# Viavolt vs MRT Charge

The clearest difference is update cadence: Viavolt at every 2 months against MRT Charge'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.

Viavolt ships an update every 2 months, MRT Charge every 4 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Viavolt | MRT Charge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 95 MB | 57 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | +17 | +17 |
| Developer | [Tupinamba](https://appshunter.io/developer/1499575118) | [VOLTBRAS ELETROPOSTOS AGENCIAMENTO LTDA](https://appshunter.io/developer/1465774900) |

## What reviewers say

### Viavolt

[App page](https://appshunter.io/ios/app/viavolt/id6743498848)

**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 Viavolt free?

Viavolt 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 Viavolt or MRT Charge have ads?

Neither Viavolt nor MRT Charge shows ads.

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

Viavolt ships an update every 2 months, and MRT Charge every 4 months. Most recently, Viavolt was updated on October 30, 2026 and MRT Charge on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*