# ObsEnMer vs Ready4Sea

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.

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.

## The numbers

| Metric | ObsEnMer | Ready4Sea |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/obsenmer/id1162065009/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/ready4sea/id1626746852/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | **Free** | Freemium |
| Size | 185 MB | 83 MB |
| Requires iOS | 14.0 | 14.0.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Altitude Cherbourg](https://appshunter.io/developer/512464175) | [SAS Ready4Sea](https://appshunter.io/developer/1626746854) |

## What reviewers say

### ObsEnMer

[App page](https://appshunter.io/ios/app/obsenmer/id1162065009)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Ready4Sea

[App page](https://appshunter.io/ios/app/ready4sea/id1626746852)

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.

**Highlights:** Asset maintenance scheduling, Customized task reminders, Comprehensive maintenance logs, Onboard equipment inventory, Engine hour tracking, Pre-defined checklists for operations

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ready4Sea Standard | $39.99 | per year |
| Ready4Sea Premium | $79.99 | per year |


## Frequently asked questions

### Is ObsEnMer free?

ObsEnMer is free to download, with no in-app purchases.

### Is Ready4Sea free?

Ready4Sea is free to download, with in-app purchases available.

### Which has better reviews, ObsEnMer or Ready4Sea?

ObsEnMer and Ready4Sea are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do ObsEnMer or Ready4Sea have ads?

Neither ObsEnMer nor Ready4Sea shows ads.

### Which is updated more often, ObsEnMer or Ready4Sea?

ObsEnMer ships an update every 4 months, and Ready4Sea fortnightly. Most recently, ObsEnMer was updated on September 17, 2026 and Ready4Sea on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*