# 01 Zero One vs Words on a Train

The clearest difference is ads: Words on a Train at none against 01 Zero One's shown. Words on a Train also leads on update cadence (daily vs every 24 months) and monetization model (free vs ad-supported). 01 Zero One's advantage is iOS requirement (9.0 vs 18.2). On price, rating, ratings volume and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for 01 Zero One against 5.0 for Words on a Train. Both are backed by a comparable volume of ratings — 4 and 4 respectively.

01 Zero One ships an update every 24 months, Words on a Train daily. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 01 Zero One | Words on a Train |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/01-zero-one/id1359573792/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/words-on-a-train/id6743735360/reviews) |
| Number of ratings | 4 | 4 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 24 months | **Daily** |
| Monetization | Ad-supported | **Free** |
| Size | 41 MB | 34 MB |
| Requires iOS | **9.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anas Almomany](https://appshunter.io/developer/1359573791) | [Michael O’Brien](https://appshunter.io/developer/1451150390) |

## What reviewers say

### 01 Zero One

[App page](https://appshunter.io/ios/app/01-zero-one/id1359573792)

A simple and easy numbers game where players tap zero or one based on the first digit of incoming numbers. Avoid tapping incorrect numbers to progress. It's a quick test of reflexes and number recognition.

**Highlights:** Tap zero or one, React to incoming numbers, Avoid wrong taps, Simple gameplay, Number recognition

**Features:** macOS Compatibility

**In-app purchases:** none


### Words on a Train

[App page](https://appshunter.io/ios/app/words-on-a-train/id6743735360)

Spell valid English words using letters from passing train cars. The game speeds up as you progress, offering a challenge with ten-letter words. Share your high scores and compete with friends.

**Highlights:** Spell words from passing train cars, Increasing speed and challenge, Ten-letter word opportunities, High score sharing, Challenge friends

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 01 Zero One free?

01 Zero One is free to download, with no in-app purchases.

### Is Words on a Train free?

Words on a Train is free to download, with no in-app purchases.

### Which has better reviews, 01 Zero One or Words on a Train?

01 Zero One and Words on a Train are both rated 5.0 out of 5 on the App Store, from 4 and 4 ratings respectively.

### Do 01 Zero One or Words on a Train have ads?

01 Zero One shows ads; Words on a Train does not.

### Which is updated more often, 01 Zero One or Words on a Train?

01 Zero One ships an update every 24 months, and Words on a Train daily. Most recently, 01 Zero One was updated on October 5, 2026 and Words on a Train on October 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.*