# DrPhos' Stoichiometry vs LineRegression

The clearest difference is price: LineRegression at Free against DrPhos' Stoichiometry's $0.99. LineRegression also leads on in-app purchases (none vs 11) and iOS requirement (12.0 vs 17.2). On ads and device support there is nothing between them.

LineRegression is free to download; DrPhos' Stoichiometry costs $0.99 up front. DrPhos' Stoichiometry sells 11 one-off in-app purchases. LineRegression asks for nothing beyond the download.

## The numbers

| Metric | DrPhos' Stoichiometry | LineRegression |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/drphos-stoichiometry/id6475633178/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Paid | — |
| Size | 15 MB | 58 MB |
| Requires iOS | 17.2 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Monte L Helm](https://appshunter.io/developer/1715082616) | [Carlos Franca](https://appshunter.io/developer/1842955146) |

## What reviewers say

### DrPhos' Stoichiometry

[App page](https://appshunter.io/ios/app/drphos-stoichiometry/id6475633178)

This tool simplifies solving chemical reaction problems by allowing users to input balanced equations and identify known and unknown compounds. It instantly calculates moles and mass, assisting students with various stoichiometry challenges.

**Highlights:** Mole, mass, and volume conversions, Balanced chemical equation support, Compound selection, Limiting reactant detection, High school and college chemistry focus

**Features:** macOS Compatibility

**In-app purchases (11)**

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


### LineRegression

[App page](https://appshunter.io/ios/app/lineregression/id6754206347)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DrPhos' Stoichiometry free?

DrPhos' Stoichiometry costs $0.99, and also offers in-app purchases.

### Is LineRegression free?

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

### Do DrPhos' Stoichiometry or LineRegression have ads?

Neither DrPhos' Stoichiometry nor LineRegression shows ads.

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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.*