iSlipstick vs CoilCalc
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
CoilCalc
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CoilCalc is a precise and intuitive tool for calculating technical coil and wire parameters. The app helps users determine accurate values for resistance, current, power output and coil length based on material type, wire gauge, diameter settings and wrap count. Designed for engineering tasks, educational environments and technical projects, CoilCalc provides clear results through a modern and easy to use interface. All calculations are processed instantly, making it an efficient tool for anyone working with coil geometry, wire characteristics or electrical values. Key Features • Accurate calculations for resistance, current, power and coil length • Supports multiple coil configurations such as single, dual and quad • Adjustable parameters for material, wire gauge, inner and outer diameter and wrap count • Instant results for technical and educational use • Clean and modern interface designed for clarity and speed • Built in formulas and explanations to help users understand the calculations • Fully localized in English and German • Works offline and requires no account CoilCalc offers a reliable and accessible way to perform coil and wire calculations, making it useful for training, engineering work and personal technical projects.
Screenshots
Verdict
The clearest difference is iOS requirement: iSlipstick at 12.0 against CoilCalc's 26.1. On price, ads, in-app purchases and device support 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.
| Parameter | iSlipstick | CoilCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 90.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 36 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Sam Virgillo | VortexCom UG (haftungsbeschränkt) |
In-app purchases
iSlipstick
No in-app purchases
CoilCalc
No in-app purchases
Questions
Is iSlipstick free?
Is CoilCalc free?
Do iSlipstick or CoilCalc have ads?
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