# VNSenergy vs FastDDNS

The clearest difference is in-app purchases: VNSenergy at none against FastDDNS's 3. VNSenergy also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.0). FastDDNS's advantage is update cadence (every 11 days vs every 5 months). On price and device support there is nothing between them.

Both are free to download. FastDDNS sells 3 in-app purchases, starting at $19.99 per year. VNSenergy asks for nothing beyond the download.

VNSenergy ships an update every 5 months, FastDDNS every 11 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | VNSenergy | FastDDNS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 11 days** |
| Size | 59 MB | 57 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [AsianPowerDevicesInc](https://appshunter.io/developer/1214788661) | [Minh Nguyen](https://appshunter.io/developer/1659587744) |

## What reviewers say

### VNSenergy

[App page](https://appshunter.io/ios/app/vnsenergy/id6742780320)

**Features:** macOS Compatibility

**In-app purchases:** none


### FastDDNS

[App page](https://appshunter.io/ios/app/fastddns-ddns-and-network-tools/id6759514262)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Basic Yearly | $19.99 | per year |
| Premium Pro Yearly | $34.99 | per year |
| Premium Business Yearly | $69.99 | per year |


## Frequently asked questions

### Is VNSenergy free?

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

### Is FastDDNS free?

FastDDNS is free to download, with in-app purchases available.

### Do VNSenergy or FastDDNS have ads?

FastDDNS shows ads; VNSenergy does not.

### Which is updated more often, VNSenergy or FastDDNS?

VNSenergy ships an update every 5 months, and FastDDNS every 11 days. Most recently, VNSenergy was updated on October 28, 2026 and FastDDNS on October 28, 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.*