# PEC vs VMU LIB

The clearest difference is update cadence: VMU LIB at monthly against PEC's every 15 months. PEC's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PEC ships an update every 15 months, VMU LIB monthly. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | PEC | VMU LIB |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Monthly** |
| Monetization | Free | — |
| Size | 23 MB | 53 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [TIT TECHNOLOGY AND SERVICE JOINT STOCK COMPANY](https://appshunter.io/developer/1450372262) | [Khang Tran](https://appshunter.io/developer/1709458766) |

## 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


### VMU LIB

[App page](https://appshunter.io/ios/app/vmu-lib/id6686406579)

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

**In-app purchases:** none


## Frequently asked questions

### Is PEC free?

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

### Is VMU LIB free?

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

### Do PEC or VMU LIB have ads?

Neither PEC nor VMU LIB shows ads.

### Which is updated more often, PEC or VMU LIB?

PEC ships an update every 15 months, and VMU LIB monthly. Most recently, PEC was updated on October 4, 2026 and VMU LIB on October 5, 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.*