# Quick Conversion Units vs Salts in Chemistry

The clearest difference is price: Salts in Chemistry at $0.99 against Quick Conversion Units's $4.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Quick Conversion Units costs $4.99 and Salts in Chemistry $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Quick Conversion Units ships an update every 44 months, Salts in Chemistry every 33 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Quick Conversion Units | Salts in Chemistry |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 44 months | **Every 33 months** |
| Monetization | Paid | — |
| Size | 32 MB | 34 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [bader alshammari](https://appshunter.io/developer/858126240) | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) |

## 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


### Salts in Chemistry

[App page](https://appshunter.io/ios/app/salts-in-chemistry/id1187156720)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quick Conversion Units free?

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

### Is Salts in Chemistry free?

Salts in Chemistry costs $0.99, with no in-app purchases.

### Do Quick Conversion Units or Salts in Chemistry have ads?

Neither Quick Conversion Units nor Salts in Chemistry shows ads.

### Which is updated more often, Quick Conversion Units or Salts in Chemistry?

Quick Conversion Units ships an update every 44 months, and Salts in Chemistry every 33 months. Most recently, Quick Conversion Units was updated on October 24, 2026 and Salts in Chemistry on October 13, 2026.

---

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