# PolyPi AI vs Learn Khmer

The clearest difference is iOS requirement: PolyPi AI at 12.0 against Learn Khmer's 16.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PolyPi AI sells 3 one-off in-app purchases and Learn Khmer sells 6 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | PolyPi AI | Learn Khmer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 159 MB | 104 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NGO XUAN DAI](https://appshunter.io/developer/1445334529) | [Dinh Thang Tran](https://appshunter.io/developer/1769927807) |

## What reviewers say

### PolyPi AI

[App page](https://appshunter.io/ios/app/polypi-ai/id6468901370)

Prepare for TOEIC and IELTS exams with an AI-powered English learning assistant. Practice speaking and writing, receive grammar corrections, and get personalized lesson recommendations based on your performance. Optimize your learning journey with accurate scoring and in-depth analysis.

**Highlights:** AI-powered exam preparation, Speaking and writing practice, Grammar correction and suggestions, Automatic translation, Scored practice sessions, Personalized lesson recommendations, Unlimited essay grading

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gói Point | $29.99 | one-time |
| Gói 3 tháng | $29.99 | one-time |
| Gói 6 tháng | $49.99 | one-time |


### Learn Khmer

[App page](https://appshunter.io/ios/app/learn-khmer-swiftlingo/id6787504404)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SwiftLingo Premium Weekly | $3.99 | per 7 days |
| SwiftLingo Premium Monthly | $8.99 | per month |
| SwiftLingo Premium 3 Months | $19.99 | per 3 months |
| SwiftLingo Premium 6 Months | $32.99 | per 6 months |
| SwiftLingo Premium Yearly | $49.99 | per year |
| SwiftLingo Premium Lifetime | $249.99 | one-time |


## Frequently asked questions

### Is PolyPi AI free?

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

### Is Learn Khmer free?

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

### Do PolyPi AI or Learn Khmer have ads?

Neither PolyPi AI nor Learn Khmer shows ads.

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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.*