# WE Catalog vs Ersa TRACE

The clearest difference is review sentiment: WE Catalog at 100% against Ersa TRACE's 75%. Ersa TRACE's advantage is iOS requirement (12.0 vs 17.6). 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.

WE Catalog ships an update every 9 months, Ersa TRACE every 5 months. Both last shipped on October 2, 2026.

## The numbers

| Metric | WE Catalog | Ersa TRACE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/we-catalog/id1439172334/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 months** |
| Monetization | Free | Free |
| Size | 53 MB | 38 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wuerth Elektronik eiSos GmbH & Co. KG](https://appshunter.io/developer/962754647) | [Ersa GmbH](https://appshunter.io/developer/1484598243) |

## What reviewers say

### WE Catalog

[App page](https://appshunter.io/ios/app/we-catalog/id1439172334)

This app helps users select electronic components for their projects. It offers a QR-code scanner for paper catalogs and provides access to a wide range of components like ferrites, inductors, and capacitors.

**Highlights:** Component selection tool, QR-code scanner, Ferrite selection, Inductor selection, Capacitor selection, Resistor selection, LED selection

**Features:** macOS Compatibility

**In-app purchases:** none


### Ersa TRACE

[App page](https://appshunter.io/ios/app/ersa-trace/id1552856743)

This app enables smart operation of an IoT soldering station via smartphone or web application. It provides real-time temperature display, parameter control for single or multiple stations, and extensive traceability functions.

**Highlights:** Real-time temperature display, Target temperature setting, Soldering parameter control, Multi-station management, Web application integration, Traceability functions

**In-app purchases:** none


## Frequently asked questions

### Is WE Catalog free?

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

### Is Ersa TRACE free?

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

### Do WE Catalog or Ersa TRACE have ads?

Neither WE Catalog nor Ersa TRACE shows ads.

### Which is updated more often, WE Catalog or Ersa TRACE?

WE Catalog ships an update every 9 months, and Ersa TRACE every 5 months. Most recently, WE Catalog was updated on October 2, 2026 and Ersa TRACE on October 2, 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.*