Comparison

CloudLabs Converging Lens vs Learn Erlang Programming

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

Head to head
About

CloudLabs Converging Lens

Features
Read full description

This simulator recreates an optical table with a converging lens and two test objects. The goals of this lab are to experimentally find the focal length, radius of curvature, and power of the lens, as well as find the magnification of the image and determine whether or not it is inverted. During the laboratory development you will be able to observe the changes in the size of the formed image, as the distance between the object and the lens is varied.

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.

Screenshots

CloudLabs Converging Lens1 screens
Learn Erlang Programming4 screens

Verdict

The call

The clearest difference is price: CloudLabs Converging Lens at Free against Learn Erlang Programming's $1.99. CloudLabs Converging Lens also leads on iOS requirement (9.0 vs 13.0). On update cadence, ads, in-app purchases 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

CloudLabs Converging Lens is free to download; Learn Erlang Programming costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CloudLabs Converging Lens ships an update every 21 months, Learn Erlang Programming every 24 months. The most recent releases landed on December 14, 2025 and September 23, 2026 respectively.

Scorecard2 real differences · 7 level
CloudLabs Converging Lens versus Learn Erlang Programming: the parameters behind the verdict, then further details
ParameterCloudLabs Converging LensLearn Erlang Programming
PriceFree — better$1.99
Rating—4.5 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 21 months — betterEvery 24 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better13.0
Further details — not scored
Size81 MB36 MB
Age rating17+4+
DeveloperJiovany OrozcoMuhammad Mubeen

In-app purchases

None

CloudLabs Converging Lens

No in-app purchases

None

Learn Erlang Programming

No in-app purchases

Questions

Is CloudLabs Converging Lens free?
CloudLabs Converging Lens is free to download, with no in-app purchases.
Is Learn Erlang Programming free?
Learn Erlang Programming costs $1.99, with no in-app purchases.
Do CloudLabs Converging Lens or Learn Erlang Programming have ads?
Neither CloudLabs Converging Lens nor Learn Erlang Programming shows ads.
Which is updated more often, CloudLabs Converging Lens or Learn Erlang Programming?
CloudLabs Converging Lens ships an update every 21 months, and Learn Erlang Programming every 24 months. Most recently, CloudLabs Converging Lens was updated on December 14, 2025 and Learn Erlang Programming on September 23, 2026.

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