# DrPhos Science Calculator vs CipherKit

The clearest difference is in-app purchases: CipherKit at none against DrPhos Science Calculator's 10. DrPhos Science Calculator's advantage is update cadence (every 3 weeks vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

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

DrPhos Science Calculator ships an update every 3 weeks, CipherKit every 6 months. The most recent releases landed on November 5, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | DrPhos Science Calculator | CipherKit |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 23 MB |
| Requires iOS | 18.5 | **18.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | +4 |
| Developer | [Monte L Helm](https://appshunter.io/developer/1715082616) | [Zossoz](https://appshunter.io/developer/1885670786) |

## What reviewers say

### 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 |


### CipherKit

[App page](https://appshunter.io/ios/app/cipherkit-cipher-solver/id6760924474)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DrPhos Science Calculator free?

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

### Is CipherKit free?

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

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

Neither DrPhos Science Calculator nor CipherKit shows ads.

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

DrPhos Science Calculator ships an update every 3 weeks, and CipherKit every 6 months. Most recently, DrPhos Science Calculator was updated on November 5, 2026 and CipherKit on October 28, 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.*