# O3 vs Focus Train

The clearest difference is rating: O3 at 4.9 against Focus Train's 4.0. O3 also leads on review sentiment (91% vs 67%) and ratings volume (12 vs 4). Focus Train's advantage is device support (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. O3 sells 1 in-app purchase, starting at $6.00 per 7 days and Focus Train sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

O3 holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 12 and 4 respectively. Written reviews point the same way: 91% of O3's written reviews are positive against 67% of Focus Train's.

O3 ships an update every 9 days, Focus Train every 2 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | O3 | Focus Train |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (12 ratings)](https://appshunter.io/ios/app/o3-study-with-friends/id6730118317/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/focus-train-study-timer/id6759213973/reviews) |
| Number of ratings | **12** | 4 |
| Positive reviews | **90.9% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 171 MB | 200 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [O3 Platforms Limited](https://appshunter.io/developer/1850051015) | [Eloan Tourtelier](https://appshunter.io/developer/1822243551) |

## What reviewers say

### O3

[App page](https://appshunter.io/ios/app/o3-study-with-friends/id6730118317)

Discover and access 24/7 study cafes designed for focused work and social interaction. Book spaces, connect with others, and enhance your productivity in a unique cafe environment.

**Highlights:** Unlock 24/7 study cafes, Book study spaces, Work and study environments, Meet new people, Socialize in cafes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10HR COMBO | $6.00 | per 7 days |


### Focus Train

[App page](https://appshunter.io/ios/app/focus-train-study-timer/id6759213973)

Enhance your focus with immersive railway journeys and ambient soundscapes. Track your progress like a travel log, unlock new destinations, and earn medals. This app offers a unique, atmospheric approach to productivity.

**Highlights:** Immersive focus journeys with satellite landscapes, Ambient soundscapes (train, rain, ocean, forest), Gamified progress tracking and medal system, Cinematic views (satellite map or window mode), Premium aesthetics with gesture-driven interface, Privacy-focused local data storage

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $6.99 | per month |
| Yearly | $17.99 | per year |


## Frequently asked questions

### Is O3 free?

O3 is free to download, with in-app purchases available.

### Is Focus Train free?

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

### Which has better reviews, O3 or Focus Train?

O3 is rated higher. O3 averages 4.9 out of 5 from 12 ratings, while Focus Train averages 4.0 from 4 ratings.

### Do O3 or Focus Train have ads?

Neither O3 nor Focus Train shows ads.

### Which is updated more often, O3 or Focus Train?

O3 ships an update every 9 days, and Focus Train every 2 weeks. Most recently, O3 was updated on November 4, 2026 and Focus Train on October 31, 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.*