# TD UC System Interface vs Profit On Site

The clearest difference is iOS requirement: TD UC System Interface at 9.0 against Profit On Site's 15.1. 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.

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

## The numbers

| Metric | TD UC System Interface | Profit On Site |
| --- | --- | --- |
| 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 3 months |
| Monetization | Free | — |
| Size | 60 MB | 40 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [ESAB Group Inc](https://appshunter.io/developer/1053463271) | [Piping Logistics](https://appshunter.io/developer/1677360438) |

## 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


### Profit On Site

[App page](https://appshunter.io/ios/app/profit-on-site/id6446322545)

**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 Profit On Site free?

Profit On Site is free to download, with no in-app purchases.

### Do TD UC System Interface or Profit On Site have ads?

Neither TD UC System Interface nor Profit On Site shows ads.

### Which is updated more often, TD UC System Interface or Profit On Site?

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