Comparison

Operational Amplifiers Guide vs Nodes AI

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
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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

Nodes AI

Features
Read full description

Nodes is a visual AI creation tool for building image-generation workflows directly on iOS. Create node-based pipelines that turn simple ideas into generated images, edited designs, and creative outputs. Connect steps together, experiment with prompts, refine results, and build repeatable AI workflows from a clean, touch-first interface. Nodes is designed for creators who want more control than a single prompt box, without needing to manage complex desktop setups. Features include: Visual node-based AI workflows Prompt-to-image generation AI image editing workflows Modular pipeline-style creation Touch-friendly interface for iPhone and iPad Built for experimentation, iteration, and creative control Nodes is ideal for artists, designers, prototypers, and AI creators who want to explore workflow-based image generation on mobile.

Screenshots

Operational Amplifiers Guide4 screens
Nodes AI3 screens

Verdict

The call

The clearest difference is in-app purchases: Operational Amplifiers Guide at none against Nodes AI's 3. Operational Amplifiers Guide also leads on iOS requirement (16.0 vs 18.0). Nodes AI's advantage is ads (none vs shown). 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. Nodes AI sells 3 one-off in-app purchases. Operational Amplifiers Guide asks for nothing beyond the download.

Scorecard3 real differences · 3 level
Operational Amplifiers Guide versus Nodes AI: the parameters behind the verdict, then further details
ParameterOperational Amplifiers GuideNodes AI
PriceFreeFree
Update frequencyEvery 2 months—
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.0
Further details — not scored
Size17 MB8 MB
Age rating4+12+
DeveloperALG Software LabNikolaos Psarakis

In-app purchases

None

Operational Amplifiers Guide

No in-app purchases

3 purchases

Nodes AI

One-time3
  • 500 Tokens$1.99
  • 1000 Tokens$2.99
  • 5000 Tokens$7.99

Questions

Is Operational Amplifiers Guide free?
Operational Amplifiers Guide is free to download, with no in-app purchases.
Is Nodes AI free?
Nodes AI is free to download, with in-app purchases available.
Do Operational Amplifiers Guide or Nodes AI have ads?
Operational Amplifiers Guide shows ads; Nodes AI does not.

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