# iSlipstick vs Circuit Laboratory

The clearest difference is review sentiment: iSlipstick at 90% against Circuit Laboratory's 0%. iSlipstick also leads on price (Free vs $5.99) and rating (5.0 vs 3.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

iSlipstick is free to download; Circuit Laboratory costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iSlipstick holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 90% of iSlipstick's written reviews are positive against 0% of Circuit Laboratory's.

iSlipstick ships an update every 3 months, Circuit Laboratory every 12 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | iSlipstick | Circuit Laboratory |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/islipstick/id324560822/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/circuit-laboratory/id1042205580/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | **90.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 12 months |
| Monetization | **Free** | Paid |
| Size | 36 MB | 128 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sam Virgillo](https://appshunter.io/developer/324560825) | [Fabrizio Boco](https://appshunter.io/developer/466239616) |

## 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


### Circuit Laboratory

[App page](https://appshunter.io/ios/app/circuit-laboratory/id1042205580)

Analyze electronic circuits with DC, AC, multifrequency AC, and transient analysis. Draw circuits graphically, modify component parameters, and view voltage and current graphs. Supports various components and offers video tutorials for each.

**Highlights:** DC, AC, Multifrequency AC, and Transient Analysis, Graphical circuit drawing, Component parameter editing, Voltage and current graphing, Support for diverse electronic components, Circuit saving and sharing, Video tutorials for components

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

**In-app purchases:** none


## Frequently asked questions

### Is iSlipstick free?

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

### Is Circuit Laboratory free?

Circuit Laboratory costs $5.99, with no in-app purchases.

### Which has better reviews, iSlipstick or Circuit Laboratory?

iSlipstick is rated higher. iSlipstick averages 5.0 out of 5 from 3 ratings, while Circuit Laboratory averages 3.0 from 2 ratings.

### Do iSlipstick or Circuit Laboratory have ads?

Neither iSlipstick nor Circuit Laboratory shows ads.

### Which is updated more often, iSlipstick or Circuit Laboratory?

iSlipstick ships an update every 3 months, and Circuit Laboratory every 12 months. Most recently, iSlipstick was updated on October 21, 2026 and Circuit Laboratory on October 24, 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.*