# Focus Train vs OpenZen Doc

The clearest difference is in-app purchases: OpenZen Doc at none against Focus Train's 2. Focus Train's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Focus Train sells 2 in-app purchases, starting at $6.99 per month. OpenZen Doc asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Focus Train | OpenZen Doc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/focus-train-study-timer/id6759213973/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 200 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Eloan Tourtelier](https://appshunter.io/developer/1822243551) | [Artem Stukalo](https://appshunter.io/developer/1885779471) |

## What reviewers say

### 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 |


### OpenZen Doc

[App page](https://appshunter.io/ios/app/openzen-doc/id6794031122)

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

**In-app purchases:** none


## Frequently asked questions

### Is Focus Train free?

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

### Is OpenZen Doc free?

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

### Do Focus Train or OpenZen Doc have ads?

Neither Focus Train nor OpenZen Doc shows ads.

### Which is updated more often, Focus Train or OpenZen Doc?

Focus Train ships an update every 2 weeks, and OpenZen Doc every 2 weeks. Most recently, Focus Train was updated on November 5, 2026 and OpenZen Doc 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.*