# OPLUG vs MRT Charge

The clearest difference is ads: MRT Charge at none against OPLUG's shown. On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | OPLUG | MRT Charge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | Every 4 months |
| Size | 95 MB | 57 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | +17 |
| Developer | [TUPINAMBA ENERGIA E PUBLICIDADE LTDA](https://appshunter.io/developer/1499575118) | [VOLTBRAS ELETROPOSTOS AGENCIAMENTO LTDA](https://appshunter.io/developer/1465774900) |

## What reviewers say

### OPLUG

[App page](https://appshunter.io/ios/app/oplug/id6759061074)

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

**In-app purchases:** none


### MRT Charge

[App page](https://appshunter.io/ios/app/mrt-charge/id6760348935)

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

**In-app purchases:** none


## Frequently asked questions

### Is OPLUG free?

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

### Is MRT Charge free?

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

### Do OPLUG or MRT Charge have ads?

OPLUG shows ads; MRT Charge does not.

### Which is updated more often, OPLUG or MRT Charge?

OPLUG ships an update every 4 months, and MRT Charge every 4 months. Most recently, OPLUG was updated on October 28, 2026 and MRT Charge on October 25, 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.*