Comparison

Learn Erlang Programming vs DEC Opcodes

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

Head to head
About

Learn Erlang Programming

Master the Erlang programming language to build highly available, scalable soft real-time systems. This app provides a solid understanding of Erlang's core concepts, including concurrency, distribution, and fault tolerance, essential for industries like telecoms and e-commerce.

Highlights
  • Understand Erlang programming language
  • Build scalable soft real-time systems
  • Learn about high availability
  • Explore concurrency and distribution
  • Grasp fault tolerance concepts
  • Study functional programming principles
Features
Read full description

Learn Erlang Programming is a complete learning companion for students, developers, and anyone interested in building reliable, scalable, and fault tolerant applications. Whether you are starting Erlang for the first time or improving your existing programming skills, this app provides organized lessons, clear explanations, practical examples, quizzes, and essential programming concepts. Learn at your own pace and develop a strong understanding of Erlang without complicated explanations. Learn Erlang from the Basics Start with the fundamentals and gradually progress toward advanced Erlang development. Each topic is presented in a clear and structured format to help you understand how Erlang works. Topics include Introduction to Erlang Installing and setting up Erlang Erlang shell and basic syntax Variables and data types Atoms and tuples Lists and maps Pattern matching Operators and expressions Functions and modules Recursion Guards and conditions List comprehensions Higher order functions Error handling Processes and message passing Concurrency in Erlang Process monitoring and linking Fault tolerance Distributed programming OTP principles GenServer basics Supervisors and supervision trees File handling Database connectivity Erlang coding practices Practical Erlang Examples Improve your coding skills with practical examples that demonstrate important Erlang concepts. Study reusable examples and understand how each piece of code works. Programming examples help you learn Function creation List operations Recursive solutions Pattern matching Process communication Concurrent task execution Error management Module development Data processing Erlang is designed for developing concurrent, distributed, and fault tolerant systems. Learning Erlang can help you understand functional programming, process based concurrency, message passing, supervision strategies, and reliable backend architecture. Download Learn Erlang Programming and begin building your Erlang development skills today.

About

DEC Opcodes

Explore the instruction sets of legendary DEC computers like the PDP and VAX. This app provides detailed information on each instruction, historical context, and interactive lessons. Discover the machines that shaped modern computing.

Highlights
  • Instruction set reference
  • Historical context and photos
  • System specifications
  • Interactive assembly lessons
  • Search and filtering
  • Customizable themes
  • Simple assembler
Features
Read full description

Dec Opcodes – DEC Architecture Reference Before the microprocessor, there was DEC. The minicomputers built by Digital Equipment Corporation didn't just advance computing - they defined it. Unix was born on a PDP-7. Spacewar! ran on a PDP-1. The field of Artificial Intelligence was born on the PDP-10. The VAX powered universities and research labs worldwide for a generation. DecOpcodes puts the complete instruction sets of these legendary machines in your pocket. Five iconic architectures covered: PDP-1 (1960) · PDP-8 (1965) · PDP-10 (1966) · PDP-11 (1970) · VAX (1977) For every instruction:  • Full description of what the instruction does  • Octal and hex encoding  • Flags affected  • Addressing modes, word count, and cycle counts  • Assembly code examples and implementation notes But there is a lot more than just dry opcodes:  • Complete system specifications and register architecture  • Historical context and cultural impact  • Archival photographs - front panels, system cabinets, and more  • Notable installations and the systems they powered  • Architecture variants and successors • Interactive lessons on assembly language and console operations (ideal if you have an PiDP emulator) Built for exploration:  • Search across all systems instantly • A simple assembler for PDP-1, -8 and -11 code • Filter by instruction category  • Sort alphabetically or by category • Favorite instructions for quick reference Beautifully designed:  • System-specific accent colours  • Five themes including Terminal green and Blinkenlights orange  • Full Dark Mode support From the 18-bit simplicity of the PDP-1 to the 32-bit sophistication of the VAX, DecOpcodes is a fascinating and interactive journey through the machines that made modern computing possible. All features are free and unlocked. If you like the app you can always leave a nice review or tip the developer!

Screenshots

Learn Erlang Programming4 screens
DEC Opcodes4 screens

Verdict

The call

The clearest difference is price: DEC Opcodes at Free against Learn Erlang Programming's $1.99. DEC Opcodes also leads on rating (5.0 vs 4.5) and update cadence (every 8 days vs every 24 months). Learn Erlang Programming's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 18.0). On ratings volume, ads and device support 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

DEC Opcodes is free to download; Learn Erlang Programming costs $1.99 up front. DEC Opcodes sells 1 one-off in-app purchase. Learn Erlang Programming asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

DEC Opcodes holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

UpkeepUpdate frequency

Learn Erlang Programming ships an update every 24 months, DEC Opcodes every 8 days. The most recent releases landed on September 28, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 3 level
Learn Erlang Programming versus DEC Opcodes: the parameters behind the verdict, then further details
ParameterLearn Erlang ProgrammingDEC Opcodes
Price$1.99Free — better
Rating4.5 (2 ratings)5.0 (3 ratings) — better
Number of ratings23 — better
Update frequencyEvery 24 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size36 MB42 MB
Age rating4+4+
DeveloperMuhammad MubeenJohn Kennedy

Customer experience

Learn Erlang Programming

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

DEC Opcodes

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Learn Erlang Programming

No in-app purchases

1 purchases

DEC Opcodes

One-time1
  • Buy Me a Coffee$0.99

Questions

Is Learn Erlang Programming free?
Learn Erlang Programming costs $1.99, with no in-app purchases.
Is DEC Opcodes free?
DEC Opcodes is free to download, with in-app purchases available.
Which has better reviews, Learn Erlang Programming or DEC Opcodes?
DEC Opcodes is rated higher. Learn Erlang Programming averages 4.5 out of 5 from 2 ratings, while DEC Opcodes averages 5.0 from 3 ratings.
Do Learn Erlang Programming or DEC Opcodes have ads?
Neither Learn Erlang Programming nor DEC Opcodes shows ads.
Which is updated more often, Learn Erlang Programming or DEC Opcodes?
Learn Erlang Programming ships an update every 24 months, and DEC Opcodes every 8 days. Most recently, Learn Erlang Programming was updated on September 28, 2026 and DEC Opcodes on October 7, 2026.

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