Opamp tools vs EDoctronics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Opamp tools
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This app is the collection of operational amplifier calculators. It is suitable for hobbyist or electronic engineer. Features * Inverting amplifier * Non-Inverting amplifier * Differential amplifier * Summing amplifier * Inverting comparator * First-order filter * Second-order filter (HPF) * Phase shift oscillator * Colpitts oscillator * Limit 5 combinations of component values * Share CSV via AirDrop * Upload CSV to iCloud Drive (For iOS8 or later) Pro Features * Instrumentation amplifier * Non-inverting comparator * Second-order filter (LPF) * Wien bridege oscillator * Hartley oscillator * No limitation of the number of suggestions * Selectable 1%,5%,10%,20% of values
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 in-app purchases: EDoctronics at none against Opamp tools's 1. EDoctronics also leads on update cadence (every 3 weeks vs every 12 months). Opamp tools's advantage is ads (none vs shown) and device support (3 vs 1). On price 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. Opamp tools sells 1 one-off in-app purchase. EDoctronics asks for nothing beyond the download.
Opamp tools ships an update every 12 months, EDoctronics every 3 weeks. The most recent releases landed on May 16, 2026 and September 10, 2026 respectively.
| Parameter | Opamp tools | EDoctronics |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 12 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 4 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Jonathan Abimael Cruz Orozco |
In-app purchases
Opamp tools
- Unlock pro feature$1.99
EDoctronics
No in-app purchases
Questions
Is Opamp tools free?
Is EDoctronics free?
Do Opamp tools or EDoctronics have ads?
Which is updated more often, Opamp tools or EDoctronics?
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