# DrPhos Science Calculator vs PhysicPro

The clearest difference is iOS requirement: PhysicPro at 15.1 against DrPhos Science Calculator's 18.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. DrPhos Science Calculator sells 10 one-off in-app purchases and PhysicPro sells 1 in-app purchase, starting at $0.99 per year. Whichever you choose, the download price is not the number that matters.

DrPhos Science Calculator ships an update every 3 weeks, PhysicPro every 10 days. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | DrPhos Science Calculator | PhysicPro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 11 MB | 39 MB |
| Requires iOS | 18.5 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Monte L Helm](https://appshunter.io/developer/1715082616) | [Gentiana Etemi](https://appshunter.io/developer/1883027493) |

## What reviewers say

### DrPhos Science Calculator

[App page](https://appshunter.io/ios/app/drphos-science-calculator/id6747954398)

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

**In-app purchases (10)**

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


### PhysicPro

[App page](https://appshunter.io/ios/app/physicpro-physics-toolkit/id6760918761)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PhysicPro Premium | $0.99 | per year |


## Frequently asked questions

### Is DrPhos Science Calculator free?

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

### Is PhysicPro free?

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

### Do DrPhos Science Calculator or PhysicPro have ads?

Neither DrPhos Science Calculator nor PhysicPro shows ads.

### Which is updated more often, DrPhos Science Calculator or PhysicPro?

DrPhos Science Calculator ships an update every 3 weeks, and PhysicPro every 10 days. Most recently, DrPhos Science Calculator was updated on October 11, 2026 and PhysicPro on October 4, 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.*