---
title: "VHDL Ref - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "A quick reference manual for the two most popular Hardware Description Languages (HDL):  VHDL and Verilog (including SystemVerilog).   This app is written by engineers, for engineers. For every constr"
---

# VHDL Ref — United States
> Reference for VHDL and Verilog

![VHDL Ref App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/7c/96/22/7c962293-90b2-46ab-0ada-911ea5c979f8/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png)

**Developer:** [squishLogic](https://apptail.io/developer/squishlogic-DaT)
**Category:** Reference
**Rating:** 3.2/5 (5 ratings)
**Price:** Free
**Bundle ID:** com.squishLogic.VHDLRef
**Store:** Apple App Store
**Country:** United States
**Version:** 3.2 (released 2026-08-31)
**Original Release:** 2014-09-06
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id418473744)
**AppTail Page:** [https://apptail.io/app/vhdl-ref-ZoZe/united-states](https://apptail.io/app/vhdl-ref-ZoZe/united-states)

## VHDL Ref Description
A quick reference manual for the two most popular Hardware Description Languages (HDL):  VHDL and Verilog (including SystemVerilog).   This app is written by engineers, for engineers. For every construct in VHDL, provides the equivalent in Verilog, and vice-versa.   Experienced custom digital logic designer for FPGA or ASIC?  Electrical engineering student just learning the ropes?  This app is for you.  
 
+ Searchable dictionary of every keyword, operator, and data type for both languages.
 
+ Handbook provides simple example for every single reference
 
+ Common functions in each language
 
+ All pre-defined attributes for VHDL
 
+ All primitive gates and drive strengths for Verilog
 
+ Filter by language (VHDL, Verilog, or both)
 
+ Filter by language elements (keywords, operators, attributes, data types, etc.)

## VHDL Ref Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/1f/8d/13/1f8d1354-12a1-b4ba-30c3-8e48a678f92a/mzl.zgeegidt.png/640x920.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/09/82/88/098288b8-f4f3-76db-e44d-f8392d811d1a/mzl.ayhbgywa.png/640x960.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/e5/00/cc/e500ccfb-c08e-99a4-5872-687f1af77caa/mzl.xukvzafh.png/640x960.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/c1/df/7d/c1df7d6f-74dc-9ea3-06e6-b9af8e13a3d3/mzl.ldtkqfoi.png/640x920.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/7f/a7/29/7fa72959-9e33-bfb7-ef44-7d2f5e3b1644/mzl.hpspswdn.png/640x960.png)

## VHDL Ref Rating Breakdown in United States
- 5 stars: 2 (40%)
- 4 stars: 1 (20%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 2 (40%)

## VHDL Ref Reviews in United States

### *---- "There’s no there there."
Minimal info in each definition. Examples not elaborated. Practically useless app. Very little real work put into this. Barely worth 3 cents, certainly not worth $3.
-- Stuckeymax, 2020-08-04

### ****- "Good reference"
It's a good reference guide, but as one if the previous reviewers said, when you scroll all the way down, the last 2 options are behind the filter bar. It prevents me from choosing them. Please fix this. I would have given the app 5 stars
-- AssyrianLion, 2017-09-19

### *---- "Value"
Pretty useless.
-- Mototech5, 2015-03-18

### ***** "Want More...."
I find this to be a very useful app. Works well for a reference for VHDL (Verilog too, but I've used that less).
I would like to see detailed examples, especially some examples converting between VHDL and Verilog. Also, maybe some test benches.
-- Mindwalker85, 2015-01-11

### ***-- "Learning Verilog"
This looked like the best of the three I looked at. Good little reference for the keywords and operators. There is a problem with the list though. When scrolling all the way to the bottom there are four table items that are hidden behind the lower bar with the filter button on it. I can scroll them up and see them but cannot select them since the table snaps back down. iPhone 4S. Seems like it was made for the iPhone 5 screen. Please fix to auto screen size.
-- omnisean3000, 2013-06-16

### ***** "Engineer"
Snappy and concise.  Easy to zero in on the needed term.  I like the consolidation of the many related VHDL terms.  Excellent reference!
-- DavidRengineer, 2013-03-10

[View all VHDL Ref reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## VHDL Ref Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Israel | Reference | #160 |
| Top Paid | Ukraine | Reference | #229 |
| Top Paid | Vietnam | Reference | #230 |


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## VHDL Ref Available In
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---

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