# OpenSeas vs OASA

The clearest difference is rating: OpenSeas at 5.0 against OASA's 2.7. OpenSeas also leads on iOS requirement (10.0 vs 17.5). OASA's advantage is update cadence (every 2 weeks vs every 17 months) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

OpenSeas holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

OpenSeas ships an update every 17 months, OASA every 2 weeks. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | OpenSeas | OASA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/openseas/id1022371177/reviews)** | [2.7 (3 ratings)](https://appshunter.io/ios/app/oasa/id1104863353/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 13.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 81 MB | 35 MB |
| Requires iOS | **10.0** | 17.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [CRS LIKNOSS](https://appshunter.io/developer/451887897) | [Advanced Transport Telematics S.A.](https://appshunter.io/developer/1104863352) |

## What reviewers say

### OpenSeas

[App page](https://appshunter.io/ios/app/openseas/id1022371177)

Access real-time ferry schedules and port information for Greece and surrounding countries. Find arrival and departure times for all Greek, Italian, Turkish, and Albanian ports with destinations in Greece.

**Highlights:** Real-time ferry route information, Arrival and departure times, Covers Greek, Italian, Turkish, Albanian ports, Destinations in Greece, Fast and reliable

**Features:** macOS Compatibility

**In-app purchases:** none


### OASA

[App page](https://appshunter.io/ios/app/oasa/id1104863353)

Get real-time bus information for Athens, including routes, schedules, and nearby stops. Navigate to stops using your preferred map app and receive important news updates via push notifications.

**Highlights:** Real-time bus tracking, Nearby stop finder, Route and schedule viewing, Push notifications for news, Two-language support, Favorite lines and stops, Apple Watch integration

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is OpenSeas free?

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

### Is OASA free?

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

### Which has better reviews, OpenSeas or OASA?

OpenSeas is rated higher. OpenSeas averages 5.0 out of 5 from 1 ratings, while OASA averages 2.7 from 3 ratings.

### Do OpenSeas or OASA have ads?

Neither OpenSeas nor OASA shows ads.

### Which is updated more often, OpenSeas or OASA?

OpenSeas ships an update every 17 months, and OASA every 2 weeks. Most recently, OpenSeas was updated on October 10, 2026 and OASA on October 11, 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.*