# MO vs Voltages S

The clearest difference is price: MO at Free against Voltages S's $0.99. MO also leads on update cadence (every 2 months vs every 7 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

MO is free to download; Voltages S costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MO ships an update every 2 months, Voltages S every 7 months. The most recent releases landed on October 11, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | MO | Voltages S |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Size | 37 MB | 2 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hbits](https://appshunter.io/developer/1542180368) | [Frank Kowalewski](https://appshunter.io/developer/291362867) |

## What reviewers say

### MO

[App page](https://appshunter.io/ios/app/motus/id1606379317)

**Features:** macOS Compatibility

**In-app purchases:** none


### Voltages S

[App page](https://appshunter.io/ios/app/voltages-s/id6739780795)

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

**In-app purchases:** none


## Frequently asked questions

### Is MO free?

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

### Is Voltages S free?

Voltages S costs $0.99, with no in-app purchases.

### Do MO or Voltages S have ads?

Neither MO nor Voltages S shows ads.

### Which is updated more often, MO or Voltages S?

MO ships an update every 2 months, and Voltages S every 7 months. Most recently, MO was updated on October 11, 2026 and Voltages S on October 21, 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.*