# PCB Toolkit

> PCB Toolkit (iPhone/iPad app by Antonius Hurx.)

- Source: https://appshunter.io/ios/app/pcb-toolkit/id6445844364 (this page in markdown: same URL + `.md`)
- Developer: [Antonius Hurx](https://appshunter.io/developer/1625451628)
- Category: Reference, Developer Tools
- Price: Free (on sale, was $2.99)
- Age rating: 4+
- Requires: iOS 16.6 · 127 MB
- Languages: English
- Released: 2023-03-07
- Data updated: 2026-06-07
- User reviews in markdown: https://appshunter.io/ios/app/pcb-toolkit/id6445844364/reviews.md

## What is PCB Toolkit?

You can use this PCB Toolkit for iOS to calculate:

- Maximum conductor length / bandwidth (Hammerstad/Jensen & IPC)
- Conductor Impedance (also differential precise calculation by Kirschning/Jansen & IPC calculation)
- Via properties
- Via θ (Thermal resistance), and for a via array (IPC)
- Low Pass Π-filter
- Fusing current (Preece, Brooks & Onderdonk)
- Maximum current or width for a trace (IPC-2521 and IPC-2221)
- Electrical clearance (IPC2221B)
- Pull Up calculator I2C

And now also:

- LED Resistor Calculator
- Mounting Hole Info
- Nearest E-Series Resistor Calculator (Solo/Serie/Parallel)
- Resistor Tolerance / Alpha Viewer
- Via Stitching Calculator
- Cload Calculator (XTAL)

And also links to standard house stackups of JLCPCB, PCBWAY and Aisler are included. 

I will add more calculations with updates. (One time buy, so you will get these updates without additional charge later) I am also open to feature requests.

The app supports light mode, dark mode, portrait & landscape mode and zoomed-in display.


## Version history (last 5 releases)

### 1.16 — 2024-10-31

- LED Resistor Calculator
- Mounting Hole Info
- Nearest E-Series Resistor Calculator (Solo/Serie/Parallel)
- Resistor Tolerance / Alpha Viewer
- Via Stitching Calculator
- Cload Calculator (XTAL)
- CRC 8-bits Calculator (For ex as used for Sensirion sensors)
- MacOS support
- Bugfixes and layout updates

### 1.15 — 2024-10-21

- LED Resistor Calculator
- Mounting Hole Info
- Nearest E-Series Resistor Calculator (Solo/Serie/Parallel)
- Resistor Tolerance / Alpha Viewer
- Via Stitching Calculator
- Cload Calculator (XTAL)
- Bugfixes

### 1.14 — 2024-04-08

Added I2C Pull-Up Resistor calculation

### 1.13 — 2024-01-21

Bug fixes and some small improvements

### 1.12 — 2023-08-13

- Added Impedance Matching for PCB antenna's (Pi/T network)
- Small bugfixes

## Apps similar to PCB Toolkit

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sinograms](https://appshunter.io/ios/app/sinograms/id1569372305) | 4.7 (3) | $3.99 | Reference |
| [VHDL Ref](https://appshunter.io/ios/app/vhdl-ref/id418473744) | 3.2 (5) | $2.99 | Reference |

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-07.*