Comparison

Arduino Programming Pro vs BlueGrays

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

Head to head
About

Arduino Programming Pro

Master Arduino programming with over 200 practical lessons, circuit diagrams, and code examples. This app guides beginners and experienced users through electronics and project building in 14 languages. The Pro version offers advanced features for enhanced learning.

Highlights
  • 200+ practical lessons
  • Circuit diagrams and wiring guides
  • Ready-to-use code examples
  • Interactive quiz questions
  • Support for 14 languages
  • Full-text search (Pro version)
  • Favorites for saving topics (Pro version)
Features
Read full description

Learn Arduino programming from scratch with 200+ practical lessons, circuit diagrams, and ready-to-use code examples. For beginners, students, hobbyists, and engineers looking to learn Arduino from scratch or advance their skills — build real projects, understand electronics, and master Arduino. The app includes a wide collection of electronic components, analog and digital sensors, and external modules used with Arduino. Each topic includes: • Clear, detailed explanations of how components work • Step-by-step wiring instructions and circuit guidance • Integration steps with practical usage tips • Ready-to-use Arduino code examples • Interactive quiz questions Available in 14 Languages: • English, French, German, Indonesian, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian, and Vietnamese — study in your native language! The Pro version includes additional tools for faster learning and easier navigation: • Advanced lessons, circuit diagrams, and code samples • Full-text search across all Arduino lessons and components • Favorites to save and organize important topics The application provides detailed lessons and wiring guides for a wide range of hardware components commonly used with Arduino, including: • GPIO, buttons, LEDs • ADC, PWM • UART, I2C, SPI communication • Distance, motion, and infrared sensors • Temperature, humidity, and pressure sensors • Light, sound, gas, and touch sensors • LCD and OLED displays • Motors, relays, and actuators • Accelerometers and gyroscopes • Real-time clock modules These examples include wiring diagrams, explanations, and ready-to-use Arduino code. The built-in programming course covers essential C++ topics used in Arduino development: • Data types and variables • Operators and expressions • Control structures and loops • Arrays and strings • Functions and scope • Math and random functions • Bitwise operations • Preprocessor directives All lessons, component descriptions, and quizzes are regularly updated and expanded in every new app version. "Arduino" and all other mentioned trade names are trademarks of their respective owners. This app is an independent educational product and is not affiliated with, endorsed by, sponsored by, or associated with Arduino or any other company.

About

BlueGrays

This app provides over 160 hands-on projects for Arduino, ESP32, and Raspberry Pi Pico, complete with code, diagrams, and video guides. It helps users discover projects based on the parts they own and offers a suite of electronics tools and component guides.

Highlights
  • 160+ microcontroller projects
  • Ready-to-upload code
  • Circuit diagrams and video walkthroughs
  • Project discovery based on owned parts
  • 125+ component guides
  • 18 electronics calculators
  • Pinout maps for popular boards
Features
Read full description

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/

Screenshots

Arduino Programming Pro4 screens
BlueGrays4 screens

Verdict

The call

The clearest difference is price: BlueGrays at Free against Arduino Programming Pro's $4.99. BlueGrays also leads on update cadence (every 4 days vs every 6 weeks) and iOS requirement (15.1 vs 17.0). Arduino Programming Pro's advantage is in-app purchases (none vs 10) and rating (4.6 vs 4.2). On review sentiment, ratings volume, ads and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

BlueGrays is free to download; Arduino Programming Pro costs $4.99 up front. BlueGrays sells 10 in-app purchases, starting at $2.99 per month. Arduino Programming Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Arduino Programming Pro holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 5 and 14 respectively. Written reviews point the same way: 71% of Arduino Programming Pro's written reviews are positive against 64% of BlueGrays's.

UpkeepUpdate frequency

Arduino Programming Pro ships an update every 6 weeks, BlueGrays every 4 days. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

Scorecard6 real differences · 4 level
Arduino Programming Pro versus BlueGrays: the parameters behind the verdict, then further details
ParameterArduino Programming ProBlueGrays
Price$4.99Free — better
Rating4.6 (5 ratings) — better4.2 (14 ratings)
Positive reviews71.4% of reviews — better64.3% of reviews
Number of ratings514 — better
Update frequencyEvery 6 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size45 MB56 MB
Age rating4+4+
DeveloperALG Software LabYunus Emre Eke

Customer experience

Arduino Programming Pro

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews7 reviews
Positive71.4%
Neutral14.3%
Negative14.3%

BlueGrays

All ratings14 ratings
Positive78.6%
Neutral0.0%
Negative21.4%
Written reviews14 reviews
Positive64.3%
Neutral0.0%
Negative35.7%

In-app purchases

None

Arduino Programming Pro

No in-app purchases

10 purchases

BlueGrays

Subscriptions3
  • Premium (Monthly)$2.991 Month
  • Premium (Yearly)$11.991 Year
  • Premium (Yearly)$19.991 Year
One-time7
  • Lifetime Premium · Special$49.99
  • Lifetime Premium$79.99
  • 50x Monthly Educator Pack$219.99
Show 4 more
  • 5x Lifetime Educator Pack$399.99
  • 10x Lifetime Educator Pack$749.99
  • 50x Yearly Educator Pack$889.99
  • 50x Lifetime Educator Pack$949.99

Questions

Is Arduino Programming Pro free?
Arduino Programming Pro costs $4.99, with no in-app purchases.
Is BlueGrays free?
BlueGrays is free to download, with in-app purchases available.
Which has better reviews, Arduino Programming Pro or BlueGrays?
Arduino Programming Pro is rated higher. Arduino Programming Pro averages 4.6 out of 5 from 5 ratings, while BlueGrays averages 4.2 from 14 ratings.
Do Arduino Programming Pro or BlueGrays have ads?
Neither Arduino Programming Pro nor BlueGrays shows ads.
Which is updated more often, Arduino Programming Pro or BlueGrays?
Arduino Programming Pro ships an update every 6 weeks, and BlueGrays every 4 days. Most recently, Arduino Programming Pro was updated on November 6, 2026 and BlueGrays on November 4, 2026.

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