# BlueGrays - Arduino Projects — Arduino, ESP32 & IoT Projects > Interactive electronics learning platform with projects, component catalog, and inventory. (iPhone/iPad app by Yunus Emre Eke.) - Source: https://appshunter.io/ios/app/bluegrays-arduino-projects/id6502332602 (this page in markdown: same URL + `.md`) - Developer: [Yunus Emre Eke](https://appshunter.io/developer/1713998736) - Category: Education, Developer Tools - Price: Free with in-app purchases - Rating: 4.21/5 from 14 App Store ratings · 14 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 52 MB - Languages: English, French, German, Italian, Spanish, Turkish - Released: 2024-05-28 - Data updated: 2026-10-24 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/bluegrays-arduino-projects/id6502332602/reviews.md ## What is BlueGrays? 160+ Arduino, ESP32 and Raspberry Pi Pico projects, each with ready-to-upload code, a circuit diagram, the parts list and a video walkthrough. Tell BlueGrays which parts you own and it shows the projects you can build right now. Plus 125+ component guides, 18 electronics calculators and pinout maps for the boards. PROJECTS • Arduino projects, ESP32 projects and Raspberry Pi Pico projects in one place • Step-by-step guide: parts, circuit, code and testing • Wokwi simulation videos in new projects: watch the circuit run before you build it • Rate projects, save favorites and track the ones you complete WHAT CAN I BUILD WITH MY PARTS • Workshop: save the components you own, with quantities • See the projects you can build with your parts and the ones missing the fewest • Project Finder: answer a few questions and get an Arduino, ESP32 or Pico project that fits you 18 ELECTRONICS TOOLS • Resistor color code and SMD code decoder • Ohm's law, LED resistor, series/parallel resistor and voltage divider calculators • 555 timer, op-amp gain, RC time constant and battery life • Capacitor code, inductor code, series/parallel capacitors and standard values • LED voltages, transistor table and logic gates • Save your calculations and share the results PINOUT • Pin maps for Arduino, ESP32 and Raspberry Pi Pico boards • Tap a pin to see what it does and what it is good for COMPONENT CATALOG • 125+ components: sensors, modules, motors, displays and more • Specs, use cases and the projects each component appears in • Add components to your Workshop straight from their page BADGES AND LEVELS • Earn badges as you learn and reach Bronze, Silver, Gold, Platinum and Diamond tiers FOR EDUCATORS • Bulk Premium code packs of 5 and 10 for your class MORE • Blog: step-by-step electronics guides on bluegrays.com • 6 languages: English, Turkish, German, Spanish, French, Italian PREMIUM Starter projects and the basic tools are open to everyone. BlueGrays Premium unlocks all projects, the full component catalog, Workshop, every tool and the pinout maps. SUBSCRIPTION INFORMATION • BlueGrays Premium unlocks unlimited access to all projects, the full component catalog, and the My Workshop inventory feature. • Payment is charged to your Apple ID account upon confirmation of purchase. • Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. • You can manage and cancel your subscription in Settings > Apple ID > Subscriptions after purchase. • Privacy Policy: https://bluegrays.com/privacy/ • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Free starter projects - Unlimited Arduino/ESP32/IoT projects - Detailed circuit diagrams and code - Component catalog with specifications - Personal inventory management - Gamified learning with badges and levels - Multi-language support ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium (Monthly) | $2.99 | per month | | Premium (Yearly) | $11.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 5x Aylık Eğitimci Paketi | $12.99 | one-time | | 10x Aylık Eğitimci Paketi | $23.99 | one-time | | 10x Yıllık Eğitimci Paketi | $101.99 | one-time | | 5x Yıllık Eğitimci Paketi | $53.99 | one-time | ## Is BlueGrays safe? Not enough ratings yet to assess BlueGrays. ## Is BlueGrays legit? BlueGrays - Arduino Projects appears to be a legitimate app. The AppsHunter Legitimacy Score for BlueGrays is 85 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (10 of 14) All indexed reviews: https://appshunter.io/ios/app/bluegrays-arduino-projects/id6502332602/reviews.md ### 1/5 — Yararsız *2026-03-29, version 2.3.0* Bu uygulama yerine farklı sitelerden daha detaylı bir şekilde yararlanıla bilir uygulama içeriği çok boş ### 5/5 — Süper!! *2026-03-22, version 2.2.2* Arduino hakkında o kadar uygulama denedim ancak bu kadar profunu görmedim. Çok faydalı olmuş emeğinize sağlık… ### 5/5 — Helal be *2026-03-15, version 2.1.3* Uygulama çok iyi başlangıç için biraz daha fazla ücretsiz proje olursa daha iyi olur ama zaten paralı versyonda çok ucuz ### 4/5 — Kumsar Şenol *2026-03-14, version 2.1.3* Sorun Çözüldü . Başarılar diliyorum ### 5/5 — Başarılı *2026-03-13, version 2.1.3* Arduino ve ESP32 öğrenmek için çok güzel bir uygulama. Projeler ve devre şemaları oldukça faydalı. Tavsiye ederim. ### 2/5 — . *2026-03-11, version 2.1.1* Ücret ödemediğiniz sürece asıl önemli olan özelliklere erişiminiz yok ücretsiz planda sadece led yakma gibi basit çalışmaları yapabiliyorsunuz ayrıca uygulamayı indirme sebebim olan atölyem özelliğide ücretliymiş en azından deneme sürümü olabilirdi ve uygulamada gezinebilmek için bile kayıt istiyor en azından gezinmek için üyelik gerekmese iyi olurdu ### 1/5 — Uygulama içi satın alma *2026-03-11, version 2.1.1* Basit led yakma projeleri (5-10 adet) haricinde uygulamada her şey ücret istiyor. Biraz kullanıma izin verilmeli. 