# Timber Engineering Calculator vs Sound Amplifier

The clearest difference is price: Sound Amplifier at Free against Timber Engineering Calculator's $3.99. Sound Amplifier also leads on update cadence (every 5 months vs every 39 months). Timber Engineering Calculator's advantage is in-app purchases (none vs 3). On rating, ratings volume, ads and device support there is nothing between them.

Sound Amplifier is free to download; Timber Engineering Calculator costs $3.99 up front. Sound Amplifier sells 3 in-app purchases, starting at $12.99 per month. Timber Engineering Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.9 for Timber Engineering Calculator against 3.9 for Sound Amplifier. Both are backed by a comparable volume of ratings — 7 and 8 respectively.

Timber Engineering Calculator ships an update every 39 months, Sound Amplifier every 5 months. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Timber Engineering Calculator | Sound Amplifier |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/timber-engineering-calculator/id646321927/reviews) | **[3.9 (8 ratings)](https://appshunter.io/ios/app/sound-amplifier-voice-boost/id6754278666/reviews)** |
| Number of ratings | 7 | **8** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 5 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 35 MB | 7 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Hoang Le](https://appshunter.io/developer/1763197902) |

## 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


### Sound Amplifier

[App page](https://appshunter.io/ios/app/sound-amplifier-voice-boost/id6754278666)

Enhance nearby sounds and voices in real time using your phone's microphone and headphones. Reduce background noise and customize audio levels for clearer listening in various environments. Offers adjustable amplification and sensitivity for a personalized sound experience.

**Highlights:** Real-time sound amplification, Voice and speech enhancement, Background noise reduction, Adjustable amplification levels, Customizable sound profiles, Wired and Bluetooth headphone support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Month Pass | $12.99 | per month |
| Year Pass | $69.99 | per year |
| Lifetime Access | $99.99 | one-time |


## Frequently asked questions

### Is Timber Engineering Calculator free?

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

### Is Sound Amplifier free?

Sound Amplifier is free to download, with in-app purchases available.

### Which has better reviews, Timber Engineering Calculator or Sound Amplifier?

Sound Amplifier is rated higher. Timber Engineering Calculator averages 3.9 out of 5 from 7 ratings, while Sound Amplifier averages 3.9 from 8 ratings.

### Do Timber Engineering Calculator or Sound Amplifier have ads?

Neither Timber Engineering Calculator nor Sound Amplifier shows ads.

### Which is updated more often, Timber Engineering Calculator or Sound Amplifier?

Timber Engineering Calculator ships an update every 39 months, and Sound Amplifier every 5 months. Most recently, Timber Engineering Calculator was updated on November 4, 2026 and Sound Amplifier on November 9, 2026.

---

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