# Acid Base pH vs Uncertainty Calculator

Acid Base pH and Uncertainty Calculator are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Acid Base pH costs $3.99 and Uncertainty Calculator $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Acid Base pH against 5.0 for Uncertainty Calculator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Acid Base pH | Uncertainty Calculator |
| --- | --- | --- |
| Price | $3.99 | $3.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/acid-base-ph/id977951851/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/uncertainty-calculator/id1170905440/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Paid | Paid |
| Size | 2 MB | 1 MB |
| Requires iOS | 17.1 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Roman Volinsky](https://appshunter.io/developer/977951850) |

## 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


### Uncertainty Calculator

[App page](https://appshunter.io/ios/app/uncertainty-calculator/id1170905440)

This app allows users to perform error propagation calculations for mathematical expressions involving uncertain variables. It supports absolute and relative error inputs, various functions, and trigonometric calculations in degrees or radians. The tool helps ensure accurate reporting of results based on estimated errors.

**Highlights:** Error propagation calculations, Absolute and relative error input, Support for mathematical functions, Trigonometric calculations (degrees/radians), Variable combination in expressions, Significant figure guidance

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

**In-app purchases:** none


## Frequently asked questions

### Is Acid Base pH free?

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

### Is Uncertainty Calculator free?

Uncertainty Calculator costs $3.99, with no in-app purchases.

### Which has better reviews, Acid Base pH or Uncertainty Calculator?

Acid Base pH and Uncertainty Calculator are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Acid Base pH or Uncertainty Calculator have ads?

Neither Acid Base pH nor Uncertainty Calculator shows ads.

### Which is updated more often, Acid Base pH or Uncertainty Calculator?

Acid Base pH ships an update every 3 months, and Uncertainty Calculator every 3 months. Most recently, Acid Base pH was updated on November 6, 2026 and Uncertainty Calculator on November 2, 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.*