2 led yakmayı gösteriyor diye uygulamayı güzel ya da kötü yorumlayamayız. En azından birkaç deneme hakkı ya da deneme süresi verilmeli. ### 5/5 — Başarılı *2026-03-08, version 2.1.1* Uygulama çok başarılı , bir üniversite öğrencisi olarak aradığım şeyleri bulmamı sağladını söyleyebilirim. Özellikle tüm üniversite öğrencilerine önerdiğimi , bitirme projesi süreçlerinizde sizlere yardımcı olacağının altını çizerim. ### 5/5 — Hesap askıda kodlar gözükmüyor *2025-12-14, version 1.2.1* Uygulama çok ama çok iyi fakat hesap askıya alındığı için kodlar gözükmüyor lütfen acilen çözülsün ### 1/5 — All the accounts are suspended *2025-12-13* You can’t do anything with this stupid app. All the accounts are suspended so you have absolutely no access to the codes. ## Frequently asked questions about BlueGrays ### What is BlueGrays? BlueGrays is an educational app designed to help users learn electronics through interactive projects, a comprehensive component catalog, and personal inventory tracking. It offers both free starter projects and premium access to advanced content. ### How does BlueGrays' learning methodology work? BlueGrays uses a project-based learning approach, providing detailed circuit diagrams, code snippets, and video tutorials for various electronics projects. It also incorporates gamification with badges and levels to track progress and maintain motivation. ### What are the subscription options for BlueGrays Premium? BlueGrays Premium offers two subscription plans: a monthly plan for $2.99 and a yearly plan for $11.99. These plans unlock unlimited access to all projects, the full component catalog, and the My Workshop inventory feature. ### Can I cancel my BlueGrays Premium subscription? Yes, you can manage and cancel your subscription at any time by going to Settings > Apple ID > Subscriptions after purchase. Subscriptions must be cancelled at least 24 hours before the end of the current period to avoid automatic renewal. ### Does BlueGrays have ads? Yes, BlueGrays contains advertisements. As a free app with optional in-app purchases for premium features, advertisements are displayed to support its continued development and availability. ### What devices is BlueGrays available on? BlueGrays is currently supported on iPhones and iPods. It is rated for ages 4 and up, making it suitable for a wide range of young learners and hobbyists. ### How often is BlueGrays updated? The latest version of BlueGrays is 2.2.3, and it was last updated on March 25, 2026. This indicates a commitment to regular updates and feature enhancements for users. ### What languages does BlueGrays support? BlueGrays offers multi-language support, including Turkish (TR), English (EN), German (DE), Spanish (ES), French (FR), and Italian (IT). This broad language availability makes it accessible to a global audience. ## Version history (last 5 releases) ### 3.2.0 — 2026-10-23 New: Understand the code Every project's Code step now has an "Understand the code" tab. It walks you through what the code does, piece by piece, in plain words. It also lists common mistakes with their fixes and gives you a small task to try by changing the code. Also - Refreshed sign-in screen. - Small fixes and improvements. ### 3.1.1 — 2026-10-18 Bug fixes and performance improvements have been made. We regularly update BlueGrays to make your experience smoother. ### 3.0.0 — 2026-10-17 Bug fixes and performance improvements have been made. We regularly update BlueGrays to make your experience smoother. ### 2.4.2 — 2026-06-18 Bug fixes and performance improvements have been made. We regularly update BlueGrays to make your experience smoother. ### 2.4.1 — 2026-06-01 Bug fixes and performance improvements have been made. We regularly update BlueGrays to make your experience smoother. ## Apps similar to BlueGrays | App | Rating | Price | Category | | --- | --- | --- | --- | | [Workshop for Arduino](https://appshunter.io/ios/app/workshop-for-arduino/id1638636973) | 3.3 (3) | Free | Education | | [Arduino Pocket Reference](https://appshunter.io/ios/app/arduino-pocket-reference/id969849288) | 2.3 (18) | Free | Education | | [Digital Electronics Guide](https://appshunter.io/ios/app/digital-electronics-guide/id6478166232) | 5.0 (2) | Free | Education | | [Arduino Programming Pro](https://appshunter.io/ios/app/arduino-programming-pro/id6447102673) | 4.6 (5) | $4.99 | Education | | [Arduino Programming Tutorial](https://appshunter.io/ios/app/arduino-programming-tutorial/id6446804186) | 3.0 (1) | Free | Education | | [Learn Electronics & Arduino](https://appshunter.io/ios/app/learn-electronics-and-arduino/id6786012093) | 4.2 (5) | Free | Education | ## More apps by Yunus Emre Eke - [El İşi Dünyası](https://appshunter.io/ios/app/el-isi-dunyas/id6470683720) - [Cardenix: AI Card Scanner](https://appshunter.io/ios/app/cardenix-ai-card-scanner/id6760647627) - [Rn Teknoloji](https://appshunter.io/ios/app/rn-teknoloji/id6762559630) - [AYNA Salon: мастера красоты](https://appshunter.io/ios/app/ayna-salon/id6819302614) All apps by Yunus Emre Eke: https://appshunter.io/developer/1713998736 ## Related topics [projects electronic](https://appshunter.io/ios/topics/projects-electronic) · [electronics learning](https://appshunter.io/ios/topics/electronics-learning) · [electronics learn](https://appshunter.io/ios/topics/electronics-learn) · [electronics education](https://appshunter.io/ios/topics/electronics-education) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*