Study Guide Hub
Interview Prep: Code & AI
$0.99 · In‑App Purchases · Designed for iPad. Not verified for macOS.
New: AI, Automation & Cloud Pack — 12 guides from Machine Learning and LangChain to UiPath, Copilot, Azure, AWS and Google Cloud. All 10 programming guides are free.
Study Guide Hub is your pocket-sized companion for technical interview prep and everyday reference — built for developers, automation and cloud professionals who want to truly understand what they're working with.
Whether you're preparing for an interview or moving into AI, automation or cloud roles, Study Guide Hub turns dense documentation into focused guides you can learn from anywhere, even offline.
10 PROGRAMMING GUIDES — FREE
• C# / .NET — type system, async/await, LINQ, generics, memory management, and modern C# features
• Python — data types, closures, comprehensions, OOP, asyncio, and the CPython runtime model
• JavaScript — types and coercion, closures, the event loop, prototypes, and modern ES features
• TypeScript — types, generics, narrowing, utility and mapped types, and strictness
• Java — core language, collections, generics, concurrency, and the JVM
• Go — goroutines, channels, interfaces, generics, and the runtime
• Rust — ownership, borrowing, lifetimes, traits, and fearless concurrency
• C++ — RAII, smart pointers, move semantics, templates, and the STL
• Scala — functional and object-oriented features, collections, and pattern matching
• Angular — components, services, RxJS, signals, routing, and app structure
• All ten are completely free — no purchase, no daily limits, no account
AI, AUTOMATION & CLOUD PACK — 12 GUIDES, ONE MONTHLY SUBSCRIPTION
• Machine Learning — the workflow, linear regression to gradient boosting, metrics, tuning, MLOps
• Deep Learning & LLMs — neural networks, transformers, prompting, RAG, agents and tool use, evaluation, serving
• Python for Data & AI — NumPy, pandas, visualization, statistics, scikit-learn and PyTorch, production pipelines
• LangChain — chat models, LCEL, structured output, tools, RAG, memory, LangGraph agents, LangSmith evaluation
• Microsoft Foundry — projects, model catalog, Azure OpenAI and Claude, agents, Azure AI Search, evaluation, safety
• UiPath — Studio, selectors, Orchestrator, queues, REFramework, Document Understanding, agents, Test Suite
• Appian — SAIL, records and Data Fabric, interfaces, process models, integrations, RPA, AI skills, deployment
• Power Automate — cloud flows, expressions, error handling, Dataverse, desktop flows, AI Builder, agent flows
• Microsoft Copilot — Microsoft 365 Copilot, Copilot Studio agents, declarative agents, GitHub Copilot, licensing
• Microsoft Azure — identity, Bicep, App Service, Container Apps, AKS, storage, data, networking, DevOps, landing zones
• AWS — IAM, CloudFormation and CDK, EC2, Lambda, ECS and EKS, S3, RDS and DynamoDB, VPC, Bedrock, Well-Architected
• Google Cloud — IAM, Terraform, Compute Engine, Cloud Run, GKE, Cloud Storage, Cloud SQL and Spanner, BigQuery, Vertex AI
• One low monthly subscription, cancel anytime. Every future AI, Automation & Cloud guide included. No account needed.
LEARN BY DOING
• A worked example on every section
• "In Practice" — how each concept is applied in real scenarios across finance, healthcare, logistics, and more
• Knowledge Check — a quick self-test at the end of every section
FILTER BY DIFFICULTY
• Focus any guide by Beginner, Intermediate, or Advanced
QUIZ MODE
• Multiple-choice or flashcard style — your pick
• Spaced-repetition review brings each question back right before you'd forget it
• Grade your recall — Again, Hard, Good, or Easy — to tune the schedule
PROGRESS & FAVORITES
• Mark sections complete to track your study progress
• Favorite any section for instant access
100% OFFLINE
• All content lives on your device — study anywhere, even without a signal
Available in English and Spanish.
The pack is an auto-renewing monthly subscription billed to your Apple ID. It renews unless cancelled at least 24 hours before the current period ends; manage it in your Apple ID account settings. Terms of Use: https://www.triangulumsoftware.com/studyguidehub/terms/ Privacy: https://www.triangulumsoftware.com/studyguidehub/privacy/
Built by Triangulum.
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Study Guide Hub now covers AI, automation and cloud — and every programming guide is free.
• All 10 programming guides are now free: C#, Python, JavaScript, TypeScript, Java, Go, Rust, C++, Scala, and Angular — no purchase, no daily quiz limit, unlimited favorites
• New AI, Automation & Cloud Pack (monthly subscription, cancel anytime): twelve new guides — Machine Learning, Deep Learning & LLMs, Python for Data & AI, LangChain, Microsoft Foundry, UiPath, Appian, Power Automate, Microsoft Copilot, Microsoft Azure, AWS, and Google Cloud
• 240 new sections with 720 topics, 960 interview questions, and 480 real-world "In Practice" examples
• The guide picker is now organized by category: Languages, Frameworks, AI & Data, Automation, and Cloud
• New Subscription page in the menu: see your plan, subscribe, manage or cancel, restore purchases, and read our Terms of Use and Privacy Policy
• Already bought Pro? Thank you — you own the AI, Automation & Cloud Pack for life, nothing to renew
Thanks for using Study Guide Hub!
The developer, Triangulum, Inc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- Triangulum, Inc
- Size
- 60 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- AI, Automation & Cloud Pack $2.99
- Copyright
- © 2026 Triangulum, Inc.
