# Buoyancy Calculator vs WebMO Premium

The clearest difference is rating: WebMO Premium at 4.0 against Buoyancy Calculator's 2.3. WebMO Premium also leads on iOS requirement (12.0 vs 17.6). Buoyancy Calculator's advantage is price ($2.99 vs $4.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Buoyancy Calculator costs $2.99 and WebMO Premium $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WebMO Premium holds the better App Store score, 4.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 4 respectively.

Buoyancy Calculator ships an update every 28 months, WebMO Premium every 17 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Buoyancy Calculator | WebMO Premium |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/buoyancy-calculator/id1393450923/reviews) | **[4.0 (4 ratings)](https://appshunter.io/ios/app/webmo-premium/id1448564335/reviews)** |
| Number of ratings | 3 | **4** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 17 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 12 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [WebMO, LLC](https://appshunter.io/developer/797898098) |

## What reviewers say

### 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


### WebMO Premium

[App page](https://appshunter.io/ios/app/webmo-premium/id1448564335)

This app allows users to build and visualize molecules in 3D, access chemical information from external databases, and interact with advanced computational chemistry programs. It's designed for students and faculty needing mobile access to molecular structures and data.

**Highlights:** 3D molecular editor, VSEPR and molecular mechanics optimization, Orbital and symmetry visualization, Chemical data lookup, Computational chemistry program integration, Spectra visualization

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

**In-app purchases:** none


## Frequently asked questions

### Is Buoyancy Calculator free?

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

### Is WebMO Premium free?

WebMO Premium costs $4.99, with no in-app purchases.

### Which has better reviews, Buoyancy Calculator or WebMO Premium?

WebMO Premium is rated higher. Buoyancy Calculator averages 2.3 out of 5 from 3 ratings, while WebMO Premium averages 4.0 from 4 ratings.

### Do Buoyancy Calculator or WebMO Premium have ads?

Neither Buoyancy Calculator nor WebMO Premium shows ads.

### Which is updated more often, Buoyancy Calculator or WebMO Premium?

Buoyancy Calculator ships an update every 28 months, and WebMO Premium every 17 months. Most recently, Buoyancy Calculator was updated on November 2, 2026 and WebMO Premium 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.*