# SteamWater vs PhysicsCalc

The clearest difference is price: SteamWater at Free against PhysicsCalc's $5.99. SteamWater also leads on in-app purchases (none vs 1) and update cadence (every 6 weeks vs every 3 months). On ads, device support and iOS requirement there is nothing between them.

SteamWater is free to download; PhysicsCalc costs $5.99 up front. PhysicsCalc sells 1 one-off in-app purchase. SteamWater asks for nothing beyond the download.

SteamWater ships an update every 6 weeks, PhysicsCalc every 3 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SteamWater | PhysicsCalc |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/physicscalc-126-formulas/id6761487165/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 11 MB |
| Requires iOS | 17.2 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Salvador Huertas](https://appshunter.io/developer/1796699694) | [Rustam Elmuradov](https://appshunter.io/developer/1889905226) |

## What reviewers say

### SteamWater

[App page](https://appshunter.io/ios/app/steamwater/id6742078820)

**Features:** macOS Compatibility

**In-app purchases:** none


### PhysicsCalc

[App page](https://appshunter.io/ios/app/physicscalc-126-formulas/id6761487165)

This app provides a comprehensive collection of physics formulas, calculations, and solutions. It offers a free version with essential formulas and tools, and a premium upgrade for advanced features and a complete formula library. It's designed for offline use, making it a convenient study aid.

**Highlights:** 185 physics formulas, Step-by-step calculation solutions, Smart calculation with unknown variable selection, Unit converter with 80+ units, Practice mode with answer checking, Dependency graphs and error calculator (premium), Offline functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Formulas | $1.99 | one-time |


## Frequently asked questions

### Is SteamWater free?

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

### Is PhysicsCalc free?

PhysicsCalc costs $5.99, and also offers in-app purchases.

### Do SteamWater or PhysicsCalc have ads?

Neither SteamWater nor PhysicsCalc shows ads.

### Which is updated more often, SteamWater or PhysicsCalc?

SteamWater ships an update every 6 weeks, and PhysicsCalc every 3 months. Most recently, SteamWater was updated on November 8, 2026 and PhysicsCalc 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.*