# DrPhos Science Calculator — Scientific Math with Sig Figs

> Scientific Math with Sig Figs (iPhone/iPad app by Monte L Helm.)

- Source: https://appshunter.io/ios/app/drphos-science-calculator/id6747954398 (this page in markdown: same URL + `.md`)
- Developer: [Monte L Helm](https://appshunter.io/developer/1715082616)
- Category: Education, Utilities
- Price: Free with in-app purchases (on sale, was $0.99)
- Age rating: 4+
- Requires: iOS 18.5 · 11 MB
- Languages: American English
- Released: 2025-07-01
- Data updated: 2026-08-26
- User reviews in markdown: https://appshunter.io/ios/app/drphos-science-calculator/id6747954398/reviews.md

## What is DrPhos Science Calculator?

DrPhos Science Calculator is a focused scientific calculator for iPhone and iPad, designed for high school, college, and everyday science work.

Enter decimal values or scientific notation, control significant-figure formatting, and view results in both normal and scientific displays. Clear controls, accessible labels, restrained native haptics, and helpful error messages make calculations easier to enter and review.

Features include:

• Standard arithmetic and chained calculations
• Scientific-notation and exponent entry
• Adjustable significant-figure formatting
• Normal and scientific result displays
• Clear handling of incomplete entries and invalid operations
• Accessible calculator controls
• Restrained native haptic feedback
• Full offline operation
• Support for iPhone and iPad

A separate, user-opened More Chemistry Tools screen provides an optional link to DrPhos Chemistry Pro for those who need additional chemistry tools.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 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 |



## Version history (last 4 releases)

### 4.0.1 — 2026-08-11

Version 4.0.1 adds the new DrPhos Science Calculator app icon and improves clearing calculations with a two-stage C/AC key. When an operator is pending, C cancels the operation while keeping the displayed number; AC then clears the calculator. VoiceOver labels update to match each action.

### 4.0 — 2026-07-21

Version 4.0 brings the released scientific-calculator experience from DrPhos Chemistry Pro to DrPhos Science Calculator.

• Added significant-figure formatting
• Added normal and scientific result displays
• Improved decimal and exponent entry
• Added accessible calculator controls
• Added restrained native haptic feedback
• Improved errors for incomplete entries and invalid operations
• Added an app privacy manifest
• Added a user-opened More Chemistry Tools screen

### 3.0 — 2025-08-01

What’s New
	•	Added automatic significant figure rounding
	•	Improved support for scientific notation
	•	Enhanced UI for better readability and input accuracy
	•	Bug fixes and performance improvements

### 1.0 — 2025-07-01

No release notes.

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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

## Related topics

[drphos science calculator](https://appshunter.io/ios/topics/drphos-science-calculator)

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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 2026-08-26.*