# pHCalculation vs BiotechX

pHCalculation and BiotechX are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. pHCalculation sells 5 one-off in-app purchases and BiotechX sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | pHCalculation | BiotechX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Size | 2 MB | 9 MB |
| Requires iOS | 18.6 | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jatuphol Jaturapat](https://appshunter.io/developer/1788860463) | [JT Scientific Consulting LLC](https://appshunter.io/developer/1612699648) |

## What reviewers say

### 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 |


### BiotechX

[App page](https://appshunter.io/ios/app/biotechx/id6774381502)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $19.99 | one-time |


## Frequently asked questions

### Is pHCalculation free?

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

### Is BiotechX free?

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

### Do pHCalculation or BiotechX have ads?

Neither pHCalculation nor BiotechX 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.*