AVR Tutorial vs K4 Control for Elecraft K4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AVR Tutorial
This app simplifies learning AVR microcontrollers with a code wizard that generates C source code for various peripherals. It offers demo projects and an architecture review, making complex MCU programming more accessible for hobbyists and students.
- AVR architecture review
- AVR assembly and C language
- 21 demo projects
- Code wizard for peripherals
- Portability to other ATMEGA MCUs
- I2C and SPI EEPROM support (PRO)
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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 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.
K4 Control for Elecraft K4
Control your Elecraft K4 transceiver remotely from your iPad. Operate locally or over the internet, with integrated digital modes, logging, and advanced visual features.
- Full remote transceiver control
- Integrated digital modes (FT8, FT4, CW, SSTV)
- Comprehensive logbook with ADIF support
- Dual VFO and waterfall displays
- DX-Cluster integration and alerts
- Visual band mapping and callsign data
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K4 Control for Elecraft K4 is an innovative Software Defined Radio (SDR) client designed specifically for iPad users, allowing comprehensive control and operation of the Elecraft K4 transceiver. Developed to maximize the capabilities of the K4, this app is your gateway to operating your transceiver seamlessly, both locally and remotely via the internet. KEY FEATURES ■ Full Control Anywhere: Operate your K4 transceiver locally at home or from anywhere in the world with an internet connection. ■ Integrated Digital Modes: Use built-in tools for FT8, FT4, CW, Weather FAX and SSTV (NEW!) without the need for external software. ■ Logging: Maintain a comprehensive logbook with automatic logging, ADIF import/export. ■ Dual VFO and Waterfalls: Manage dual VFO settings and view real-time dual waterfall displays for detailed frequency insights (dependent on transceiver capabilities). ■ DX-Cluster and Alerts: Stay updated with DX-Cluster integration and personalized alerts for desired callsigns, DXCCs, States or others. ■ Visual and Interactive Features: View radio spots in the waterfall display, check band limits, and see callsigns on a map complete with directional data. ■ CW Operation: Offers unique CW capabilities including remote CW transmission via keyboard or a hardware paddle connected via CTR2/MIDI Controller. WHAT YOU NEED: - An Elecraft K4 Transceiver - The Transceiver needs to be connected to your local Network - No USB cable needed or supported - An iPad which runs at least iOS 18 LEARN MORE: Discover all features here: https://ham-radio-apps.com Access the full Manual: https://ham-radio-apps.com/manuals Note: K4-Control for Elecraft is independently developed and is not affiliated with or endorsed by Elecraft.
Screenshots
Verdict
The clearest difference is price: AVR Tutorial at Free against K4 Control for Elecraft K4's $89.99. AVR Tutorial also leads on rating (5.0 vs 4.8) and iOS requirement (9.0 vs 17.6). K4 Control for Elecraft K4's advantage is in-app purchases (none vs 10) and update cadence (every 2 weeks vs every 3 months). On 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
AVR Tutorial is free to download; K4 Control for Elecraft K4 costs $89.99 up front. AVR Tutorial sells 10 one-off in-app purchases. K4 Control for Elecraft K4 asks for nothing beyond the download.
AVR Tutorial holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews complicate that: 75% of AVR Tutorial's written reviews are positive against 100% of K4 Control for Elecraft K4's, so the app with the better star average is not the one people write more warmly about.
AVR Tutorial ships an update every 3 months, K4 Control for Elecraft K4 every 2 weeks. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.
| Parameter | AVR Tutorial | K4 Control for Elecraft K4 |
|---|---|---|
| Price | Free — better | $89.99 |
| Rating | 5.0 (2 ratings) — better | 4.8 (5 ratings) |
| Positive reviews | 75.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 33 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Marcus Roskosch |
Customer experience
AVR Tutorial
K4 Control for Elecraft K4
In-app purchases
AVR Tutorial
- Unlock PRO feature$1.99
- SPI OLED$1.99
- I2C OLED$1.99
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- Wifi home automation$1.99
- 2.2" TFT$1.99
- LoRa home automation$1.99
- Home automation using Siri$2.99
- Home automation using Google$2.99
- BT home automation$4.99
- BLE home automation$4.99
K4 Control for Elecraft K4
No in-app purchases
Questions
Is AVR Tutorial free?
Is K4 Control for Elecraft K4 free?
Which has better reviews, AVR Tutorial or K4 Control for Elecraft K4?
Do AVR Tutorial or K4 Control for Elecraft K4 have ads?
Which is updated more often, AVR Tutorial or K4 Control for Elecraft K4?
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