# Chemle vs LETS CROSSING

The clearest difference is in-app purchases: Chemle at none against LETS CROSSING's 5. Chemle also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. LETS CROSSING sells 5 in-app purchases, starting at $3.49 per month. Chemle asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Chemle | LETS CROSSING |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (24 ratings)](https://appshunter.io/ios/app/lets-crossing/id6615077678/reviews)** |
| Number of ratings | — | **24** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 65 MB | 114 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jan Stepien](https://appshunter.io/developer/1644539739) | [Masao Nakajima](https://appshunter.io/developer/1537219074) |

## What reviewers say

### Chemle

[App page](https://appshunter.io/ios/app/chemle/id6446223004)

**Features:** macOS Compatibility

**In-app purchases:** none


### LETS CROSSING

[App page](https://appshunter.io/ios/app/lets-crossing/id6615077678)

Experience realistic railroad crossings from around the world, enhanced by generative AI. Capture unique, AI-generated train photography images. Subscribe for premium features and collect your own original AI art.

**Highlights:** Realistic railroad crossing simulations, AI-generated train photography, Collect unique AI art, Multiple country simulations, Subscription for premium features

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Standard | $3.49 | per month |
| Monthly Premium | $4.99 | per month |
| Additional Passes | $2.49 | one-time |
| Trial | $2.49 | one-time |
| Purchase train photo passes | $3.99 | one-time |


## Frequently asked questions

### Is Chemle free?

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

### Is LETS CROSSING free?

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

### Do Chemle or LETS CROSSING have ads?

LETS CROSSING shows ads; Chemle does not.

### Which is updated more often, Chemle or LETS CROSSING?

Chemle ships an update every 2 weeks, and LETS CROSSING every 2 weeks. Most recently, Chemle was updated on October 4, 2026 and LETS CROSSING on October 7, 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.*