# VHDL Ref vs PCB Toolkit

The clearest difference is price: PCB Toolkit at Free against VHDL Ref's $2.99. PCB Toolkit also leads on update cadence (every 3 months vs every 7 months) and iOS requirement (16.6 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

PCB Toolkit is free to download; VHDL Ref costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

VHDL Ref ships an update every 7 months, PCB Toolkit every 3 months. The most recent releases landed on October 17, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | VHDL Ref | PCB Toolkit |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.2 (5 ratings)](https://appshunter.io/ios/app/vhdl-ref/id418473744/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 1 MB | 127 MB |
| Requires iOS | 18.6 | **16.6** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [squishLogic](https://appshunter.io/developer/353387502) | [Antonius Hurx](https://appshunter.io/developer/1625451628) |

## What reviewers say

### VHDL Ref

[App page](https://appshunter.io/ios/app/vhdl-ref/id418473744)

This app serves as a quick reference for VHDL and Verilog, two popular Hardware Description Languages. It offers a searchable dictionary of keywords, operators, and data types, along with examples and common functions for each language. Designed for engineers and students, it facilitates cross-language comparison and filtering by language elements.

**Highlights:** Searchable dictionary of keywords, operators, and data types, Examples for every reference construct, Common functions for VHDL and Verilog, Pre-defined attributes for VHDL, Primitive gates and drive strengths for Verilog, Filter by language (VHDL, Verilog, or both), Filter by language elements

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

**In-app purchases:** none


### PCB Toolkit

[App page](https://appshunter.io/ios/app/pcb-toolkit/id6445844364)

**In-app purchases:** none


## Frequently asked questions

### Is VHDL Ref free?

VHDL Ref costs $2.99, with no in-app purchases.

### Is PCB Toolkit free?

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

### Do VHDL Ref or PCB Toolkit have ads?

Neither VHDL Ref nor PCB Toolkit shows ads.

### Which is updated more often, VHDL Ref or PCB Toolkit?

VHDL Ref ships an update every 7 months, and PCB Toolkit every 3 months. Most recently, VHDL Ref was updated on October 17, 2026 and PCB Toolkit on October 26, 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.*