---
title: "Study Guide Hub - Reviews, Revenue and Downloads in Brazil | Apple App Store"
description: "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 "
---

# Study Guide Hub — Brazil

![Study Guide Hub App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/4c/cd/d8/4ccdd809-694e-562f-9584-c8615d0a8934/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Triangulum](https://apptail.io/developer/triangulum-zMpe)
**Category:** Education
**Rating:** N/A (0 ratings)
**Price:** 6.90 R$
**Bundle ID:** com.triangulum.studyguidehub
**Store:** Apple App Store
**Country:** Brazil
**Version:** 1.4 (released 2026-09-10)
**Original Release:** 2026-05-26

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/br/app/app/id6771534708)
**AppTail Page:** [https://apptail.io/app/study-guide-hub-OBRz/brazil](https://apptail.io/app/study-guide-hub-OBRz/brazil)

## Study Guide Hub Description
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:  Privacy: 

Built by Triangulum.

## Study Guide Hub Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/64/c4/70/64c470f2-4abc-f8b0-88c5-73836c954d69/01_guide_select_iphone_6.9in.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8c/80/99/8c8099b7-9df4-eb5a-75d7-cb85363cd904/03_section_detail_iphone_6.9in.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a0/4a/c6/a04ac60a-05d2-3d89-5f3d-3f9d1c09ea53/06_in_practice_iphone_6.9in.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/a5/77/3b/a5773b8c-8c4c-9ff7-cc60-fcc015fcba80/08_quiz_mc_iphone_6.9in.png/1320x2868.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8d/9b/82/8d9b829d-c344-fbf4-6435-7ffa56d2c011/07_knowledge_check_iphone_6.9in.png/1320x2868.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/52/d5/a1/52d5a164-814f-919c-038a-2f52391c6348/05_paywall_iphone_6.9in.png/1320x2868.png)







## Study Guide Hub Available In
- [Brazil](https://apptail.io/app/study-guide-hub-OBRz/brazil)
- [Switzerland](https://apptail.io/app/study-guide-hub-OBRz/switzerland)
- [Iceland](https://apptail.io/app/study-guide-hub-OBRz/iceland)
- [North Macedonia](https://apptail.io/app/study-guide-hub-OBRz/north-macedonia)
- [Russia](https://apptail.io/app/study-guide-hub-OBRz/russia)
- [Senegal](https://apptail.io/app/study-guide-hub-OBRz/senegal)

---

## About AppTail

[AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends.

- [Search Apps](https://apptail.io)
- [Top Charts](https://apptail.io/top-iphone-apps)
- [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer)

*Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*