Comparison

Operational Amplifiers Guide vs Circuit Simulator Q

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

Head to head
About

Operational Amplifiers Guide

Features
Read full description

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!

About

Circuit Simulator Q

Design and simulate complex digital logic circuits with an intuitive interface. Explore basic gates, build counters, ALUs, and even create your own processors. This tool brings your digital electronics ideas to life.

Highlights
  • Advanced circuit design
  • Qnet netlist algorithm
  • Build counter circuits and flip-flops
  • Construct Arithmetic Logic Units (ALUs)
  • Design custom processors
Features
Read full description

Welcome to Circuit Simulator Q! Unleash your creativity and dive into the world of digital circuit design! With Circuit Simulator Q, you can design and simulate logic circuits ranging from the simplest to the most complex designs. Our intuitive interface allows you to bring your ideas to life effortlessly. Key Features: Advanced Circuit Design: Create intricate logic circuits, from basic gates to complex architectures, all at your fingertips. Qnet Algorithm: Experience the power of our superior netlist algorithm, Qnet. Capable of handling the most complex circuits and branches, Qnet ensures seamless netlist generation while being resilient to loops. Build Countable Circuits: Design your own counter circuits and flip-flops, exploring the fundamentals of digital electronics. Arithmetic Logic Units: Construct arithmetic logic units (ALUs) that enable you to perform various calculations and operations. Create Your Own Processor: Push the boundaries of your imagination by designing your very own processors, integrating logic components like never before. Join a community of innovators and transform your ideas into reality with Circuit Simulator Q! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Operational Amplifiers Guide4 screens
Circuit Simulator Q4 screens

Verdict

The call

The clearest difference is in-app purchases: Operational Amplifiers Guide at none against Circuit Simulator Q's 2. Circuit Simulator Q's advantage is ads (none vs shown) and update cadence (every 2 days vs every 2 months). 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. Circuit Simulator Q sells 2 in-app purchases, starting at $4.99 per 7 days. Operational Amplifiers Guide asks for nothing beyond the download.

UpkeepUpdate frequency

Operational Amplifiers Guide ships an update every 2 months, Circuit Simulator Q every 2 days. Both last shipped on September 19, 2026.

Scorecard4 real differences · 6 level
Operational Amplifiers Guide versus Circuit Simulator Q: the parameters behind the verdict, then further details
ParameterOperational Amplifiers GuideCircuit Simulator Q
PriceFreeFree
Rating—2.7 (3 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 2 monthsEvery 2 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size17 MB190 MB
Age rating4+4+
DeveloperALG Software LabAli Mert TUFEKCI

In-app purchases

None

Operational Amplifiers Guide

No in-app purchases

2 purchases

Circuit Simulator Q

Subscriptions2
  • Weekly Plan$4.997 Days
  • Yearly Plan$29.991 Year

Questions

Is Operational Amplifiers Guide free?
Operational Amplifiers Guide is free to download, with no in-app purchases.
Is Circuit Simulator Q free?
Circuit Simulator Q is free to download, with in-app purchases available.
Do Operational Amplifiers Guide or Circuit Simulator Q have ads?
Operational Amplifiers Guide shows ads; Circuit Simulator Q does not.
Which is updated more often, Operational Amplifiers Guide or Circuit Simulator Q?
Operational Amplifiers Guide ships an update every 2 months, and Circuit Simulator Q every 2 days. Most recently, Operational Amplifiers Guide was updated on September 19, 2026 and Circuit Simulator Q on September 19, 2026.

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