Comparison

CrystalGen vs JuLearn

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

Head to head
About

CrystalGen

Features
Read full description

Visualize minerals from basic crystallographic information. Symmetry, unit cell dimension, and habit

About

JuLearn

Master Julia programming with a comprehensive, offline learning path. Covers fundamentals to advanced scientific computing and metaprogramming through structured units, coding exercises, and flashcards. Ideal for developers, scientists, and data analysts.

Highlights
  • 12 in-depth learning units
  • 70 coding exercises per unit
  • Julia Cheatsheet
  • Julia & TensorFlow Flashcards
  • Progress tracking
  • Full offline access
  • Daily coding challenges
Features
Read full description

JuLearn: Master Julia Programming Learn Julia from the fundamentals to advanced scientific computing with a structured, hands-on learning experience designed for developers, researchers, scientists, and data professionals. JuLearn brings tutorials, coding practice, flashcards, reference tools, and daily challenges together in one app. Learn at your own pace, track your progress, and keep studying anywhere with full offline access. COMPLETE JULIA LEARNING EXPERIENCE • 12 in-depth learning units from core syntax to advanced scientific computing • 100 coding exercises per unit to reinforce key concepts • 250 focused Julia learning topics covering essential programming skills • 1,200 flashcards across 12 Julia units • Julia Cheatsheet for quick syntax and concept reference • Comprehensive lecture notes with practical examples • Daily Julia coding challenges • Progress tracking throughout your learning journey • 12 interface themes • Support for 8 interface languages • Full offline access • No ads, subscriptions, or hidden fees LEARNING UNITS 1. Julia Programming Fundamentals 2. Control Flow & Logic 3. Functions & Methods 4. Collections & Arrays 5. Type System & Custom Types 6. Metaprogramming 7. Julia Symbolics 8. Data Science Tools 9. Linear Algebra 10. Parallel Computing 11. Julia Tensors 12. Scientific Computing BUILT FOR HANDS-ON LEARNING Each unit combines clear explanations with practical Julia code so you can move from understanding a concept to applying it. • Syntax-highlighted code examples • Step-by-step explanations • Practical scientific computing examples • Best-practice tips • Visual learning aids • Color-coded sections for easier navigation • Coding exercises designed to strengthen retention WHAT YOU'LL LEARN • Work confidently with Julia syntax and the REPL • Understand Julia's type system and multiple dispatch • Build functions, methods, arrays, and custom types • Work with data analysis and scientific computing workflows • Explore symbolic mathematics and tensor operations • Use metaprogramming for flexible code generation • Understand concurrent and parallel computing concepts • Apply linear algebra and numerical computing techniques • Develop stronger habits for writing clear, efficient Julia code MADE FOR • Developers learning Julia • Data scientists and analysts • Researchers and academics • Scientific computing professionals • High-performance computing engineers • Machine learning practitioners • Numerical analysts and mathematicians • Scientists moving from Python, MATLAB, R, or other technical computing environments LEARN ANYWHERE JuLearn works offline, so your tutorials, exercises, flashcards, notes, and reference materials are available whenever you want to study. ONE-TIME ACCESS Download once and get the complete learning experience with no subscriptions, no recurring fees, and no advertising. Start learning Julia with JuLearn and build practical skills for scientific computing, data analysis, numerical programming, and high-performance technical workflows.

Screenshots

CrystalGen4 screens
JuLearn4 screens

Verdict

The call

The clearest difference is update cadence: JuLearn at every 2 months against CrystalGen's every 38 months. JuLearn also leads on iOS requirement (15.1 vs 17.2). CrystalGen's advantage is price ($2.99 vs $5.99). On ads, in-app purchases and device support there is nothing between them.

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

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

CrystalGen costs $2.99 and JuLearn $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CrystalGen ships an update every 38 months, JuLearn every 2 months. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

Scorecard3 real differences Ā· 4 level
CrystalGen versus JuLearn: the parameters behind the verdict, then further details
ParameterCrystalGenJuLearn
Price$2.99 — better$5.99
Update frequencyEvery 38 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.215.1 — better
Further details — not scored
Size3 MB57 MB
Age rating4+4+
DeveloperSteve KliewerSimTeCon GmbH

In-app purchases

None

CrystalGen

No in-app purchases

None

JuLearn

No in-app purchases

Questions

Is CrystalGen free?
CrystalGen costs $2.99, with no in-app purchases.
Is JuLearn free?
JuLearn costs $5.99, with no in-app purchases.
Do CrystalGen or JuLearn have ads?
Neither CrystalGen nor JuLearn shows ads.
Which is updated more often, CrystalGen or JuLearn?
CrystalGen ships an update every 38 months, and JuLearn every 2 months. Most recently, CrystalGen was updated on October 19, 2026 and JuLearn on October 6, 2026.

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