Comparison

Learn Cobol Programming Pro vs Rock Identifier

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

Head to head
About

Learn Cobol Programming Pro

Features
Currently charting
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# Learn Cobol Professional Learn COBOL programming step by step with organized lessons, knowledge quizzes, coding practice, and learning progress tracking. Learn Cobol Professional provides a structured learning experience for exploring COBOL fundamentals, understanding program structure, and studying important concepts used in business and enterprise programming. Whether you are discovering COBOL for the first time or reviewing core programming topics, the app helps you follow a clear learning path at your own pace. ## EXPLORE 10 COBOL CHAPTERS Build your knowledge through 10 organized chapters covering COBOL programming concepts. The learning content includes: β€’ Introduction to COBOL β€’ COBOL Program Structure β€’ Data Types and Variables β€’ Basic Operations and Control Flow β€’ File Handling in COBOL β€’ Data Structures Each chapter organizes related lessons and quiz questions to make learning easier to follow. ## LEARN WITH 80 STRUCTURED LESSONS Explore 80 lessons designed to introduce COBOL concepts in an organized sequence. Study topics including: β€’ Why COBOL Is Still Used Today β€’ COBOL in Business and Enterprise Systems β€’ Structure of a COBOL Program ## REVIEW YOUR KNOWLEDGE WITH 82 QUIZZES Use 82 quiz questions to review programming concepts and reinforce your understanding. Quizzes are organized alongside learning content, helping you check your knowledge as you move through COBOL lessons. Use the built-in Code Editor to write, run, and experiment with code in supported programming languages. The editor includes: β€’ A coding workspace β€’ File management β€’ Code execution and output β€’ Multiple programming language options β€’ Quick coding examples Explore examples such as Hello World, Fibonacci Series, Factorial Number, Calculator App, and List Operations. ## SEARCH LESSONS AND TOPICS Find relevant learning content using the built-in search feature. β€’ Search lessons and topics β€’ Browse learning categories β€’ Explore popular topics β€’ View available examples β€’ Return to recent searches Find content about COBOL program structure, file handling, data types, variables, and other visible learning topics. ## TRACK YOUR LEARNING PROGRESS Follow your progress throughout your COBOL learning journey. View: β€’ Completed lessons β€’ Overall completion percentage β€’ Chapter progress β€’ Daily learning streak β€’ Completion rate β€’ Lessons in progress β€’ Lessons not yet started Use the progress dashboard to see how far you have come and continue your learning routine. ## CREATE A DAILY LEARNING SCHEDULE Build a consistent study routine with the Learning Schedule feature. β€’ Set your preferred study time β€’ Choose a 15, 30, or 45-minute session, or 1 hour β€’ Select repeat days β€’ Enable study reminders β€’ Save your schedule Plan your learning around your daily routine and receive reminders at your selected time. ## SAVE NOTES AND BOOKMARK LESSONS Keep useful information organized as you study. Use My Notes to save important points and bookmark lessons you want to revisit later. ## EXPLORE COMMUNITY HELP Browse programming questions, answers, and shared solutions. Discover popular questions, explore programming categories, and search for community discussions when you want additional explanations. ## PERSONALIZE YOUR LEARNING EXPERIENCE Adjust the app to suit your preferences. Available settings include: β€’ Light and dark appearance β€’ App language preferences β€’ Adjustable text size β€’ Notification settings β€’ Learning schedule β€’ Bookmarked lessons β€’ Saved notes ## WHY LEARN COBOL PROFESSIONAL? β€’ 10 organized COBOL chapters β€’ 80 structured lessons β€’ 82 quiz questions β€’ COBOL fundamentals and program structure β€’ Data types, variables, and file handling topics β€’ Built-in multi-language code editor β€’ Quick programming examples β€’ Lesson and topic search β€’ Progress and daily streak tracking β€’ Learning schedules and reminders β€’ Notes and bookmarked lessons β€’ Community programming questions

