Comparison

VHDL Compiler vs Logic

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

VHDL Compiler

Write and test VHDL code on your mobile device. This application is designed for learning and executing VHDL snippets using the GHDL simulator. It offers a code editor with syntax highlighting and a custom keyboard for efficient input.

Highlights
  • Compile and run VHDL programs
  • View program output and errors
  • Custom keyboard for VHDL characters
  • Advanced source code editor
  • Syntax highlighting and line numbers
  • Import, open, save, and share files
Features
Read full description

Write VHDL code directly on your iPhone, iPad and iPod Touch! This app is ideal for learning and testing code snippets! VHDL (VHSIC Hardware Description Language) is a hardware description language used in electronic design automation to describe digital and mixed-signal systems such as field-programmable gate arrays and integrated circuits. VHDL can also be used as a general purpose parallel programming language. This app uses the open-source GHDL simulator (http://ghdl.free.fr). GHDL is a VHDL compiler that can execute (nearly) any VHDL program. GHDL is not a synthesis tool: you cannot create a netlist with GHDL (yet). Features: - Compile and run your program - View program output or detailed error - Custom keyboard for easy input of frequently used characters - Optimized for connecting with external physical/bluetooth keyboard - Advanced source code editor with syntax highlighting and line numbers - Open, save, import and share VHDL files. Limitations: - Internet connection is required for compilation - Maximum program running time is 20s - One file can be run at a time - All entities should be have the same name as their files.

About

Logic

Design, simulate, and simplify logic gate networks. Generate truth tables, minimized boolean expressions, and waveforms. This app is ideal for students and engineers to explore digital logic.

Highlights
  • Design logic gate networks
  • Simulate network behavior
  • Generate truth tables
  • Minimize boolean expressions
  • Create input-output waveforms
  • Study boolean algebra theorems
Features
Read full description

The LogicGateDesign is a feature rich app designed by an engineer. This app allows the creative smart people like you to design, draw, analyse and simplify logic gate networks. You can draw logic gate networks and share it with others. You can generate truth table and find simplified/minimized boolean expression that represents the network. You can optimize and reverse engineer a boolean expression to draw a ladder logic diagram. It performs both forward engineering (boolean expression to logic circuit) and reverse engineering (logic circuit to boolean expression). There can be multiple groups of network and each group can have multiple outputs. Truth table is generated for all the outputs. You can simplify a boolean expression, and find the truth table and share it. Show truth table along with different types of boolean expression (simplified, Sum-of-products, Product-of-sums) The simplified expressions also gives you the number of gates required. You also get the alternate expressions for the same output with the gates required for that. You can generate a truth table, simplified boolean expression using input-output waveforms. You can generate a output waveforms, simplified boolean expression using truth table and input waveforms. You can generate a grey codes and grey code encoder wheel and share it. Do you have a truth table for your network and want to find the simplified/minimized boolean expression? This app has you covered. You can simulate your network by changing one input at a time or toggeling all inputs at once. This app generates beautiful diagrams (logic gate diagram or waveform diagram) that you can share with others or save it locally. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. There is also a page to help you study. This study tab teaches you some very important boolean algebra theorems. This is a perfect app for a creative smart individual like you. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!

Screenshots

VHDL Compiler4 screens
Logic4 screens

Verdict

The call

The clearest difference is review sentiment: VHDL Compiler at 100% against Logic's 21%. VHDL Compiler also leads on iOS requirement (12.0 vs 15.1). Logic's advantage is rating (3.6 vs 2.7) and in-app purchases (none vs 1). On price, ratings volume, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VHDL Compiler sells 1 one-off in-app purchase. Logic asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Logic holds the better App Store score, 3.6 against 2.7. Both are backed by a comparable volume of ratings — 7 and 7 respectively. Written reviews complicate that: 100% of VHDL Compiler's written reviews are positive against 21% of Logic's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

VHDL Compiler ships an update every 2 months, Logic every 5 weeks. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

Scorecard5 real differences · 5 level
VHDL Compiler versus Logic: the parameters behind the verdict, then further details
ParameterVHDL CompilerLogic
PriceFreeFree
Rating2.7 (7 ratings)3.6 (7 ratings) — better
Positive reviews100.0% of reviews — better21.4% of reviews
Number of ratings77
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size20 MB35 MB
Age rating4+4+
DeveloperKetan AppaOm Prakash Chapagain

Customer experience

VHDL Compiler

All ratings7 ratings
Positive42.9%
Neutral0.0%
Negative57.1%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Logic

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews14 reviews
Positive21.4%
Neutral21.4%
Negative57.1%

In-app purchases

1 purchases

VHDL Compiler

One-time1
  • Upgrade$2.99
None

Logic

No in-app purchases

Questions

Is VHDL Compiler free?
VHDL Compiler is free to download, with in-app purchases available.
Is Logic free?
Logic is free to download, with no in-app purchases.
Which has better reviews, VHDL Compiler or Logic?
Logic is rated higher. VHDL Compiler averages 2.7 out of 5 from 7 ratings, while Logic averages 3.6 from 7 ratings.
Do VHDL Compiler or Logic have ads?
Both VHDL Compiler and Logic show ads.
Which is updated more often, VHDL Compiler or Logic?
VHDL Compiler ships an update every 2 months, and Logic every 5 weeks. Most recently, VHDL Compiler was updated on October 11, 2026 and Logic on October 12, 2026.

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