# Siren Training App vs Grammagical

The clearest difference is in-app purchases: Siren Training App at none against Grammagical's 2. Grammagical's advantage is update cadence (fortnightly vs every 15 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Grammagical sells 2 in-app purchases, starting at $5.99 per month. Siren Training App asks for nothing beyond the download.

Siren Training App ships an update every 15 months, Grammagical fortnightly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Siren Training App | Grammagical |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 36 MB | 200 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Siren Training Ltd](https://appshunter.io/developer/1447506096) | [Built By Bo Ltd](https://appshunter.io/developer/1524257644) |

## What reviewers say

### Siren Training App

[App page](https://appshunter.io/ios/app/siren-training-app/id1447506098)

Learn essential life-saving skills in First Aid and Fire Safety from experienced professionals. This app offers engaging and enjoyable training designed to equip individuals with valuable knowledge for emergencies.

**Highlights:** First Aid training, Fire Safety courses, Expert instructors, Life-saving skills, Engaging learning experience

**Features:** macOS Compatibility

**In-app purchases:** none


### Grammagical

[App page](https://appshunter.io/ios/app/grammagical/id6762902228)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grammagical Monthly | $5.99 | per month |
| Grammagical Annual | $34.99 | per year |


## Frequently asked questions

### Is Siren Training App free?

Siren Training App is free to download, with no in-app purchases.

### Is Grammagical free?

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

### Do Siren Training App or Grammagical have ads?

Neither Siren Training App nor Grammagical shows ads.

### Which is updated more often, Siren Training App or Grammagical?

Siren Training App ships an update every 15 months, and Grammagical fortnightly. Most recently, Siren Training App was updated on November 2, 2026 and Grammagical 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.*