# E vs MRTA E

The clearest difference is update cadence: MRTA E at monthly against E's every 4 months. 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.

E ships an update every 4 months, MRTA E monthly. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | E | MRTA E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Size | 19 MB | 27 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 9+ |
| Developer | [BOOKDOSE COMPANY LIMITED](https://appshunter.io/developer/459445000) | [Mass Rapid Transit Authority of Thailand](https://appshunter.io/developer/1494832322) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-tech-e-library/id1067782905)

**Features:** macOS Compatibility

**In-app purchases:** none


### MRTA E

[App page](https://appshunter.io/ios/app/mrta-e-library/id6745213881)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is E free?

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

### Is MRTA E free?

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

### Do E or MRTA E have ads?

Neither E nor MRTA E shows ads.

### Which is updated more often, E or MRTA E?

E ships an update every 4 months, and MRTA E monthly. Most recently, E was updated on September 9, 2026 and MRTA E on September 18, 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.*