# Field Guide to Clouds vs EMTrainer

The clearest difference is update cadence: EMTrainer at daily against Field Guide to Clouds's every 2 months. EMTrainer also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Field Guide to Clouds ships an update every 2 months, EMTrainer daily. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Field Guide to Clouds | EMTrainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (12 ratings)](https://appshunter.io/ios/app/field-guide-to-clouds/id1121399187/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free | — |
| Size | 94 MB | 56 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [University Corporation for Atmospheric Research](https://appshunter.io/developer/666875788) | [Harley Nelson](https://appshunter.io/developer/1844463582) |

## What reviewers say

### Field Guide to Clouds

[App page](https://appshunter.io/ios/app/field-guide-to-clouds/id1121399187)

Identify clouds with this portable guide. Learn their formation, names, and weather implications. Test your knowledge with interactive quizzes. Available in English and Spanish.

**Highlights:** Cloud identification, Cloud formation details, Weather prediction insights, Interactive quizzes, Bilingual support (English/Spanish)

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

**In-app purchases:** none


### EMTrainer

[App page](https://appshunter.io/ios/app/emtrainer/id6783346481)

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

**In-app purchases:** none


## Frequently asked questions

### Is Field Guide to Clouds free?

Field Guide to Clouds is free to download, with no in-app purchases.

### Is EMTrainer free?

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

### Do Field Guide to Clouds or EMTrainer have ads?

Neither Field Guide to Clouds nor EMTrainer shows ads.

### Which is updated more often, Field Guide to Clouds or EMTrainer?

Field Guide to Clouds ships an update every 2 months, and EMTrainer daily. Most recently, Field Guide to Clouds was updated on October 3, 2026 and EMTrainer on October 12, 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.*