# Circle Calculator vs Learn SQL

The clearest difference is iOS requirement: Learn SQL at 15.0 against Circle Calculator's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Circle Calculator sells 3 in-app purchases, starting at $1.99 per 7 days and Learn SQL sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Circle Calculator | Learn SQL |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 27 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Muhammed Samil DEMIR](https://appshunter.io/developer/1600108280) | [Alpha Beat Limited](https://appshunter.io/developer/1745742707) |

## What reviewers say

### Circle Calculator

[App page](https://appshunter.io/ios/app/circle-calculator-pi-and-area/id1607441563)

This app simplifies circle geometry calculations by instantly solving for all properties (radius, area, diameter, circumference) from a single known value. It's ideal for students, engineers, designers, and DIYers needing quick, accurate measurements.

**Highlights:** Calculate all circle properties from one input, View mathematical formulas used, Customize Pi value for precision, Clean and simple user interface, Fast and accurate results

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Monthly Premium | $4.99 | per month |
| Annual Premium | $24.99 | per year |


### Learn SQL

[App page](https://appshunter.io/ios/app/learn-sql-offline-practice/id6797071055)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is Circle Calculator free?

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

### Is Learn SQL free?

Learn SQL is free to download, with in-app purchases available.

### Do Circle Calculator or Learn SQL have ads?

Neither Circle Calculator nor Learn SQL shows ads.

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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.*