# BrainHack vs ThetaCalc

The clearest difference is update cadence: BrainHack at every 6 weeks against ThetaCalc's every 3 months. BrainHack also leads on iOS requirement (8.0 vs 17.6). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.2 for BrainHack against 4.3 for ThetaCalc. Both are backed by a comparable volume of ratings — 6 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

BrainHack ships an update every 6 weeks, ThetaCalc every 3 months. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | BrainHack | ThetaCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (6 ratings)](https://appshunter.io/ios/app/brainhack/id959976921/reviews) | **[4.3 (4 ratings)](https://appshunter.io/ios/app/thetacalc/id1521614636/reviews)** |
| Number of ratings | **6** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 11 MB | 1 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Katsuma Tanaka](https://appshunter.io/developer/507370114) | [Felix Stehli](https://appshunter.io/developer/1521614638) |

## 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


### ThetaCalc

[App page](https://appshunter.io/ios/app/thetacalc/id1521614636)

This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.

**Highlights:** Reverse Polish Notation (RPN) calculator, User-programmable functions, JavaScript equation support, Extensible functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BrainHack free?

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

### Is ThetaCalc free?

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

### Which has better reviews, BrainHack or ThetaCalc?

ThetaCalc is rated higher. BrainHack averages 4.2 out of 5 from 6 ratings, while ThetaCalc averages 4.3 from 4 ratings.

### Do BrainHack or ThetaCalc have ads?

Neither BrainHack nor ThetaCalc shows ads.

### Which is updated more often, BrainHack or ThetaCalc?

BrainHack ships an update every 6 weeks, and ThetaCalc every 3 months. Most recently, BrainHack was updated on October 15, 2026 and ThetaCalc on October 1, 2026.

---

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