# Dilution Calculator vs HPLC Advisor

The clearest difference is rating: Dilution Calculator at 4.7 against HPLC Advisor's 4.0. Dilution Calculator also leads on ratings volume (159 vs 2) and review sentiment (67% vs 50%). HPLC Advisor's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Dilution Calculator sells 2 one-off in-app purchases. HPLC Advisor asks for nothing beyond the download.

Dilution Calculator holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Dilution Calculator has 159 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of Dilution Calculator's written reviews are positive against 50% of HPLC Advisor's.

Dilution Calculator ships an update every 6 weeks, HPLC Advisor every 2 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Dilution Calculator | HPLC Advisor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (159 ratings)](https://appshunter.io/ios/app/dilution-calculator/id1511339044/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/hplc-advisor/id1566882318/reviews) |
| Number of ratings | **159** | 2 |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 24 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Samuel Blackburn](https://appshunter.io/developer/1601418735) | [Agilent Technologies, Inc](https://appshunter.io/developer/355827609) |

## What reviewers say

### Dilution Calculator

[App page](https://appshunter.io/ios/app/dilution-calculator/id1511339044)

This utility app simplifies the process of calculating dilution ratios for various applications. Users can input their desired ratio and bottle size to get instant, accurate results for the amounts of water and solution needed. It's ideal for tasks like car detailing, valeting, and paint mixing.

**Highlights:** Calculate dilution ratios, Enter ratio and bottle size, Instant accurate results, Supports litres and millilitres, Useful for car detailing, Useful for paint purposes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $1.99 | one-time |
| Remove Ads | $3.99 | one-time |


### HPLC Advisor

[App page](https://appshunter.io/ios/app/hplc-advisor/id1566882318)

This app provides tools for HPLC troubleshooting, method development, and data management. It offers calculators for method translation and performance prediction, a data library with conversions and formulas, and troubleshooting guides. Works offline for all HPLC instruments.

**Highlights:** HPLC troubleshooting guides, Method translation calculator, Chromatographic performance calculator, LC-related data library, Offline functionality, Universal instrument compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dilution Calculator free?

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

### Is HPLC Advisor free?

HPLC Advisor is free to download, with no in-app purchases.

### Which has better reviews, Dilution Calculator or HPLC Advisor?

Dilution Calculator is rated higher. Dilution Calculator averages 4.7 out of 5 from 159 ratings, while HPLC Advisor averages 4.0 from 2 ratings.

### Do Dilution Calculator or HPLC Advisor have ads?

Dilution Calculator shows ads; HPLC Advisor does not.

### Which is updated more often, Dilution Calculator or HPLC Advisor?

Dilution Calculator ships an update every 6 weeks, and HPLC Advisor every 2 months. Most recently, Dilution Calculator was updated on October 27, 2026 and HPLC Advisor 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.*