# Operational Amplifiers Guide — Op-Amp Calculator Toolkit

> Op-Amp Calculator Toolkit (iPhone/iPad app by ALG Software Lab.)

- Source: https://appshunter.io/ios/app/operational-amplifiers-guide/id6467499897 (this page in markdown: same URL + `.md`)
- Developer: [ALG Software Lab](https://appshunter.io/developer/1650561236)
- Category: Utilities, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 17 MB
- Languages: American English, French (France), German (Germany), Indonesian, Italian, Japanese, Polish, European Portuguese, Russian, Chinese (Simplified, China) and 4 more
- Released: 2023-09-23
- Data updated: 2026-08-23
- User reviews in markdown: https://appshunter.io/ios/app/operational-amplifiers-guide/id6467499897/reviews.md

## What is Operational Amplifiers Guide?

Operational Amplifiers Guide is your essential tool for designing and analyzing circuits using op-amps and comparators. Whether you're a student, electronics enthusiast, or experienced engineer, this app helps you create, calculate, and understand a wide variety of op-amp–based circuits with ease.

Use it as a practical reference when developing projects, building prototypes, or studying amplifier configurations. The app also includes technical data on popular operational amplifier and comparator series — making it a handy guide for both design and selection.

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!

Key Features:
 • Interactive calculators for common op-amp circuits
 • Step-by-step explanations and formulas
 • Reference info on op-amps and comparators
 • Ideal for learning, prototyping, or quick checks
 • Light and dark mode support

The application contains the following guides and calculators:

Amplifiers
 • Non-inverting operational amplifier
 • Inverting operational amplifier
 • Inverting amplifier with T-bridge in OS
 • Differential amplifier
 • Differential amplifier with T-bridge in OS 
 • Voltage repeater
 • Inverting voltage repeater
 • AC voltage amplifier 
 • High Input Impedance AC Voltage Amplifier 
 • AC voltage repeater

ActiveFilters
 • Non-inverting low-pass filter
 • Inverting low-pass filter
 • Non-inverting high-pass filter
 • Inverting high pass filter
 • Bandpass filter 
 • Gyrator

Integrators and differentiators
 • Voltage integrator
 • Sum integrator
 • Integrator with signal amplification
 • Difference integrator
 • Double integrator
 • Voltage differentiator
 • Sum Differentiator
 • Differentiator with T-bridge
 • Differentiator with T-bridge made of capacitors
 • Difference differentiator

Comparators
 • Comparator
 • Limiter
 • Limiter with zener diode at the input
 • RS trigger 

Attenuators
 • Non-inverting attenuator
 • Inverting attenuator

Converters
 • Voltage-to-current converter with non-inverting input
 • Voltage to current converter with inverting input
 • Voltage to current converter with differential input

Adders and substactors
 • Inverting adder
 • Addition-subtraction circuit
 • Non-inverting adder

Logarithmic and exponential amplifiers
 • Diode-based logarithmic amplifier
 • Transistor-based logarithmic amplifier
 • Diode exponential amplifier
 • Exponential transistor amplifier

Sine Wave generators:
 • Op-Amp Oscillators
 • Oscillator with Diode in the Feedback Path
 • Twin-T Network Signal Generator

Square-wave pulse generators
 • Op-Amp Square-Wave Generator
 • Adjustable Square-Wave Generator
 • Enhanced Square-Wave Generator
 • Duty-Cycle Adjustment

Triangle-wave signal generators
 • Nonlinear Triangle-Wave Generator
 • Variable-Symmetry Sawtooth Generator
 • Linear Triangle-Wave Generator
 • Adjustable Linear Triangle-Wave Generator
 • Variable-Symmetry Ramp Generator

Popular operational amplifiers: description and pinout
Popular comparators: description and pinout

Download now and power up your electronics work!


## Version history (last 5 releases)

### 3.3 — 2026-08-18

Updated content and libraries.

### 3.2 — 2026-03-06

We’ve expanded our content with 3 new languages!
The app is now available in 14 languages:
• English,
• French,
• German,
• Indonesian,
• Italian,
• Japanese,
• Polish,
• Portuguese,
• Russian,
• Simplified Chinese,
• Spanish,
• Turkish,
• Ukrainian,
• Vietnamese
— making it more accessible than ever.

### 3.1 — 2026-02-16

Updated content and libraries with improvements and fixes.

### 3.0 — 2025-12-21

Updated content and libraries. Added new themes and circuits:
 • Sine Wave Generators,
 • Square-wave pulse generators,
 • Triangle-wave signal generators.

### 2.0 — 2025-07-26

Updated content and libraries.

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All apps by ALG Software Lab: https://appshunter.io/developer/1650561236

## Related topics

[operational amplifiers guide](https://appshunter.io/ios/topics/operational-amplifiers-guide) · [operational amplifiers pro](https://appshunter.io/ios/topics/operational-amplifiers-pro)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*