Comparison

BlueGrays vs AVR Projects

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

Head to head
About

BlueGrays

Learn electronics with interactive projects, a component catalog, and personal inventory management. Start with free projects and unlock full access to Arduino, ESP32, and IoT content with a premium subscription. Gamified learning with badges and levels keeps you motivated.

Highlights
  • 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
Features
Read full description

Learning electronics has never been this easy and fun with BlueGrays! Start with free projects right away, and unlock all content with Premium when you're ready. Whether you're a student or a hobbyist, BlueGrays gives you everything you need. — START FOR FREE — • Begin learning electronics with curated starter projects • Explore basic components and their specifications • Try the app and see if it's right for you — EXPLORE PROJECTS (Premium) — • Unlimited access to Arduino, ESP32, ESP8266 and IoT projects • Detailed circuit diagrams, code snippets, and video tutorials for each project • See required components and add missing ones to your inventory • Rate projects and save your favorites • Track your completed projects — COMPONENT CATALOG (Premium) — • Full access to extensive electronic component database • Detailed specifications and use cases • Filter, sort, and easily find what you need • Add components directly to your inventory — MY WORKSHOP - PERSONAL INVENTORY (Premium) — • Track the components you own • Add quantities, notes, and custom names • Check for missing components before starting a project • Edit and update your inventory anytime — BADGES & LEVELS — • Earn achievement badges as you learn • Reach Bronze, Silver, Gold, Platinum, and Diamond tiers • Track your progress across categories • Stay motivated with gamified learning! — MORE FEATURES — • Push notifications for new projects • Multi-language support (TR, EN, DE, ES, FR, IT) • Favorites and completed projects list • Personal profile and progress tracking BlueGrays is built for the maker and electronics community. Download now and start your electronics journey for free! — 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/

About

AVR Projects

Features
Read full description

AVR Projects is an app for those who are learning AVR Microcontroller programming, and it contains demo projects for makers, electronic enthusiast and engineering students. It focuses on ATmega328p, which is a microcontroller IC on Arduino Uno, and Atmel (Microchip) Studio IDE. * Learn AVR Microcontroller Programming with example codes in Embedded written on Atmel Studio IDE, Proteus simulation files, circuit diagrams and descriptions. * Easy to access sensors and ICs’s datasheets. More projects will be added soon!

Screenshots

BlueGrays4 screens
AVR Projects4 screens

Verdict

The call

The clearest difference is ads: AVR Projects at none against BlueGrays's shown. AVR Projects also leads on update cadence (daily vs every 6 days). BlueGrays's advantage is iOS requirement (15.1 vs 17.0). On price, in-app purchases 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

Both are free to download. BlueGrays sells 6 in-app purchases, starting at $2.99 per month and AVR Projects sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BlueGrays ships an update every 6 days, AVR Projects daily. The most recent releases landed on September 17, 2026 and September 26, 2026 respectively.

Scorecard3 real differences · 7 level
BlueGrays versus AVR Projects: the parameters behind the verdict, then further details
ParameterBlueGraysAVR Projects
PriceFreeFree
Rating4.4 (11 ratings) — better—
Positive reviews64.3% of reviews—
Number of ratings11 — better—
Update frequencyEvery 6 daysDaily — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size51 MB20 MB
Age rating4+4+
DeveloperYunus Emre EkeZaw Win Myat

In-app purchases

6 purchases

BlueGrays

Subscriptions2
  • Premium (Monthly)$2.991 Month
  • Premium (Yearly)$11.991 Year
One-time4
  • 5x Aylık Eğitimci Paketi$12.99
  • 10x Aylık Eğitimci Paketi$23.99
  • 5x Yıllık Eğitimci Paketi$53.99
Show 1 more
  • 10x Yıllık Eğitimci Paketi$101.99
10 purchases

AVR Projects

One-time10
  • R2R Ladder DAC$0.99
  • Sawtooth Waveform$0.99
  • Triangular Waveform$0.99
Show 7 more
  • Sine Waveform$0.99
  • Ammeter AVR$0.99
  • 4x3 Matrix Keypad$0.99
  • Ohm Meter AVR$0.99
  • Voltmeter AVR$0.99
  • TM1637 Interfacing with AVR$0.99
  • Graphic LCD Interfacing$0.99

Questions

Is BlueGrays free?
BlueGrays is free to download, with in-app purchases available.
Is AVR Projects free?
AVR Projects is free to download, with in-app purchases available.
Do BlueGrays or AVR Projects have ads?
BlueGrays shows ads; AVR Projects does not.
Which is updated more often, BlueGrays or AVR Projects?
BlueGrays ships an update every 6 days, and AVR Projects daily. Most recently, BlueGrays was updated on September 17, 2026 and AVR Projects on September 26, 2026.

Other comparisons