# CWK 功夫 vs Calculus Formulas

The clearest difference is in-app purchases: CWK 功夫 at none against Calculus Formulas's 3. CWK 功夫 also leads on iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Calculus Formulas sells 3 in-app purchases, starting at $4.99 per 7 days. CWK 功夫 asks for nothing beyond the download.

## The numbers

| Metric | CWK 功夫 | Calculus Formulas |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Size | 58 MB | 48 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [School Team Technology Limited](https://appshunter.io/developer/853926385) | [Mobin Akhter](https://appshunter.io/developer/1812505286) |

## What reviewers say

### CWK 功夫

[App page](https://appshunter.io/ios/app/cwk/id1665223153)

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

**In-app purchases:** none


### Calculus Formulas

[App page](https://appshunter.io/ios/app/calculus-formulas-calcref/id6761394165)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| CalcRef Yearly Premium | $44.99 | per year |
| CalcRef Premium Lifetime | $74.99 | one-time |


## Frequently asked questions

### Is CWK 功夫 free?

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

### Is Calculus Formulas free?

Calculus Formulas is free to download, with in-app purchases available.

### Do CWK 功夫 or Calculus Formulas have ads?

Neither CWK 功夫 nor Calculus Formulas 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.*