# Basic and Advanced Grammar vs Readology

The clearest difference is update cadence: Readology at every 3 weeks against Basic and Advanced Grammar's every 81 months. Basic and Advanced Grammar's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Basic and Advanced Grammar sells 2 in-app purchases, starting at $4.99 per month and Readology sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Basic and Advanced Grammar ships an update every 81 months, Readology every 3 weeks. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Basic and Advanced Grammar | Readology |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 81 months | **Every 3 weeks** |
| Size | 33 MB | 89 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [irin Tanrverdi](https://appshunter.io/developer/1494693885) | [Paul Maxwell](https://appshunter.io/developer/6772820283) |

## What reviewers say

### Basic and Advanced Grammar

[App page](https://appshunter.io/ios/app/basic-and-advanced-grammar/id1495258061)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grammar Premium Monthly | $4.99 | per month |
| Grammar Premium Yearly | $29.99 | per year |


### Readology

[App page](https://appshunter.io/ios/app/readology/id6775593086)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Supporter | $2.99 | per month |
| Annual Supporter | $12.99 | per year |


## Frequently asked questions

### Is Basic and Advanced Grammar free?

Basic and Advanced Grammar is free to download, with in-app purchases available.

### Is Readology free?

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

### Do Basic and Advanced Grammar or Readology have ads?

Both Basic and Advanced Grammar and Readology show ads.

### Which is updated more often, Basic and Advanced Grammar or Readology?

Basic and Advanced Grammar ships an update every 81 months, and Readology every 3 weeks. Most recently, Basic and Advanced Grammar was updated on October 6, 2026 and Readology on October 8, 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.*