# Stellar Logistic vs PolyPi AI

The clearest difference is in-app purchases: Stellar Logistic at none against PolyPi AI's 3. PolyPi AI's advantage is update cadence (every 3 days vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PolyPi AI sells 3 one-off in-app purchases. Stellar Logistic asks for nothing beyond the download.

Stellar Logistic ships an update every 9 months, PolyPi AI every 3 days. The most recent releases landed on September 8, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | Stellar Logistic | PolyPi AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 159 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Tech Circles Sdn Bhd](https://appshunter.io/developer/1601571408) | [NGO XUAN DAI](https://appshunter.io/developer/1445334529) |

## What reviewers say

### Stellar Logistic

[App page](https://appshunter.io/ios/app/stellar-logistic/id6444673101)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Stellar Logistic free?

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

### Is PolyPi AI free?

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

### Do Stellar Logistic or PolyPi AI have ads?

Neither Stellar Logistic nor PolyPi AI shows ads.

### Which is updated more often, Stellar Logistic or PolyPi AI?

Stellar Logistic ships an update every 9 months, and PolyPi AI every 3 days. Most recently, Stellar Logistic was updated on September 8, 2026 and PolyPi AI on June 3, 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.*