# Wisut Library vs pHCalculation

The clearest difference is in-app purchases: Wisut Library at none against pHCalculation's 5. Wisut Library also leads on iOS requirement (11.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. pHCalculation sells 5 one-off in-app purchases. Wisut Library asks for nothing beyond the download.

## The numbers

| Metric | Wisut Library | pHCalculation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Size | 39 MB | 2 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Openserve Co.,Ltd.](https://appshunter.io/developer/479158615) | [Jatuphol Jaturapat](https://appshunter.io/developer/1788860463) |

## What reviewers say

### Wisut Library

[App page](https://appshunter.io/ios/app/wisut-library/id1553746224)

**Features:** macOS Compatibility

**In-app purchases:** none


### pHCalculation

[App page](https://appshunter.io/ios/app/phcalculation/id6743737030)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Show solution | $0.99 | one-time |
| Buffer Calculator | $0.99 | one-time |
| Salt pH calculator | $0.99 | one-time |
| Reverse pH calculator | $0.99 | one-time |
| Unlock All Features. | $1.99 | one-time |


## Frequently asked questions

### Is Wisut Library free?

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

### Is pHCalculation free?

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

### Do Wisut Library or pHCalculation have ads?

Neither Wisut Library nor pHCalculation 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.*