# TD UC System Interface vs PDF Maker

The clearest difference is ads: TD UC System Interface at none against PDF Maker's shown. TD UC System Interface also leads on iOS requirement (9.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 5, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TD UC System Interface | PDF Maker |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | — |
| Size | 60 MB | 5 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ESAB Group Inc](https://appshunter.io/developer/1053463271) | [Nikunj Kavathiya](https://appshunter.io/developer/1568975861) |

## 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


### PDF Maker

[App page](https://appshunter.io/ios/app/pdf-maker-img-to-pdf-covert/id6759637020)

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

**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 PDF Maker free?

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

### Do TD UC System Interface or PDF Maker have ads?

PDF Maker shows ads; TD UC System Interface does not.

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

TD UC System Interface ships an update every 3 months, and PDF Maker every 3 months. Most recently, TD UC System Interface was updated on November 5, 2026 and PDF Maker 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.*