# BrainHack vs Operational Amplifiers Pro

The clearest difference is price: BrainHack at Free against Operational Amplifiers Pro's $4.99. BrainHack also leads on ratings volume (6 vs 1) and iOS requirement (8.0 vs 17.0). Operational Amplifiers Pro's advantage is rating (5.0 vs 4.2). On update cadence, ads, in-app purchases and device support there is nothing between them.

BrainHack is free to download; Operational Amplifiers Pro costs $4.99 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 4.2. That said, the two scores are not equally well evidenced: BrainHack has 6 ratings behind it against 1, so its average is the more settled of the two.

BrainHack ships an update every 6 weeks, Operational Amplifiers Pro every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BrainHack | Operational Amplifiers Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.2 (6 ratings)](https://appshunter.io/ios/app/brainhack/id959976921/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 11 MB | 14 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Katsuma Tanaka](https://appshunter.io/developer/507370114) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### BrainHack

[App page](https://appshunter.io/ios/app/brainhack/id959976921)

This app serves as an interpreter for the esoteric B*******k programming language. It allows users to execute B*******k code, which is known for its extreme minimalism and is designed for programmer challenge and amusement rather than practical use.

**Highlights:** B*******k programming language interpreter, Execute esoteric code, Minimalist programming language support, ASCII character output, Byte input and manipulation

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is BrainHack free?

BrainHack is free to download, with no in-app purchases.

### Is Operational Amplifiers Pro free?

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

### Which has better reviews, BrainHack or Operational Amplifiers Pro?

Operational Amplifiers Pro is rated higher. BrainHack averages 4.2 out of 5 from 6 ratings, while Operational Amplifiers Pro averages 5.0 from 1 ratings.

### Do BrainHack or Operational Amplifiers Pro have ads?

Neither BrainHack nor Operational Amplifiers Pro shows ads.

### Which is updated more often, BrainHack or Operational Amplifiers Pro?

BrainHack ships an update every 6 weeks, and Operational Amplifiers Pro every 2 months. Most recently, BrainHack was updated on November 1, 2026 and Operational Amplifiers Pro on November 3, 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.*