# Derome Proffsapp vs Brainy Builder

The clearest difference is in-app purchases: Derome Proffsapp at none against Brainy Builder's 3. Derome Proffsapp also leads on iOS requirement (13.0 vs 15.0). Brainy Builder's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Brainy Builder sells 3 in-app purchases, starting at $0.99 per month. Derome Proffsapp asks for nothing beyond the download.

Derome Proffsapp ships an update every 2 months, Brainy Builder every 3 weeks. The most recent releases landed on October 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Derome Proffsapp | Brainy Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/brainy-builder-pro-calculator/id1539913001/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 34 MB | 49 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Struqtur AB](https://appshunter.io/developer/590357651) | [Beyond Code AB](https://appshunter.io/developer/1539913003) |

## What reviewers say

### Derome Proffsapp

[App page](https://appshunter.io/ios/app/derome-proffsapp/id1447629618)

**In-app purchases:** none


### Brainy Builder

[App page](https://appshunter.io/ios/app/brainy-builder-pro-calculator/id1539913001)

This app offers a suite of tools for carpenters, simplifying complex calculations for measurements, spacing, and project planning. It supports both metric and imperial units, with free and expanded pro versions available.

**Highlights:** Metric and Imperial unit support, 8 free carpentry calculators, Equal spacing calculation, Parquet floor planning, Stair stringer calculation, Rafter calculations, Live drawing functionality

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| All formulas | Free | one-time |
| Pro | $11.99 | one-time |


## Frequently asked questions

### Is Derome Proffsapp free?

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

### Is Brainy Builder free?

Brainy Builder is free to download, with in-app purchases available.

### Do Derome Proffsapp or Brainy Builder have ads?

Neither Derome Proffsapp nor Brainy Builder shows ads.

### Which is updated more often, Derome Proffsapp or Brainy Builder?

Derome Proffsapp ships an update every 2 months, and Brainy Builder every 3 weeks. Most recently, Derome Proffsapp was updated on October 3, 2026 and Brainy Builder on October 24, 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.*