# SAA vs DrPhos Science Calculator

The clearest difference is in-app purchases: SAA at none against DrPhos Science Calculator's 10. SAA also leads on iOS requirement (15.0 vs 18.5). DrPhos Science Calculator's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. DrPhos Science Calculator sells 10 one-off in-app purchases. SAA asks for nothing beyond the download.

SAA ships an update every 2 months, DrPhos Science Calculator every 3 weeks. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SAA | DrPhos Science Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/drphos-science-calculator/id6747954398/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 27 MB | 11 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Davy Raitt](https://appshunter.io/developer/1795318281) | [Monte L Helm](https://appshunter.io/developer/1715082616) |

## What reviewers say

### SAA

[App page](https://appshunter.io/ios/app/saa-c03-solutions-architect/id6746547223)

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

**In-app purchases:** none


### DrPhos Science Calculator

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

This scientific calculator app is designed for high school and college students, as well as everyday science tasks. It offers precise control over significant figures and displays results in both normal and scientific formats. The interface is user-friendly with clear controls and helpful error messages, supporting offline use on iPhone and iPad.

**Highlights:** Standard arithmetic and chained calculations, Scientific-notation and exponent entry, Adjustable significant-figure formatting, Normal and scientific result displays, Clear error handling, Offline operation, iPhone and iPad support

**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 |


## Frequently asked questions

### Is SAA free?

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

### Is DrPhos Science Calculator free?

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

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

Neither SAA nor DrPhos Science Calculator shows ads.

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

SAA ships an update every 2 months, and DrPhos Science Calculator every 3 weeks. Most recently, SAA was updated on October 28, 2026 and DrPhos Science Calculator on November 5, 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.*