# pH vs Solution Dilution Calculator

The clearest difference is price: pH at Free against Solution Dilution Calculator's $2.99. pH also leads on update cadence (monthly vs every 22 months) and iOS requirement (7.1 vs 13). On ads, in-app purchases and device support there is nothing between them.

pH is free to download; Solution Dilution Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

pH ships an update monthly, Solution Dilution Calculator every 22 months. The most recent releases landed on September 14, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | pH | Solution Dilution Calculator |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solution-dilution-calculator/id1353265965/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 22 months |
| Monetization | — | Paid |
| Size | 2 MB | 1 MB |
| Requires iOS | **7.1** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [taskit](https://appshunter.io/developer/830597040) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### pH

[App page](https://appshunter.io/ios/app/ph-meter/id830597037)

**Features:** macOS Compatibility

**In-app purchases:** none


### Solution Dilution Calculator

[App page](https://appshunter.io/ios/app/solution-dilution-calculator/id1353265965)

This utility app helps users calculate the precise volume of stock concentrate needed to create a diluted solution of a specific concentration and volume. It supports various concentration units and is designed for educational and research laboratory use.

**Highlights:** Dilution calculations, Supports mass/volume units, Supports weight/volume units, Ideal for labs and education, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is pH free?

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

### Is Solution Dilution Calculator free?

Solution Dilution Calculator costs $2.99, with no in-app purchases.

### Do pH or Solution Dilution Calculator have ads?

Neither pH nor Solution Dilution Calculator shows ads.

### Which is updated more often, pH or Solution Dilution Calculator?

pH ships an update monthly, and Solution Dilution Calculator every 22 months. Most recently, pH was updated on September 14, 2026 and Solution Dilution Calculator on September 10, 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.*