# Circle and Sphere Pro vs Navier Stokes Explained

The clearest difference is price: Navier Stokes Explained at Free against Circle and Sphere Pro's $2.99. Circle and Sphere Pro's advantage is ads (none vs shown) and device support (3 vs 1). On in-app purchases there is nothing between them.

Navier Stokes Explained is free to download; Circle and Sphere Pro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Circle and Sphere Pro | Navier Stokes Explained |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/circle-and-sphere-pro/id1564077280/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | — |
| Monetization | Free | — |
| Size | 180 MB | 86 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [King Of The Hour, LLC](https://appshunter.io/developer/6810800636) |

## What reviewers say

### Circle and Sphere Pro

[App page](https://appshunter.io/ios/app/circle-and-sphere-pro/id1564077280)

This app calculates various geometric quantities for circles and spheres, including sectors and segments. It supports decimals and fractions, displays formulas and solutions step-by-step, and stores calculations in a history. Users can share their results.

**Highlights:** Calculates sphere and circle quantities, Supports sectors and segments, Shows formulas and step-by-step solutions, Handles decimals and fractions, Stores calculations in history, Allows sharing of results

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

**In-app purchases:** none


### Navier Stokes Explained

[App page](https://appshunter.io/ios/app/navier-stokes-explained/id6814265444)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Circle and Sphere Pro free?

Circle and Sphere Pro costs $2.99, with no in-app purchases.

### Is Navier Stokes Explained free?

Navier Stokes Explained is free to download, with no in-app purchases.

### Do Circle and Sphere Pro or Navier Stokes Explained have ads?

Navier Stokes Explained shows ads; Circle and Sphere Pro does not.

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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.*