# VHDL Ref vs VHDL Manual

The clearest difference is price: VHDL Manual at Free against VHDL Ref's $2.99. VHDL Manual also leads on rating (5.0 vs 3.2). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

VHDL Manual 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 Manual holds the better App Store score, 5.0 against 3.2. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

## The numbers

| Metric | VHDL Ref | VHDL Manual |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.2 (5 ratings)](https://appshunter.io/ios/app/vhdl-ref/id418473744/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/vhdl-manual/id6759581908/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Paid | Paid |
| Size | 1 MB | 6 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [squishLogic](https://appshunter.io/developer/353387502) | [MIGUEL DOVALE](https://appshunter.io/developer/1879634957) |

## 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


### VHDL Manual

[App page](https://appshunter.io/ios/app/vhdl-manual/id6759581908)

An offline reference app for engineers and students using VHDL. It offers a structured manual with clear explanations, code examples, and smart search. Features include bookmarking, history tracking, and a daily concept widget.

**Highlights:** Offline VHDL reference, 276 concepts with explanations, Practical code examples, Structured manual by topic, Smart search with ranked results, Syntax highlighting and code snippets, Daily VHDL concept widget

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VHDL Ref free?

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

### Is VHDL Manual free?

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

### Which has better reviews, VHDL Ref or VHDL Manual?

VHDL Manual is rated higher. VHDL Ref averages 3.2 out of 5 from 5 ratings, while VHDL Manual averages 5.0 from 2 ratings.

### Do VHDL Ref or VHDL Manual have ads?

Neither VHDL Ref nor VHDL Manual shows ads.

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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.*