# PEC vs Onluyen

The clearest difference is in-app purchases: PEC at none against Onluyen's 5. PEC also leads on iOS requirement (12.0 vs 15.1). Onluyen's advantage is update cadence (every 11 days vs every 15 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Onluyen sells 5 in-app purchases, starting at $4.49 per month. PEC asks for nothing beyond the download.

PEC ships an update every 15 months, Onluyen every 11 days. The most recent releases landed on September 17, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | PEC | Onluyen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.9 (210 ratings)](https://appshunter.io/ios/app/onluyen/id1506873010/reviews)** |
| Number of ratings | — | **210** |
| Positive reviews | 14.3% of reviews | **18.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 11 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 54 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [TIT TECHNOLOGY AND SERVICE JOINT STOCK COMPANY](https://appshunter.io/developer/1450372262) | [Edmicro](https://appshunter.io/developer/1506873009) |

## What reviewers say

### PEC

[App page](https://appshunter.io/ios/app/pec/id1487435351)

This electronic contact book is designed for parents and students of PEC Language and Study Abroad Center. It provides access to personalized learning paths, detailed schedules, fee information, teacher feedback, attendance records, and center announcements.

**Highlights:** Personalized learning paths, Detailed class schedules, Tuition fee details, Exam results with teacher feedback, Student attendance tracking, Center announcements, Student feedback

**Features:** macOS Compatibility

**In-app purchases:** none


### Onluyen

[App page](https://appshunter.io/ios/app/onluyen/id1506873010)

This app offers personalized practice and testing for Vietnamese high school students across all subjects. It features a vast question bank, video explanations, and progress tracking to aid in exam preparation and academic improvement.

**Highlights:** Personalized practice by knowledge unit, Over 120,000 questions with detailed solutions, Video lectures and explanations for questions, Practice tests for 45-minute, semester, and national exams, Thousands of randomly generated and curated tests, Progress tracking and detailed performance reports, Bookmark difficult questions and ask for help

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Onluyen - 30 days | $4.49 | per month |
| Onluyen 1 month | $4.99 | per month |
| Onluyen - 6 month | $21.99 | per 6 months |
| Onluyen - 1 year | $39.99 | per year |
| Onluyen 1 năm | $59.99 | per year |


## Frequently asked questions

### Is PEC free?

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

### Is Onluyen free?

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

### Do PEC or Onluyen have ads?

Neither PEC nor Onluyen shows ads.

### Which is updated more often, PEC or Onluyen?

PEC ships an update every 15 months, and Onluyen every 11 days. Most recently, PEC was updated on September 17, 2026 and Onluyen on September 30, 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.*