# iSlipstick vs WE Catalog

The clearest difference is update cadence: iSlipstick at every 3 months against WE Catalog's every 9 months. iSlipstick also leads on ratings volume (3 vs 1) and iOS requirement (12.0 vs 17.6). WE Catalog's advantage is review sentiment (100% vs 90%). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for iSlipstick against 5.0 for WE Catalog. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews are what separate them: 90% of iSlipstick's written reviews are positive against 100% of WE Catalog's.

iSlipstick ships an update every 3 months, WE Catalog every 9 months. The most recent releases landed on August 12, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | iSlipstick | WE Catalog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/islipstick/id324560822/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/we-catalog/id1439172334/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 90.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free | Free |
| Size | 36 MB | 53 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sam Virgillo](https://appshunter.io/developer/324560825) | [Wuerth Elektronik eiSos GmbH & Co. KG](https://appshunter.io/developer/962754647) |

## What reviewers say

### iSlipstick

[App page](https://appshunter.io/ios/app/islipstick/id324560822)

This app provides a suite of essential electronic formula calculators and unit converters. It simplifies complex calculations for Ohm's law, LC circuits, impedance, and more, with a user-friendly interface for quick input and reordering of frequently used tools.

**Highlights:** Ohm's law calculator, Op-Amp gain calculator, LC circuit resonance calculator, RLC circuit impedance calculator, dBm to voltage/power converter, Resistor calculator, Unit converters (metric/imperial)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is iSlipstick free?

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

### Is WE Catalog free?

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

### Which has better reviews, iSlipstick or WE Catalog?

iSlipstick and WE Catalog are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do iSlipstick or WE Catalog have ads?

Neither iSlipstick nor WE Catalog shows ads.

### Which is updated more often, iSlipstick or WE Catalog?

iSlipstick ships an update every 3 months, and WE Catalog every 9 months. Most recently, iSlipstick was updated on August 12, 2026 and WE Catalog on June 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.*