you choose, the download price is not the number that matters.
Forecast Alarm ships an update every 4 days, NavimetriX every 9 days. Both last shipped on October 25, 2026.
| Parameter | Forecast Alarm | NavimetriX |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 86.7% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.4 | 16.0 — better |
| Further details — not scored | ||
| Size | 54 MB | 240 MB |
| Age rating | 4+ | 4+ |
| Developer | Inia | SOFT4SAIL |
Customer experience
Forecast Alarm
NavimetriX
In-app purchases
Forecast Alarm
- Abonnement Large Mensuel$5.991 Month
- Abonnement Large Plus Hebdomadaire$8.997 Days
- Annual Subscription$12.991 Year
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- Abonnement Large Annuel$17.991 Year
NavimetriX
- Premium subscription7 Days trial$69.991 Year
Questions
Is Forecast Alarm free?
Is NavimetriX free?
Do Forecast Alarm or NavimetriX have ads?
Which is updated more often, Forecast Alarm or NavimetriX?
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