ObsEnMer vs Ready4Sea
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ObsEnMer
Report marine animal sightings with this app. It's designed for boaters, professionals, and associations to contribute to citizen science programs. Help researchers understand marine life and climate change impacts.
- Report marine animal observations
- Two involvement levels for boaters
- Expert level for trained contributors
- Species identification guide
- Observation history
- Species identification quizzes
- Share observations on social media
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OBSenMER vous permet de signaler vos observations d’animaux en mer. OBSenMER est une application à destination des plaisanciers, des professionnels et des associations, qui cherchent un moyen de signaler leurs observations de faune marine en mer. OBSenMER est gérée par le programme de Sciences Participatives du GECC et Cybelle Méditerranée. Cétacés, raies, requins, poissons pélagiques, tortues et méduses sont les groupes d’espèces étudiées par le programme. Des méthodes simples ne nécessitant aucune formation préalable vous sont proposées pour nous transmettre vos observations. Toutes ces informations sont ensuite centralisées et mises librement à disposition. Elles servent à mieux comprendre l’écologie des espèces étudiées et les impacts des changements globaux (ex. réchauffement climatique), et permettent d’agir pour la préservation des espèces emblématiques et protégées. Caractéristiques de l’application : -Deux niveaux d’implication pour la signalisation des observations pour les plaisanciers, -Un niveau expert réservé aux contributeurs formés, -Un guide d’identification pour reconnaître les espèces, -Un historique de vos observations, -Des quizz pour vous entraîner à les reconnaître et les connaître, -La possibilité de partager vos observations sur les réseaux sociaux. L'utilisation continue du GPS en arrière-plan peut réduire considérablement la durée de vie de la batterie.
Ready4Sea
This app helps you manage the maintenance and upkeep of your boat, car, or home. It provides customized schedules, reminders, and detailed logs for all your assets, ensuring they are always in top condition and increasing their resale value.
- Asset maintenance scheduling
- Customized task reminders
- Comprehensive maintenance logs
- Onboard equipment inventory
- Engine hour tracking
- Pre-defined checklists for operations
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The maintenance assistant and digital toolbox for all your assets that require upkeep, right in your hands wherever you are. Do you own a boat? Get ready to sail with confidence thanks to a seaworthy boat “ready for sea”! Boating safely and enjoying your time on the water has never been easier. Discover how Ready4Sea can transform your boating trips. Have you just passed your boating license? Are you an experienced skipper? Ensure the safety of your crew, whether you sail a powerboat, a racing sailboat, a leisure fishing boat or a bluewater cruising yacht. With your boat's health record at hand, you can leave the harbor with your mind free to concentrate on your navigation. — 1. Sail in complete security and peace of mind — Leave nothing to chance. Create a customized maintenance schedule for your boat, taking into account its specific equipment and crucial deadlines. Set timely reminders for recurring tasks, so you don't forget a thing. — 2. Spend more time on the water — From hauling out to winterization, from casting off to safety equipment, we've got the right checklist for you. Set yourself free from maintenance, repair and servicing worries. Now enjoy every outing on board. — 3. Increase your boat’s resale value — The app keeps an accurate and comprehensive maintenance log for you. Every job can be recorded in the journal. Have you carried out a repair on board? Have you serviced a piece of equipment? Log it. Also ask the boating professional who does the maintenance of your boat to make notes of the work carried out. Your boat will instill confidence when you rent it out. And it will be much easier to sell. Ready4Sea is much more than a boating app. It's your essential partner for successful, hassle-free sailing. Your boat is now truly "ready for sea"! — Ready4Sea's main functionalities are : * Onboard equipment management: Inventory, important data and document storage. * Boat maintenance plan: Calendar of recurring or one-off tasks to be carried out, and synchronization of upcoming events in your personal calendar app. * Logbook: Record all services, repairs and boat jobs in your boat’s technical logbook. * Engine logbook: Track engine hours and anticipate periodic maintenance. * Boat joblist: Follow up on all tasks and jobs in one place and share them with others. * Checks and controls at every stage: A checklist for each major operation (hauling out, wintering...), as well as for checking safety equipment, and for everyday situations on board (casting off, returning to port...) — This free logbook app is aimed at boaties, yachties, co-owners, clubs and charter skippers. It's also the ideal tool for yachting charter companies, rental management agencies, boatyards and marine mechanics. You can use it to keep track of all types of boats and yachts: whether a speedboat, sailboat, RIB, trawler, classic boat or multihull (catamaran or trimaran). Whether you take to the water for coastal cruising, leisure fishing, competing in regattas, powerboating or even setting sail for ocean passages, your boat needs to be prepared and checked before leaving port. This boating app can even be used for inland waterways canal boats or leisure craft! Thousands of boaters already track the upkeep of their equipment: engine, sails, inflatable, liferaft, lifejackets, fire extinguishers, stove, batteries, tender, rigging, windlass, outboard, electronics, VHF radio and NAVTEX receiver… You too can monitor it all in one place. Ready4Sea is just as essential on board as a marine weather or tide prediction app, an almanac, a pilot guide or an anchor alarm. It’s the logical next step after getting your boater’s license and buying a boat. — Ready4Sea was unveiled at the last Paris Boat Show, and has since been featured in numerous nautical and yachting magazines such as Multihulls World.
Screenshots
Verdict
The clearest difference is in-app purchases: ObsEnMer at none against Ready4Sea's 2. Ready4Sea's advantage is review sentiment (100% vs 67%) and update cadence (fortnightly vs every 4 months). On price, rating, ratings volume and ads 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. Ready4Sea sells 2 in-app purchases, starting at $39.99 per year. ObsEnMer asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for ObsEnMer against 5.0 for Ready4Sea. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 67% of ObsEnMer's written reviews are positive against 100% of Ready4Sea's.
ObsEnMer ships an update every 4 months, Ready4Sea fortnightly. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.
| Parameter | ObsEnMer | Ready4Sea |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 14.0.0 |
| Further details — not scored | ||
| Size | 185 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | Altitude Cherbourg | SAS Ready4Sea |
Customer experience
ObsEnMer
Ready4Sea
In-app purchases
ObsEnMer
No in-app purchases
Ready4Sea
- Ready4Sea Standard$39.991 Year
- Ready4Sea Premium$79.991 Year









