Learn About Electronics vs 555 Timer & Oscillators Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Learn About Electronics
This educational app helps users memorize and identify electronic components through study modes and quizzes. It features audio pronunciation in English and progress tracking for each chapter. Users can bookmark flashcards and quiz questions for focused learning.
- Audio pronunciation of components
- Study mode
- Quiz mode
- Bookmarking flashcards and questions
- Progress indicators
- Text-to-speech functionality
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This app is a great resource to memorize Electronic Components. The app is engineered to make users perfect identifying famous electronic components by studying for a very short amount of time. Audio functionality and bookmarking is available throughout the app on chapter, section, study mode and quiz modes. The app will help you learn the correct pronunciation of Electronic Components using English language. Following are the main features of this app 1. Supports pronouncing Electronic Components in English Language 2. Uses Text to Speech Engine for Audio Functionality 3. Quizzes 4. Study Mode 5. Bookmarking Study Flashcards and Quiz Questions 6. Progress Indicators for Every Chapter 7. Visualization for Overall Progress Currently following Electronic Components are supported Wires Connected Wires Unconnected Wires Input Bus Line Output Bus Line Terminal Bus Line Push Button (Normally Open) Push Button (Normally Closed) SPST Switch SPDT Switch DPST Switch DPDT Switch Relay Switch AC Supply DC Supply Constant Current Source Controlled Current Source Controlled Voltage Source Single Cell Battery Multi Cell Battery Sinusoidal Generator Pulse Generator Triangular Wave Ground Signal Ground Chassis Ground Fixed Resistor Rheostat Preset Thermistor Varistor Magneto Resistor LDR Tapped resistor Attenuator Memristor Non Polarized Capacitor Polarized Capacitor Electrolytic Capacitor Feed through Capacitor Variable Capacitor Iron Core Inductor Ferrite Core Inductors Center Tapped Inductors Variable Inductors Pn Junction Diode Zener Diode Photodiode Led Varactor Diode Shockley Diode Schottky Diode Tunnel Diode Thyristor Constant Current Diode Laser Diode NPN PNP N- Channel JFET P-Channel JFET Enhancement MOSFET Depletion MOSFET Phototransistor Photo Darlington Darlington Transistor And Gate Or Gate Nand Gate Nor Gate Not Gate Exor Exnor Buffer Tri-State Buffer Flip Flop Basic Amplifier Operational Amplifier Antenna Loop Antenna Dipole Antenna Transformer Iron Core Center Tapped Step Up Transformer Step Down Transformer Buzzer Loud Speaker Light Bulb Motor Fuse Crystal Oscillator ADC DAC Thermocouple
555 Timer & Oscillators Guide
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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
Verdict
The clearest difference is in-app purchases: 555 Timer & Oscillators Guide at none against Learn About Electronics's 1. Learn About Electronics's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 5 months). On price, device support and iOS requirement 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
Both are free to download. Learn About Electronics sells 1 one-off in-app purchase. 555 Timer & Oscillators Guide asks for nothing beyond the download.
Learn About Electronics ships an update every 3 weeks, 555 Timer & Oscillators Guide every 5 months. The most recent releases landed on June 1, 2026 and September 24, 2026 respectively.
| Parameter | Learn About Electronics | 555 Timer & Oscillators Guide |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks — better | Every 5 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 28 MB | 24 MB |
| Age rating | 4+ | +4 |
| Developer | Ghumman Tech LLC | ALG Software Lab |
In-app purchases
Learn About Electronics
- Remove Ads$9.99
555 Timer & Oscillators Guide
No in-app purchases





