# Timber Engineering Calculator vs Voltage Drop Pro

The clearest difference is update cadence: Voltage Drop Pro at every 2 months against Timber Engineering Calculator's every 39 months. On price, ads, in-app purchases and device support there is nothing between them.

Timber Engineering Calculator costs $3.99 and Voltage Drop Pro $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Timber Engineering Calculator ships an update every 39 months, Voltage Drop Pro every 2 months. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Timber Engineering Calculator | Voltage Drop Pro |
| --- | --- | --- |
| Price | $3.99 | $3.99 |
| Rating | **[3.9 (7 ratings)](https://appshunter.io/ios/app/timber-engineering-calculator/id646321927/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 35 MB | 15 MB |
| Requires iOS | **16.0** | 17.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) |

## What reviewers say

### Timber Engineering Calculator

[App page](https://appshunter.io/ios/app/timber-engineering-calculator/id646321927)

This app provides 55 calculators for various timber and civil engineering parameters, covering beam properties, stress calculations, column design, and connector loads. It supports both metric (SI) and imperial (USCS) units for comprehensive engineering analysis.

**Highlights:** 55 engineering calculators, Timber and civil engineering parameters, Beam properties calculations, Stress and load analysis, Column design tools, Connector load calculations, Metric and imperial units

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

**In-app purchases:** none


### Voltage Drop Pro

[App page](https://appshunter.io/ios/app/voltage-drop-pro/id1601052433)

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

**In-app purchases:** none


## Frequently asked questions

### Is Timber Engineering Calculator free?

Timber Engineering Calculator costs $3.99, with no in-app purchases.

### Is Voltage Drop Pro free?

Voltage Drop Pro costs $3.99, with no in-app purchases.

### Do Timber Engineering Calculator or Voltage Drop Pro have ads?

Neither Timber Engineering Calculator nor Voltage Drop Pro shows ads.

### Which is updated more often, Timber Engineering Calculator or Voltage Drop Pro?

Timber Engineering Calculator ships an update every 39 months, and Voltage Drop Pro every 2 months. Most recently, Timber Engineering Calculator was updated on October 14, 2026 and Voltage Drop Pro on October 5, 2026.

---

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