CrystalGen vs JuLearn
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
CrystalGen
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Visualize minerals from basic crystallographic information. Symmetry, unit cell dimension, and habit
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.
- 12 in-depth learning units
- 70 coding exercises per unit
- Julia Cheatsheet
- Julia & TensorFlow Flashcards
- Progress tracking
- Full offline access
- Daily coding challenges
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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
Verdict
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
CrystalGen costs $2.99 and JuLearn $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | CrystalGen | JuLearn |
|---|---|---|
| Price | $2.99 ā better | $5.99 |
| Update frequency | Every 38 months | Every 2 months ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | ā | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod ā better |
| Requires iOS | 17.2 | 15.1 ā better |
| Further details ā not scored | ||
| Size | 3 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Steve Kliewer | SimTeCon GmbH |
In-app purchases
CrystalGen
No in-app purchases
JuLearn
No in-app purchases









