# LMS vs ECE Reviewer (PERCApp)

The clearest difference is in-app purchases: LMS at none against ECE Reviewer (PERCApp)'s 11. LMS also leads on ads (none vs shown) and iOS requirement (12.2 vs 14.0). On price, update cadence and device support there is nothing between them.

Both are free to download. ECE Reviewer (PERCApp) sells 11 one-off in-app purchases. LMS asks for nothing beyond the download.

LMS ships an update monthly, ECE Reviewer (PERCApp) every 3 weeks. The most recent releases landed on September 16, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | LMS | ECE Reviewer (PERCApp) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 108 MB | 203 MB |
| Requires iOS | **12.2** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Centralized Cloud Computing International Inc.](https://appshunter.io/developer/1681958692) | [PERCDC Learnhub Inc.](https://appshunter.io/developer/1270150019) |

## What reviewers say

### LMS

[App page](https://appshunter.io/ios/app/lms-msc-mobile/id6449724182)

**Features:** macOS Compatibility

**In-app purchases:** none


### ECE Reviewer (PERCApp)

[App page](https://appshunter.io/ios/app/ece-reviewer-percapp/id6596800930)

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1000 Percs | $0.99 | one-time |
| 2,500 Percs + Bonus 100 Percs | $0.99 | one-time |
| 5000 Percs + Bonus 500 Percs | $1.99 | one-time |
| 10000 Percs + Bonus 2000 Percs | $2.99 | one-time |
| 25000 Percs + Bonus 10000Percs | $7.99 | one-time |
| ELEX | $14.99 | one-time |
| GEAS | $14.99 | one-time |
| ESAT | $14.99 | one-time |
| 50000 Percs + Bonus 30000Percs | $14.99 | one-time |
| MATH | $19.99 | one-time |
| All Subjects | $59.99 | one-time |


## Frequently asked questions

### Is LMS free?

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

### Is ECE Reviewer (PERCApp) free?

ECE Reviewer (PERCApp) is free to download, with in-app purchases available.

### Do LMS or ECE Reviewer (PERCApp) have ads?

ECE Reviewer (PERCApp) shows ads; LMS does not.

### Which is updated more often, LMS or ECE Reviewer (PERCApp)?

LMS ships an update monthly, and ECE Reviewer (PERCApp) every 3 weeks. Most recently, LMS was updated on September 16, 2026 and ECE Reviewer (PERCApp) on June 11, 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.*