# Quick Conversion Units vs BtH

The clearest difference is price: BtH at Free against Quick Conversion Units's $4.99. BtH also leads on update cadence (every 5 weeks vs every 44 months). Quick Conversion Units's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 17.0). On ads and device support there is nothing between them.

BtH is free to download; Quick Conversion Units costs $4.99 up front. BtH sells 3 in-app purchases, starting at $3.99 per month. Quick Conversion Units asks for nothing beyond the download.

Quick Conversion Units ships an update every 44 months, BtH every 5 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Quick Conversion Units | BtH |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quick-conversion-units/id1159050734/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 44 months | **Every 5 weeks** |
| Monetization | Paid | — |
| Size | 32 MB | 54 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [bader alshammari](https://appshunter.io/developer/858126240) | [James Lauffer](https://appshunter.io/developer/1695869021) |

## What reviewers say

### Quick Conversion Units

[App page](https://appshunter.io/ios/app/quick-conversion-units/id1159050734)

This app offers a streamlined conversion experience for oilfield professionals. It provides over 1000 conversion types across 19 categories, all accessible on a single screen for maximum efficiency and accuracy.

**Highlights:** Single-screen conversions, 19 conversion categories, 1000+ conversion types, Oilfield specific units, Increases productivity, Enhances accuracy

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

**In-app purchases:** none


### BtH

[App page](https://appshunter.io/ios/app/bth-simply-piano-lessons/id6450996205)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BtH | $3.99 | per month |
| BtH | $17.99 | per 6 months |
| BtH | $24.99 | per year |


## Frequently asked questions

### Is Quick Conversion Units free?

Quick Conversion Units costs $4.99, with no in-app purchases.

### Is BtH free?

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

### Do Quick Conversion Units or BtH have ads?

Neither Quick Conversion Units nor BtH shows ads.

### Which is updated more often, Quick Conversion Units or BtH?

Quick Conversion Units ships an update every 44 months, and BtH every 5 weeks. Most recently, Quick Conversion Units was updated on October 24, 2026 and BtH on October 27, 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.*