# Operational Amplifiers Pro vs PID Controller Simulation

The clearest difference is rating: Operational Amplifiers Pro at 5.0 against PID Controller Simulation's 3.0. PID Controller Simulation's advantage is price ($3.99 vs $4.99) and iOS requirement (13.0 vs 16.0). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Operational Amplifiers Pro costs $4.99 and PID Controller Simulation $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Operational Amplifiers Pro holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Operational Amplifiers Pro ships an update every 2 months, PID Controller Simulation every 3 months. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Operational Amplifiers Pro | PID Controller Simulation |
| --- | --- | --- |
| Price | $4.99 | **$3.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/pid-controller-simulation/id6612009107/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | Paid |
| Size | 14 MB | 6 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [立娜 王](https://appshunter.io/developer/1761096632) |

## What reviewers say

### Operational Amplifiers Pro

[App page](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953)

This app provides interactive calculators and reference information for designing and analyzing op-amp circuits. It offers step-by-step explanations and technical data on popular op-amp series, aiding students and engineers in circuit development and prototyping.

**Highlights:** Interactive op-amp circuit calculators, Step-by-step explanations and formulas, Reference data on op-amps and comparators, Support for 14 languages, Light and dark mode, Advanced calculators and circuit guides (Pro), Full-text search (Pro)

**Features:** Vision Pro support

**In-app purchases:** none


### PID Controller Simulation

[App page](https://appshunter.io/ios/app/pid-controller-simulation/id6612009107)

Master PID control theory and practice with this comprehensive simulation platform. Learn fundamental concepts, tune parameters, and simulate real-world applications like temperature and motor speed control. Export PID parameters as production-ready code in multiple languages.

**Highlights:** Comprehensive tutorial system, Interactive scenario simulations, Performance analysis tools, Code generator for multiple languages, Real-time curve visualization, Advanced PID algorithm explanations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Operational Amplifiers Pro free?

Operational Amplifiers Pro costs $4.99, with no in-app purchases.

### Is PID Controller Simulation free?

PID Controller Simulation costs $3.99, with no in-app purchases.

### Which has better reviews, Operational Amplifiers Pro or PID Controller Simulation?

Operational Amplifiers Pro is rated higher. Operational Amplifiers Pro averages 5.0 out of 5 from 1 ratings, while PID Controller Simulation averages 3.0 from 2 ratings.

### Do Operational Amplifiers Pro or PID Controller Simulation have ads?

Neither Operational Amplifiers Pro nor PID Controller Simulation shows ads.

### Which is updated more often, Operational Amplifiers Pro or PID Controller Simulation?

Operational Amplifiers Pro ships an update every 2 months, and PID Controller Simulation every 3 months. Most recently, Operational Amplifiers Pro was updated on September 16, 2026 and PID Controller Simulation on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*