About

Rock Identifier

Features
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Found a rock, crystal or gemstone and wondering what it is? Snap a photo and Stonectra's AI identifies it, then shows you what it's made of, where it forms and what it may be worth. Built for rockhounds, collectors, students and curious explorers, Stonectra turns your iPhone into a pocket geology guide. IDENTIFY FROM A PHOTO β€’ Take a picture or upload one from your gallery β€’ Identify rocks, minerals, crystals, stones and gemstones β€’ Get the name and a clear overview of your specimen KNOW YOUR STONE Every result opens a detailed profile: β€’ Physical properties: crystal system, color, luster, streak, Mohs hardness, cleavage, fracture and more β€’ Chemical properties: classification, formula and density β€’ Occurrence: the geological settings where it forms, such as veins, pegmatites or geodes β€’ Uses and history in industry, jewelry and collecting β€’ Care tips plus health and safety notes for handling ESTIMATE ITS VALUE See estimated price ranges for selected gems, minerals and crystals, and use the built-in Price Calculator to estimate value by weight. Estimates are for informational purposes only and vary with quality, size, rarity, origin and market demand. ASK THE AI STONE ASSISTANT Chat about geology, minerals, crystals and rockhounding anytime: β€’ "How can I tell ruby from garnet?" β€’ "How and where does aquamarine form?" β€’ "What does Mohs hardness mean?" β€’ "How do I start a rock collection?" BUILD YOUR COLLECTION Save your finds to a personal digital collection, organize your specimens and keep a Favorites list of stones you love or want to find next. iCloud Sync keeps your collection backed up across your devices. GREAT FOR β€’ Rockhounds identifying finds from hikes, rivers and beaches β€’ Collectors cataloging and valuing specimens β€’ Students learning earth science and mineralogy β€’ Anyone curious about the stones beneath their feet Download Stonectra and find out what you found. Privacy Policy: https://thebariscc.github.io/Stonectra/PrivacyPolicy.html Terms & Conditions: https://thebariscc.github.io/Stonectra/TermsAndConditions.html Support: https://thebariscc.github.io/Stonectra/Support.html

Screenshots

Learn Cobol Programming Pro4 screens
Rock Identifier4 screens

Verdict

The call

The clearest difference is price: Rock Identifier at Free against Learn Cobol Programming Pro's $2.99. Rock Identifier also leads on update cadence (every 6 weeks vs every 9 months). Learn Cobol Programming Pro's advantage is in-app purchases (none vs 2) and chart position (#200 vs unranked). On ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Rock Identifier is free to download; Learn Cobol Programming Pro costs $2.99 up front. Rock Identifier sells 2 in-app purchases, starting at $3.99 per 7 days. Learn Cobol Programming Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Learn Cobol Programming Pro ships an update every 9 months, Rock Identifier every 6 weeks. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

Scorecard5 real differences Β· 2 level
Learn Cobol Programming Pro versus Rock Identifier: the parameters behind the verdict, then further details
ParameterLearn Cobol Programming ProRock Identifier
Price$2.99Free β€” better
Update frequencyEvery 9 monthsEvery 6 weeks β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
Best chart rank#200 β€” betterβ€”
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.6 β€” better17.0
Further details β€” not scored
Size74 MB29 MB
Age rating+94+
DeveloperMuhammad UmairBaris Can Ceylan

In-app purchases

None

Learn Cobol Programming Pro

No in-app purchases

2 purchases

Rock Identifier

Subscriptions2
  • Weekly Pro3 Days trial$3.997 Days
  • Annual Pro (SAVE %80)$39.991 Year

Questions

Is Learn Cobol Programming Pro free?
Learn Cobol Programming Pro costs $2.99, with no in-app purchases.
Is Rock Identifier free?
Rock Identifier is free to download, with in-app purchases available.
Do Learn Cobol Programming Pro or Rock Identifier have ads?
Neither Learn Cobol Programming Pro nor Rock Identifier shows ads.
Which is updated more often, Learn Cobol Programming Pro or Rock Identifier?
Learn Cobol Programming Pro ships an update every 9 months, and Rock Identifier every 6 weeks. Most recently, Learn Cobol Programming Pro was updated on November 8, 2026 and Rock Identifier on October 30, 2026.

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