# Fast vs Voltn

The clearest difference is iOS requirement: Fast at 11.0 against Voltn's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Fast ships an update every 3 months, Voltn every 2 months. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Fast | Voltn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 8 MB | 31 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DOCAPOSTE FAST](https://appshunter.io/developer/1803359163) | [NetExplorer](https://appshunter.io/developer/1137647458) |

## What reviewers say

### Fast

[App page](https://appshunter.io/ios/app/fast-parapheur/id568376495)

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

**In-app purchases:** none


### Voltn

[App page](https://appshunter.io/ios/app/voltn/id6761543765)

**In-app purchases:** none


## Frequently asked questions

### Is Fast free?

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

### Is Voltn free?

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

### Do Fast or Voltn have ads?

Neither Fast nor Voltn shows ads.

### Which is updated more often, Fast or Voltn?

Fast ships an update every 3 months, and Voltn every 2 months. Most recently, Fast was updated on October 2, 2026 and Voltn on October 3, 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.*