iSlipstick vs WE Catalog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iSlipstick
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.
- 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)
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iSlipstick is a collection of commonly used electronic formula calculators and value converters. Included: Ohm's law calculator Op-Amp gain calculator LC circuit resonate frequency calculator Impedance and phase calculator for both series and parallel RLC circuits Parallel resistance calculator for up to six resistors dBm to voltage and power calculator for 50, 75 and 600 ohm loads Convert dBV to volts, dBW to watts and dBuV to microvolts with the dB converter. This converter will also convert the respective value to dB Resistor Calculator for 4 or 5 band resistors and SMD types Time Constant calculator for R - C and R - L networks. Length, Area, Volume, Capacity and Weight converters to go to and from metric and imperial units and within the same standard. Voltage Converter RMS to Peak and Peak-to-Peak and vice-versa. Features: iSlipstick's unique keyboard makes it easy to enter values without having to jump from one keyboard mode to another Numeric input can be American or European standard Re-orderable tables allow you to put the most frequently used functions where you will find them quickly iSlipstick has been tested on iOS 12.0 thru iOS 15.1
WE Catalog
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.
- Component selection tool
- QR-code scanner
- Ferrite selection
- Inductor selection
- Capacitor selection
- Resistor selection
- LED selection
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Thanks for using the WE Catalogue app by Würth Elektronik eiSos. With this app you have another tool in addition to the website, www.we-online.com and our online platform REDEXPERT www.we-online.com/redexpert. Here you can select the right component for your project. By using the QR-Code scanner, it is the perfect companion four our paper catalogue. With this app, you will be able to selecta suitable ferrite, inductor, overvoltage protection, capacitor, resistor, quartz, oscillator, wireless power coils, power modules, LEDs, Ethernet and LAN transformers. About Würth Elektronik eiSos GmbH & Co. KG Würth Elektronik eiSos GmbH & Co. KG is a manufacturer of electronic and electromechanical components for the electronics industry. Production sites in Europe, Asia and North America supply a growing number of customers worldwide. The product program encompasses EMC components, inductors, transformers, HF components, varistors, resisitors, capacitors, quartz, oscillators, power modules, LEDs, wireless power, connectors, power supply elements, switches, connection technology, fuse holders, wireless connectivity and sensors. Würth Elektronik eiSos GmbH & Co. KG together with its specialized affiliated companies form the Würth Elektronik eiSos Group. About the Würth Elektronik eiSos Group Würth Elektronik eiSos GmbH & Co. KG (Focus: standard components), Würth Elektronik iBE GmbH (Focus: customized passive components for the automotive industry), Wurth Electronics Midcom Inc. (Focus: transformers and custom magnetics), Würth Elektronik Stelvio Kontek S.p.A. (Focus: customized plug connectors) and IQD Frequency Products Ltd (Focus: frequency-producing devices) form the Würth Elektronik eiSos Group. The former subsidiary AMBER wireless GmbH with a focus on solutions for wireless data transmission became the Wireless Connectivity and Sensors division of Würth Elektronik eiSos GmbH & Co. KG in 2018. The group of companies with 6,700 employees generated sales of approx. € 653 million in 2017. The Würth Elektronik eiSos Group is one of the biggest European manufacturers of passive components and operates in 50 countries. Through its technology partnership with the Audi Sport ABT Schaeffler Formula E Team and its support for the Formula E racing series, the Group demonstrates its innovative strength in eMobility (www.we-speed-up-the-future.com). Other global growth markets, such as Energy Harvesting, Internet of Things and Wireless Communication, are addressed with innovative products. The Würth Elektronik eiSos Group is part of the Würth Group, the world market leader for assembly and fastening technology.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | iSlipstick | WE Catalog |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 90.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 3 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 36 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Sam Virgillo | Wuerth Elektronik eiSos GmbH & Co. KG |
Customer experience
iSlipstick
WE Catalog
In-app purchases
iSlipstick
No in-app purchases
WE Catalog
No in-app purchases









