# OASA vs Hellenic Train

The clearest difference is ads: OASA at none against Hellenic Train's shown. OASA also leads on update cadence (every 2 weeks vs monthly). Hellenic Train's advantage is iOS requirement (12.0 vs 17.5). On price, in-app purchases and device support there is nothing between them.

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

OASA ships an update every 2 weeks, Hellenic Train monthly. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | OASA | Hellenic Train |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/oasa/id1104863353/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 13.8% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free | — |
| Size | 35 MB | 134 MB |
| Requires iOS | 17.5 | **12.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Advanced Transport Telematics S.A.](https://appshunter.io/developer/1104863352) | [HELLENIC TRAIN S.A.](https://appshunter.io/developer/1290936112) |

## What reviewers say

### 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


### Hellenic Train

[App page](https://appshunter.io/ios/app/hellenic-train/id1600289122)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OASA free?

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

### Is Hellenic Train free?

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

### Do OASA or Hellenic Train have ads?

Hellenic Train shows ads; OASA does not.

### Which is updated more often, OASA or Hellenic Train?

OASA ships an update every 2 weeks, and Hellenic Train monthly. Most recently, OASA was updated on September 18, 2026 and Hellenic Train on September 8, 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.*