# DrPhos' Solution Calculator — Molarity and Dilution Tool

> Molarity and Dilution Tool (iPhone/iPad app by Monte L Helm.)

- Source: https://appshunter.io/ios/app/drphos-solution-calculator/id6478795025 (this page in markdown: same URL + `.md`)
- Developer: [Monte L Helm](https://appshunter.io/developer/1715082616)
- Category: Education, Utilities
- Price: $0.99 with in-app purchases
- Age rating: 4+
- Requires: iOS 17.2 · 15 MB
- Languages: English
- Released: 2024-03-03
- Data updated: 2026-06-05
- User reviews in markdown: https://appshunter.io/ios/app/drphos-solution-calculator/id6478795025/reviews.md

## What is DrPhos' Solution Calculator?

Calculate Molarity and Dilution with Ease

The DrPhos Solutions Calculator helps you quickly solve solution concentration problems using molarity, volume, and dilution formulas. Whether you’re mixing solutions, preparing for lab, or reviewing for exams, this tool makes chemistry calculations simple and accurate.

Just enter the values you know—moles, volume, or molarity—and the app will solve for the unknown instantly. Great for high school, AP Chemistry, and college-level coursework.

Features:
	•	Calculates molarity, volume, or moles
	•	Supports dilution problems using M₁V₁ = M₂V₂
	•	Clean interface with instant feedback
	•	Designed for student use in labs and homework
	•	Compatible with other DrPhos chemistry tools

Unlock more tools in the DrPhos GenChem Helper suite, including:
	•	Molar Mass Calculator
	•	Reaction Balancer
	•	Stoichiometry Solver
	•	pH Calculator
	•	Significant Figures Counter
	•	Integrated Rate Law Calculator
	•	Scientific Calculator
	•	General Chemistry Naming Tool
	•	Ionic Compound Builder
	•	Quadratic Equation Solver

Each tool is available for $0.99, or unlock them all for $9.99.

## Pricing and in-app purchases

Base price: $0.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| General Chemistry Naming | $0.99 | one-time |
| Molar Mass Calculator | $0.99 | one-time |
| Stoichiometry | $0.99 | one-time |
| Reaction Balancer | $0.99 | one-time |
| Solution Concentrations | $0.99 | one-time |
| pH Calculator | $0.99 | one-time |
| Kinetics | $0.99 | one-time |
| Quadratic Equation Solver | $0.99 | one-time |
| Science Calculator | $0.99 | one-time |
| Significant Figures Counter | $0.99 | one-time |



## Version history (last 5 releases)

### 3.0 — 2025-08-01

What’s New
	•	Updated graphics and streamlined user interface for better readability and input flow
	•	Added support for molarity, volume, and mole-based calculations
	•	Includes M₁V₁ = M₂V₂ dilution functionality
	•	Improved error handling and scientific notation support
	•	Unlock access to other DrPhos chemistry tools within the app

### 2.3.1 — 2024-10-08

Fixed the text field windows to hide the holder text after the calculation is complete.

### 2.3 — 2024-07-17

Bug fixes and updated graphics

### 2.2.2 — 2024-06-29

bug fixes
added kinetics calculator

### 2.0 — 2024-06-04

Added in-app purchases for other mini-helper chemistry apps.

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## More apps by Monte L Helm

- [DrPhos' Molar Mass](https://appshunter.io/ios/app/drphos-molar-mass/id6471319631)
- [Ionic Compound Builder](https://appshunter.io/ios/app/ionic-compound-builder/id6472619902)
- [DrPhos' Ionic Compounds](https://appshunter.io/ios/app/drphos-ionic-compounds/id6473097401)
- [DrPhos' Reaction Balancer](https://appshunter.io/ios/app/drphos-reaction-balancer/id6474077005)
- [DrPhos' Stoichiometry](https://appshunter.io/ios/app/drphos-stoichiometry/id6475633178)
- [DrPhos' GenChem Naming](https://appshunter.io/ios/app/drphos-genchem-naming/id6476617346)

All apps by Monte L Helm: https://appshunter.io/developer/1715082616

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*