# Grammar Express vs Boli

The clearest difference is in-app purchases: Boli at none against Grammar Express's 1. Boli also leads on update cadence (every 5 days vs every 149 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Grammar Express sells 1 one-off in-app purchase. Boli asks for nothing beyond the download.

Grammar Express ships an update every 149 months, Boli every 5 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Grammar Express | Boli |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 149 months | **Every 5 days** |
| Size | 9 MB | 27 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Webrich Software Limited](https://appshunter.io/developer/290203591) | [Tatras Apps](https://appshunter.io/developer/1460780931) |

## What reviewers say

### Grammar Express

[App page](https://appshunter.io/ios/app/grammar-express-correct-usage/id498943652)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Question Bank | $0.99 | one-time |


### Boli

[App page](https://appshunter.io/ios/app/boli-an-ai-learning-app/id6796336994)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grammar Express free?

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

### Is Boli free?

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

### Do Grammar Express or Boli have ads?

Neither Grammar Express nor Boli shows ads.

### Which is updated more often, Grammar Express or Boli?

Grammar Express ships an update every 149 months, and Boli every 5 days. Most recently, Grammar Express was updated on November 6, 2026 and Boli 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.*