# Probability Toolkit vs Buoyancy Calculator

The clearest difference is update cadence: Probability Toolkit at every 10 months against Buoyancy Calculator's every 28 months. Probability Toolkit also leads on price ($1.99 vs $2.99) and iOS requirement (12.0 vs 17.6). Buoyancy Calculator's advantage is device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Probability Toolkit costs $1.99 and Buoyancy Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Probability Toolkit ships an update every 10 months, Buoyancy Calculator every 28 months. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Probability Toolkit | Buoyancy Calculator |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| Rating | — | **[2.3 (3 ratings)](https://appshunter.io/ios/app/buoyancy-calculator/id1393450923/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 28 months |
| Monetization | — | Paid |
| Size | 41 MB | 1 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Probability Toolkit

[App page](https://appshunter.io/ios/app/probability-toolkit/id652216774)

**Features:** macOS Compatibility

**In-app purchases:** none


### Buoyancy Calculator

[App page](https://appshunter.io/ios/app/buoyancy-calculator/id1393450923)

This app simplifies fluid mechanics calculations, allowing users to determine buoyant forces, densities, volumes, and weights. It offers real-time visualizations and interactive graphics to help understand physics principles like Archimedes' principle.

**Highlights:** Buoyant Force Calculator, Density Calculator, Volume Calculator, Weight Calculator, Real-time buoyancy visualization, Interactive graphics, Customizable decimal precision

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Probability Toolkit free?

Probability Toolkit costs $1.99, with no in-app purchases.

### Is Buoyancy Calculator free?

Buoyancy Calculator costs $2.99, with no in-app purchases.

### Do Probability Toolkit or Buoyancy Calculator have ads?

Neither Probability Toolkit nor Buoyancy Calculator shows ads.

### Which is updated more often, Probability Toolkit or Buoyancy Calculator?

Probability Toolkit ships an update every 10 months, and Buoyancy Calculator every 28 months. Most recently, Probability Toolkit was updated on October 19, 2026 and Buoyancy Calculator on October 17, 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.*