# TD UC System Interface vs Pre

The clearest difference is iOS requirement: TD UC System Interface at 9.0 against Pre's 13.0. 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.

TD UC System Interface ships an update every 3 months, Pre every 2 months. The most recent releases landed on October 17, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TD UC System Interface | Pre |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/td-uc-system-interface/id1599254238/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 60 MB | 46 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ESAB Group Inc](https://appshunter.io/developer/1053463271) | [Carrier Corporation](https://appshunter.io/developer/542004889) |

## What reviewers say

### TD UC System Interface

[App page](https://appshunter.io/ios/app/td-uc-system-interface/id1599254238)

Monitor and control ESAB iSERIES Plasma Power Supplies in real-time. Add welding machine details and adjust power supply parameters directly from your mobile device.

**Highlights:** Real-time monitoring, Parameter control, Add welding machine details, View power supply parameters, Mobile device control

**In-app purchases:** none


### Pre

[App page](https://appshunter.io/ios/app/pre-startup/id6479706553)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TD UC System Interface free?

TD UC System Interface is free to download, with no in-app purchases.

### Is Pre free?

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

### Do TD UC System Interface or Pre have ads?

Neither TD UC System Interface nor Pre shows ads.

### Which is updated more often, TD UC System Interface or Pre?

TD UC System Interface ships an update every 3 months, and Pre every 2 months. Most recently, TD UC System Interface was updated on October 17, 2026 and Pre on October 25, 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.*