# Dynu vs PSA Systems

The clearest difference is update cadence: Dynu at monthly against PSA Systems's every 3 months. PSA Systems's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Dynu ships an update monthly, PSA Systems every 3 months. The most recent releases landed on September 21, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Dynu | PSA Systems |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/psa-systems/id1586242962/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | Free |
| Size | 10 MB | 341 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dynu Systems, Inc.](https://appshunter.io/developer/1481158786) | [VizVibe LLC](https://appshunter.io/developer/1400508801) |

## What reviewers say

### Dynu

[App page](https://appshunter.io/ios/app/dynu/id1481158787)

Manage your dynamic DNS service and other account features on the go. This utility automatically detects IP address changes and updates your domain name mapping. It supports both IPv4 and IPv6 updates, making it essential for maintaining your dynamic DNS service.

**Highlights:** Dynamic DNS service management, Automatic IP address detection, IPv4 and IPv6 updates, Domain name mapping, Group support

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

**In-app purchases:** none


### PSA Systems

[App page](https://appshunter.io/ios/app/psa-systems/id1586242962)

This application serves as a learning and business resource for users of specific systems. It provides access to manuals and tools, alongside augmented reality features for marketing materials.

**Highlights:** Learning resource, Business resource, Manuals and tools, Augmented reality features, Marketing material integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dynu free?

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

### Is PSA Systems free?

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

### Do Dynu or PSA Systems have ads?

Neither Dynu nor PSA Systems shows ads.

### Which is updated more often, Dynu or PSA Systems?

Dynu ships an update monthly, and PSA Systems every 3 months. Most recently, Dynu was updated on September 21, 2026 and PSA Systems on October 4, 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.*