Comparison

AVR Tutorial Pro vs Richtig

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

Head to head
About

AVR Tutorial Pro

Features
Read full description

This app is a AVR tutorial based on ATMEGA16 C language. It is suitable for hobbyist or engineering students. Learning AVR mcu is difficult. The learning curve is steep. The process including reading datasheet, writing code, building prototypes and troubleshooting. The most possible errors are the setting wrong value of registers. Now, AVR tutorial Pro is the solution. The code wizard allow you to set the timer, UART, ADC, interrupt and peripherals by just a few clicks in setting. The proven C source code is generated automatically. Though the code wizard is based on ATMEGA16 mcu, it is easy to port to other ATMEGA mcu since the source code is highly structured Features • AVR architecture review • AVR asm mnemonics & C language • 21 demo projects including LED, buzzer, key switch, lcm16x2, ADC, etc • Code wizard for UART, timer, interrupt, ADC and external peripherals Features in PRO only • Support I2C eeprom 24C01 (128B) ~ 24C512 (64kB) • Support SPI eeprom 25010 (128B) ~ 25M02 (256kB) • Extra demo projects including led matrix 16x16, I2C eeprom, SPI eeprom • Code wizard for I2C eeprom, SPI eeprom, LCM128x64, etc Atmel® and AVR® are registered trademarks or trademarks of Atmel Corporation or its subsidiaries, in the US and/or other countries. This application is not related or affiliated in any way Atmel Corporation.

About

Richtig

Features
Read full description

IMPROVE YOUR GERMAN SPELLING WITH CONFIDENCE The RICHTIG-SCHREIBEN APP helps you master German spelling through interactive exercises, audio dictation, and proven learning techniques. Practice the most common spelling mistakes, expand your vocabulary, and improve your written German. Perfect for school, work, exams, and learners of German as a foreign language. Train with more than 2,000 COMMON GERMAN SPELLING MISTAKES collected from school dictations, exams, and professional proofreading. Every word is spoken aloud, written by the learner, and presented in meaningful quotes or proverbs. This combination strengthens spelling, vocabulary, concentration, and long-term memory. FEATURES • More than 2,000 German spelling exercises • Listen, write, and remember words more effectively • Audio pronunciation for every exercise • Learn with inspiring quotes and proverbs • Educational learning method for lasting improvement • Personal learning statistics to track your progress • Custom review lists for difficult words • Up to three user profiles • Adjustable difficulty levels for every learner • Free access to all difficulty levels in the first lesson PERFECT FOR • Students from elementary school to high school • Learners of German as a foreign language from A1 to C1 • Professionals who want to improve their written German • Adults who want to refresh their spelling skills WHY CHOOSE THE RICHTIG-SCHREIBEN APP? Instead of simply memorizing words, you actively listen, write, and understand them in context. Quotes and proverbs make learning more engaging while strengthening memory and language skills. This helps you remember the correct spelling for the long term. Whether you are preparing for exams, improving your German writing, expanding your vocabulary, or simply looking to avoid spelling mistakes, the Richtig-Schreiben App provides an effective and enjoyable way to practice. DOWNLOAD NOW AND IMPROVE YOUR GERMAN SPELLING EVERY DAY. More information about the Richtig-Schreiben App at www.schreiben-rechnen.de Privacy Policy: https://www.schreiben-rechnen.de/datenschutz Terms & Conditions: https://www.schreiben-rechnen.de/agb Usage Conditions: https://www.schreiben-rechnen.de/nutzungsbedingungen

Screenshots

AVR Tutorial Pro4 screens
Richtig4 screens

Verdict

The call

The clearest difference is price: Richtig at Free against AVR Tutorial Pro's $1.99. Richtig also leads on update cadence (every 3 weeks vs every 4 months). AVR Tutorial Pro's advantage is ads (none vs shown) and iOS requirement (9.0 vs 15). On 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

Richtig is free to download; AVR Tutorial Pro costs $1.99 up front. AVR Tutorial Pro sells 10 one-off in-app purchases and Richtig sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AVR Tutorial Pro ships an update every 4 months, Richtig every 3 weeks. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 2 level
AVR Tutorial Pro versus Richtig: the parameters behind the verdict, then further details
ParameterAVR Tutorial ProRichtig
Price$1.99Free — better
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15
Further details — not scored
Size33 MB122 MB
Age rating4+4+
DeveloperSiu Yuen HoInstitut Dr. Ehrlich e.K.

In-app purchases

10 purchases

AVR Tutorial Pro

One-time10
  • SPI OLED$1.99
  • Wifi home automation$1.99
  • I2C OLED$1.99
Show 7 more
  • 2.2" TFT$1.99
  • Lora home automation$1.99
  • gps project$2.99
  • Home automation using Siri$2.99
  • Home automation using Google$2.99
  • BT home automation$4.99
  • BLE home automation$4.99
2 purchases

Richtig

Subscriptions2
  • Pro Version (monthly)$1.991 Month
  • Pro Version (annually)$12.991 Year

Questions

Is AVR Tutorial Pro free?
AVR Tutorial Pro costs $1.99, and also offers in-app purchases.
Is Richtig free?
Richtig is free to download, with in-app purchases available.
Do AVR Tutorial Pro or Richtig have ads?
Richtig shows ads; AVR Tutorial Pro does not.
Which is updated more often, AVR Tutorial Pro or Richtig?
AVR Tutorial Pro ships an update every 4 months, and Richtig every 3 weeks. Most recently, AVR Tutorial Pro was updated on October 10, 2026 and Richtig on October 25, 2026.

Other comparisons