# IELTS Slay vs CalmLingo

The clearest difference is in-app purchases: CalmLingo at none against IELTS Slay's 1. IELTS Slay's advantage is iOS requirement (13.1 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. IELTS Slay sells 1 one-off in-app purchase. CalmLingo asks for nothing beyond the download.

IELTS Slay ships an update weekly, CalmLingo every 5 days. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | IELTS Slay | CalmLingo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ielts-slay/id6743145873/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 82 MB |
| Requires iOS | **13.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CommonTown Pte Ltd](https://appshunter.io/developer/425121361) | [Anuradha Welivita](https://appshunter.io/developer/1489693225) |

## What reviewers say

### IELTS Slay

[App page](https://appshunter.io/ios/app/ielts-slay/id6743145873)

Enhance your English vocabulary and grammar skills for the IELTS exam. This adaptive learning app uses a sophisticated algorithm to tailor quizzes to your proficiency level, helping you improve quickly. Developed by experts with over 20 years of educational technology experience.

**Highlights:** Adaptive quiz questions, Rasch algorithm for personalized learning, Vocabulary and grammar practice, IELTS level improvement, Developed by educational technology experts

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $4.99 | one-time |


### CalmLingo

[App page](https://appshunter.io/ios/app/calmlingo-language-learning/id6760699516)

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

**In-app purchases:** none


## Frequently asked questions

### Is IELTS Slay free?

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

### Is CalmLingo free?

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

### Do IELTS Slay or CalmLingo have ads?

Neither IELTS Slay nor CalmLingo shows ads.

### Which is updated more often, IELTS Slay or CalmLingo?

IELTS Slay ships an update weekly, and CalmLingo every 5 days. Most recently, IELTS Slay was updated on October 11, 2026 and CalmLingo on October 18, 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.*