# Orrori grammaticali vs M37

The clearest difference is update cadence: M37 at every 3 months against Orrori grammaticali's every 7 months. Orrori grammaticali's advantage is iOS requirement (12.0 vs 17.10). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Orrori grammaticali sells 1 one-off in-app purchase and M37 sells 4 in-app purchases, starting at $6.00 per month. Whichever you choose, the download price is not the number that matters.

Orrori grammaticali ships an update every 7 months, M37 every 3 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Orrori grammaticali | M37 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Size | 23 MB | 133 MB |
| Requires iOS | **12.0** | 17.10 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Roberto De Lorenzo](https://appshunter.io/developer/692760870) | [Accademia Dizione Italiana srl](https://appshunter.io/developer/1746689036) |

## What reviewers say

### Orrori grammaticali

[App page](https://appshunter.io/ios/app/orrori-grammaticali/id1527101587)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sblocca tutti gli esercizi | $1.99 | one-time |


### M37

[App page](https://appshunter.io/ios/app/m37/id6450952326)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mensile | $6.00 | per month |
| Trimestrale | $19.00 | per 3 months |
| Semestrale | $35.00 | per 6 months |
| Annuale | $59.00 | per year |


## Frequently asked questions

### Is Orrori grammaticali free?

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

### Is M37 free?

M37 is free to download, with in-app purchases available.

### Do Orrori grammaticali or M37 have ads?

Neither Orrori grammaticali nor M37 shows ads.

### Which is updated more often, Orrori grammaticali or M37?

Orrori grammaticali ships an update every 7 months, and M37 every 3 months. Most recently, Orrori grammaticali was updated on October 27, 2026 and M37 on October 25, 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.*