Comparison

Karel1981 vs Arduino Programming Tutorial

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

Head to head
About

Karel1981

Learn programming with a beginner-friendly language inspired by a robot. This educational tool introduces fundamental coding concepts through interactive exercises, making it ideal for those new to computer science.

Highlights
  • Beginner-friendly programming language
  • Introduces fundamental coding concepts
  • Interactive learning exercises
  • Based on Karel The Robot book
  • Ideal for computer science novices
Features
Read full description

Karel is an educational programming language for beginners, created by Richard E.Pattis in his book Karel The Robot: A Gentle Introduction to the Art of Programming. Pattis used the language in his courses at Stanford University, California. The language is named after Karel Čapek, a Czech writer who introduced the word robot.

About

Arduino Programming Tutorial

Learn Arduino programming with over 200 lessons, circuit diagrams, and code examples. Covers electronics, components, and C++ essentials for beginners and advanced users. Available in 14 languages.

Highlights
  • 200+ practical lessons
  • Circuit diagrams and wiring guides
  • Ready-to-use code examples
  • Interactive quiz questions
  • Covers 14 languages
  • Detailed component explanations
  • C++ programming essentials
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 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.

Screenshots

Karel19813 screens
Arduino Programming Tutorial4 screens

Verdict

The call

The clearest difference is ads: Karel1981 at none against Arduino Programming Tutorial's shown. Karel1981 also leads on review sentiment (67% vs 45%) and monetization model (free vs ad-supported). Arduino Programming Tutorial's advantage is update cadence (every 6 weeks vs every 5 months). 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Karel1981 ships an update every 5 months, Arduino Programming Tutorial every 6 weeks. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

Scorecard5 real differences · 5 level
Karel1981 versus Arduino Programming Tutorial: the parameters behind the verdict, then further details
ParameterKarel1981Arduino Programming Tutorial
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews66.7% of reviews — better45.5% of reviews
Number of ratings2 — better—
Update frequencyEvery 5 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better16.0
Further details — not scored
Size65 MB44 MB
Age rating4+4+
DeveloperIHPCI.org, z.s.ALG Software Lab

Customer experience

Karel1981

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Arduino Programming Tutorial

Written reviews22 reviews
Positive45.5%
Neutral18.2%
Negative36.4%

In-app purchases

None

Karel1981

No in-app purchases

None

Arduino Programming Tutorial

No in-app purchases

Questions

Is Karel1981 free?
Karel1981 is free to download, with no in-app purchases.
Is Arduino Programming Tutorial free?
Arduino Programming Tutorial is free to download, with no in-app purchases.
Do Karel1981 or Arduino Programming Tutorial have ads?
Arduino Programming Tutorial shows ads; Karel1981 does not.
Which is updated more often, Karel1981 or Arduino Programming Tutorial?
Karel1981 ships an update every 5 months, and Arduino Programming Tutorial every 6 weeks. Most recently, Karel1981 was updated on October 2, 2026 and Arduino Programming Tutorial on October 12, 2026.

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