Comparison

Workshop for Raspberry Pi vs 555 Timer & Oscillators Guide

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

Head to head
About

Workshop for Raspberry Pi

Explore a variety of demo projects for Raspberry Pi, covering displays, sensors, home automation, and IoT. Ideal for makers, electronics enthusiasts, and engineering students looking to learn and experiment with hardware.

Highlights
  • Display projects (LCM, OLED, TFT)
  • Sensor projects (temperature, humidity)
  • Home automation (WiFi, Bluetooth, LoRa)
  • IoT projects (post sensor data)
  • Collection of demo projects
  • Suitable for makers and students
Features
Read full description

This app is a collection of rich demo projects for makers, electronics enthusiast, or engineering students using Raspberry Pi development board Features 1. Display projects • Character LCM 16x2, 20x4 • I2C OLED 96x64 • SPI OLED 96x64 • TFT 176x220 2. Sensors Projects • DHT11 (temperature and humidity) • 18B20 (1-wire temperature sensor) 3. Automation projects • Home automation using Wifi • Home automation using Bluetooth • Home automation using BluetoothLE • Home automation using LoRa 4. Internet-of-Things IoT Projects • Post sensor data to Iot Thingspeak website More projects will be added soon ! Raspberry Pi is a trademark of Raspberry Pi foundation. "Python" and the Python logos are trademarks or registered trademarks of the Python Software Foundation. All other trade names mentioned in this app or the other documentation provided by this app are trademarks or registered trademarks of their respective holder. This app is not related or affiliated in any way these companies.

About

555 Timer & Oscillators Guide

Features
Read full description

Master the design of oscillators and waveform generators using 555 timer integrated circuits, digital logic integrated circuits, operational amplifiers, and transistors. The application provides a comprehensive collection of over 130 tutorials and circuit diagrams, covering 555 timer circuits and practical applications, CMOS 4000 series logic oscillators, TTL 74LS and 74HC series oscillators, operational amplifier–based waveform generators, and transistor multivibrators. Designed for electronics beginners, students, hobbyists, and professional engineers, the app serves as a complete reference and learning tool for designing, understanding, and building oscillators, multivibrators, pulse generators, and waveform circuits commonly used in both analog and digital electronics. In addition to tutorials and schematics, the app includes built-in calculators for frequency, timing, duty cycle, and component value estimation, helping users quickly calculate and adjust circuit parameters. All topics are presented with clear circuit diagrams and detailed explanations. 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! Covered Topics: • 555 Timer IC Series • Astable, monostable, and bistable modes • Pulse Width Modulation (PWM) • Voltage conversion circuits • Sensor and external module interfacing • CMOS Logic Oscillators • CMOS 4000 series circuits • Astable, monostable, and bistable modes • Gated CMOS oscillators • TTL / HC Logic Oscillators • TTL 74LS series circuits • 74HC series logic oscillators • Astable and monostable modes • Operational Amplifier Oscillators • Sine wave generators • Square-wave pulse generators • Triangle wave generators • Transistor-Based Oscillators • Transistor-Based Astable multivibrators • Transistor-Based Monostable multivibrators The content is regularly updated and expanded with each new release, ensuring the latest tutorials and circuit examples are always available.

Screenshots

Workshop for Raspberry Pi3 screens
555 Timer & Oscillators Guide4 screens

Verdict

The call

The clearest difference is in-app purchases: 555 Timer & Oscillators Guide at none against Workshop for Raspberry Pi's 10. 555 Timer & Oscillators Guide also leads on update cadence (every 5 months vs every 19 months). Workshop for Raspberry Pi's advantage is ads (none vs shown) and iOS requirement (13.0 vs 16.0). On price 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. Workshop for Raspberry Pi sells 10 one-off in-app purchases. 555 Timer & Oscillators Guide asks for nothing beyond the download.

UpkeepUpdate frequency

Workshop for Raspberry Pi ships an update every 19 months, 555 Timer & Oscillators Guide every 5 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 5 level
Workshop for Raspberry Pi versus 555 Timer & Oscillators Guide: the parameters behind the verdict, then further details
ParameterWorkshop for Raspberry Pi555 Timer & Oscillators Guide
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 19 monthsEvery 5 months — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size23 MB24 MB
Age rating4+4+
DeveloperSiu Yuen HoALG Software Lab

In-app purchases

10 purchases

Workshop for Raspberry Pi

One-time10
  • TFT 220x176$1.99
  • dht11 sensor$1.99
  • 18b20 sensor$1.99
Show 7 more
  • Rotary encoder$1.99
  • ADC ADS1115$1.99
  • Automation using browser$1.99
  • Automation using LoRa$1.99
  • Environment sensor IoT$3.99
  • Automation using bluetooth$3.99
  • Automation using bluetooth LE$3.99
None

555 Timer & Oscillators Guide

No in-app purchases

Questions

Is Workshop for Raspberry Pi free?
Workshop for Raspberry Pi is free to download, with in-app purchases available.
Is 555 Timer & Oscillators Guide free?
555 Timer & Oscillators Guide is free to download, with no in-app purchases.
Do Workshop for Raspberry Pi or 555 Timer & Oscillators Guide have ads?
555 Timer & Oscillators Guide shows ads; Workshop for Raspberry Pi does not.
Which is updated more often, Workshop for Raspberry Pi or 555 Timer & Oscillators Guide?
Workshop for Raspberry Pi ships an update every 19 months, and 555 Timer & Oscillators Guide every 5 months. Most recently, Workshop for Raspberry Pi was updated on October 5, 2026 and 555 Timer & Oscillators Guide on October 12, 2026.

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