Chemle vs LETS CROSSING
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chemle
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Test your knowledge of chemistry with this fun and educational game. You'll have five attempts to guess the secret chemistry formula. Each round, you'll be presented with a series of blank spaces representing a chemical term. Use your knowledge of chemical elements, compounds, and reactions to guess the correct formula. The game will provide helpful hints, such as number of correct letters in your guess. But be careful - just like in chemistry, a wrong guess can lead to disastrous results! Chemle is perfect for anyone looking to expand their chemistry knowledge and enjoy a fun and challenging word game. Download now and start guessing!
LETS CROSSING
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.
- Realistic railroad crossing simulations
- AI-generated train photography
- Collect unique AI art
- Multiple country simulations
- Subscription for premium features
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Play at your favorite railroad crossing anytime, anywhere! Experience the "Train Photography Simulation App" powered by cutting-edge generative AI technology. Collect your own unique and realistic AI-generated train photography images! This app lets you experience railroad crossings from various countries, recreated with stunning realism. By tapping the camera button, you can also obtain realistic train photography images generated by state-of-the-art generative AI technology. Additionally, by subscribing to a paid plan, you'll receive train photography tickets, allowing you to collect your own original AI-generated train photography images. Terms and Privacy Policy: https://nakajimamasao-appstudio.web.app/terms/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Chemle | LETS CROSSING |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.2 (24 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 24 — better |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 65 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | Jan Stepien | Masao Nakajima |
In-app purchases
Chemle
No in-app purchases
LETS CROSSING
- Monthly Standard$3.491 Month
- Monthly Premium$4.991 Month
- Additional Passes$2.49
- Trial$2.49
- Purchase train photo passes$3.99
