# Acid Base pH vs Model ChemLab for iPad

The clearest difference is price: Acid Base pH at $3.99 against Model ChemLab for iPad's $33.99. Model ChemLab for iPad's advantage is update cadence (weekly vs every 3 months) and iOS requirement (14.0 vs 17.1). On ads, in-app purchases and device support there is nothing between them.

Acid Base pH costs $3.99 and Model ChemLab for iPad $33.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Acid Base pH ships an update every 3 months, Model ChemLab for iPad weekly. The most recent releases landed on August 20, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Acid Base pH | Model ChemLab for iPad |
| --- | --- | --- |
| Price | **$3.99** | $33.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/acid-base-ph/id977951851/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | — |
| Size | 2 MB | 19 MB |
| Requires iOS | 17.1 | **14.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Model Science Software Inc.](https://appshunter.io/developer/1505551537) |

## What reviewers say

### Acid Base pH

[App page](https://appshunter.io/ios/app/acid-base-ph/id977951851)

Accurately estimate pH values for acid-base aqueous systems. Calculate pH for weak and strong acids/bases, plot titration curves, and find equivalent points. Export data and find titrant volumes for desired pH.

**Highlights:** Estimate pH of acid-base solutions, Plot titration curves, Find pH and titrant volume at equivalent points, Export titration plots as image or data, Calculate titrant volume for desired pH, Includes list of common indicators

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

**In-app purchases:** none


### Model ChemLab for iPad

[App page](https://appshunter.io/ios/app/model-chemlab-for-ipad/id1556078955)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Acid Base pH free?

Acid Base pH costs $3.99, with no in-app purchases.

### Is Model ChemLab for iPad free?

Model ChemLab for iPad costs $33.99, with no in-app purchases.

### Do Acid Base pH or Model ChemLab for iPad have ads?

Neither Acid Base pH nor Model ChemLab for iPad shows ads.

### Which is updated more often, Acid Base pH or Model ChemLab for iPad?

Acid Base pH ships an update every 3 months, and Model ChemLab for iPad weekly. Most recently, Acid Base pH was updated on August 20, 2026 and Model ChemLab for iPad on September 23, 2026.

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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.*