555 Timer & Oscillators Guide vs EDoctronics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
EDoctronics
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EDoctronics es la app de referencia para estudiantes y profesores de electrónica. Calcula, simula y aprende con herramientas interactivas diseñadas para todos los niveles. MÓDULOS INCLUIDOS Ley de Ohm Calcula voltaje, corriente, resistencia y potencia. Visualiza la fórmula paso a paso con sustitución de valores reales. Código de colores de resistencias Decodifica resistencias de 4, 5 y 6 bandas. Visualización del cuerpo de la resistencia con colores reales y rango de tolerancia. Display de 7 segmentos Simulador interactivo con modo manual, por dígito y animación automática. Incluye tabla de verdad completa para ánodo y cátodo común. Compuertas lógicas Simula AND, OR, NOT, NAND, NOR, XOR y XNOR. Diagrama visual con señales en tiempo real y tabla de verdad interactiva. Calculadora LED Calcula la resistencia limitadora de corriente para cualquier LED. Muestra la resistencia estándar E24 más cercana y la potencia disipada. SI Unidades del Sistema Internacional Convierte entre prefijos SI para las principales magnitudes eléctricas: voltaje, corriente, resistencia, capacitancia, inductancia, frecuencia y potencia. DISEÑO PENSADO PARA APRENDER - Fórmulas con sustitución de valores reales - Explicaciones en español claro - Resultados al instante sin conexión a internet - Interfaz técnica tipo plano de ingeniería EDoctronics funciona completamente sin conexión. Ideal en el taller, el laboratorio o el salón de clase.
Screenshots
Verdict
The clearest difference is update cadence: EDoctronics at every 3 weeks against 555 Timer & Oscillators Guide's every 5 months. 555 Timer & Oscillators Guide's advantage is iOS requirement (16.0 vs 18.6). On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
555 Timer & Oscillators Guide ships an update every 5 months, EDoctronics every 3 weeks. The most recent releases landed on September 24, 2026 and September 10, 2026 respectively.
| Parameter | 555 Timer & Oscillators Guide | EDoctronics |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 24 MB | 5 MB |
| Age rating | +4 | 4+ |
| Developer | ALG Software Lab | Jonathan Abimael Cruz Orozco |
In-app purchases
555 Timer & Oscillators Guide
No in-app purchases
EDoctronics
No in-app purchases
Questions
Is 555 Timer & Oscillators Guide free?
Is EDoctronics free?
Do 555 Timer & Oscillators Guide or EDoctronics have ads?
Which is updated more often, 555 Timer & Oscillators Guide or EDoctronics?
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