Comparison

Learn Objective C Programming vs R47 RPN Calculator

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

Head to head
About

Learn Objective C Programming

Features
Read full description

Learn Objective C Programming is a complete learning app designed for beginners, students, developers, and anyone interested in Apple application development. Objective C is a powerful programming language that has played an important role in the development of applications for iPhone, iPad, and Mac. This app helps you understand Objective C concepts through structured lessons, practical code examples, quizzes, and useful programming resources. Whether you are starting from the basics or preparing for a technical interview, you can learn at your own pace and improve your programming knowledge step by step. Learn Objective-C Programming is your ultimate guide to mastering Objective-C, one of the most important programming languages for app development. Whether you're a beginner or an experienced developer, this app offers detailed tutorials, hands-on exercises, and interactive quizzes to help you build strong programming skills and create efficient apps. Key Features: Comprehensive Tutorials: Learn the fundamentals of Objective-C, including syntax, object-oriented programming (OOP), memory management, and more. Bookmark: Save key lessons for quick reference and easy review. Syntax Highlighting: Follow along with clear, syntax-highlighted code examples to enhance your learning experience. Text-to-Speech: Listen to tutorials and explanations on the go with the app's text-to-speech feature. Tips and Tricks: Learn programming best practices and shortcuts for faster, cleaner code. Interview Questions: Prepare for job interviews with a curated list of common Objective-C questions. FAQs: Get quick answers to frequently asked questions and resolve any challenges you encounter. Whether you're learning to develop iOS apps or improving your coding skills, "Learn Objective-C Programming" provides all the tools and knowledge you need to succeed. Download now and start mastering Objective-C today! Build a strong understanding of Objective C and improve your programming skills with structured lessons, practical examples, and interactive learning resources. Download Learn Objective C Programming and begin your coding journey today.

About

R47 RPN Calculator

This scientific calculator uses Reverse Polish Notation (RPN) to help you break down complex problems. It offers a full 47-series instruction set with advanced functions and a program editor. The free version includes extensive tutorials and documentation.

Highlights
  • RPN scientific calculator
  • 47-series instruction set
  • Program editor
  • Tutorial library
  • Offline functionality
  • Light and dark themes
Features
Read full description

An RPN calculator isn't just a tool for getting answers like a traditional exam calculator—it's a way of thinking. It mirrors how you naturally break problems into steps, making it more like an extension of your mind than a shortcut. A full HP-style RPN scientific calculator — on iPhone and iPad, offline, with no ads or tracking. 47 Calculator is a programmable Reverse Polish Notation scientific calculator. Trigonometry, logarithms, statistics, probability, finance, complex numbers, base conversions, matrix operations, numerical solvers — the full 47-series instruction set, in your pocket. Free includes the calculator, a program editor for reading and writing 47-series programs, reference documentation, and a full tutorial library — probability and statistics, finance, numerical methods, programming patterns, advanced RPN techniques. The Pro version adds the Explorer — browse every menu, flag, mode, and operation the engine supports, searchable and cross-linked. Works fully offline after first launch. Light and dark themes. No ads, no third-party analytics, no tracking, no account required.

Screenshots

Learn Objective C Programming4 screens
R47 RPN Calculator4 screens

Verdict

The call

The clearest difference is price: R47 RPN Calculator at Free against Learn Objective C Programming's $1.99. R47 RPN Calculator also leads on update cadence (every 3 days vs every 20 months). Learn Objective C Programming's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.6). On 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

R47 RPN Calculator is free to download; Learn Objective C Programming costs $1.99 up front. R47 RPN Calculator sells 1 one-off in-app purchase. Learn Objective C Programming asks for nothing beyond the download.

UpkeepUpdate frequency

Learn Objective C Programming ships an update every 20 months, R47 RPN Calculator every 3 days. The most recent releases landed on September 13, 2026 and September 20, 2026 respectively.

Scorecard4 real differences · 6 level
Learn Objective C Programming versus R47 RPN Calculator: the parameters behind the verdict, then further details
ParameterLearn Objective C ProgrammingR47 RPN Calculator
Price$1.99Free — better
Rating—5.0 (23 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—23 — better
Update frequencyEvery 20 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size35 MB61 MB
Age rating17+4+
DeveloperMuhammad MubeenMARCEL DAN

In-app purchases

None

Learn Objective C Programming

No in-app purchases

1 purchases

R47 RPN Calculator

One-time1
  • Pro Pack$4.99

Questions

Is Learn Objective C Programming free?
Learn Objective C Programming costs $1.99, with no in-app purchases.
Is R47 RPN Calculator free?
R47 RPN Calculator is free to download, with in-app purchases available.
Do Learn Objective C Programming or R47 RPN Calculator have ads?
Neither Learn Objective C Programming nor R47 RPN Calculator shows ads.
Which is updated more often, Learn Objective C Programming or R47 RPN Calculator?
Learn Objective C Programming ships an update every 20 months, and R47 RPN Calculator every 3 days. Most recently, Learn Objective C Programming was updated on September 13, 2026 and R47 RPN Calculator on September 20, 2026.

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