Buoyancy Calculator vs WebMO Premium
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Buoyancy Calculator
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.
- Buoyant Force Calculator
- Density Calculator
- Volume Calculator
- Weight Calculator
- Real-time buoyancy visualization
- Interactive graphics
- Customizable decimal precision
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BUOYANCY CALCULATOR - Master Fluid Physics The ultimate tool for understanding and calculating buoyancy forces! Whether you're a student learning Archimedes' principle, an engineer designing marine vessels, or a physics enthusiast, this app makes complex fluid mechanics calculations simple and visual. POWERFUL CALCULATION MODES • Buoyant Force Calculator - Calculate the upward force exerted by fluids • Density Calculator - Determine fluid or object density • Volume Calculator - Find displaced volume from force measurements • Weight Calculator - Calculate object mass from fluid properties VISUAL LEARNING • Real-time buoyancy visualization showing floating, sinking, or neutral states • Interactive graphics that respond to your calculations • Color-coded float states for instant understanding • See physics principles come to life with dynamic animations PROFESSIONAL FEATURES • Customizable decimal precision (0-6 places) • One-tap result copying to clipboard • Comprehensive reference guide with formulas • Support for metric units (kg/m³, m³, N, kg) PERFECT FOR • Physics & Engineering Students - Master Archimedes' principle and fluid mechanics • Marine Engineers - Calculate buoyancy for ship and submarine design • Scuba Divers - Understand buoyancy control and equipment • Educators - Demonstrate fluid physics concepts visually • Scientists & Researchers - Quick calculations for experiments • Hobbyists - Model boats, submarines, and underwater robotics EDUCATIONAL VALUE Learn fundamental physics concepts: • Archimedes' Principle • Buoyant force = ρ × V × g formula • Relationship between density, volume, and force • Floating and sinking mechanics • Fluid displacement principles HOW IT WORKS 1. Select your calculation mode (Force, Density, Volume, or Weight) 2. Enter known values or choose a fluid preset 3. See whether objects float, sink, or remain neutral 4. Copy results for use in reports or assignments USE CASES • Calculate if an object will float in water • Determine buoyancy compensation for diving equipment • Design floating structures and vessels • Solve physics homework problems • Verify engineering calculations • Plan underwater ROV projects Perfect for anyone working with fluids, from high school physics students to professional marine engineers! In physics, buoyancy or upthrust is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth due to the weight of the overlying fluid. Therefore, the pressure at the bottom of a column of fluid is greater than at the top. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top, resulting in a net upward force on the object. This force is proportional to the pressure difference and, according to Archimedes' principle, is equivalent to the weight of the displaced fluid. It is also known as buoyant force. For this reason, an object denser than the fluid it is submerged in tends to sink. If the object is less dense than the liquid or is shaped appropriately (as in a boat), the force can keep the object afloat. This can occur only in a non-inertial reference frame with a gravitational field or is accelerating due to a force other than gravity, defining a "downward" direction. In a situation of fluid statics, the net upward buoyancy force is equal to the weight of the fluid displaced by the body. Buoyant force equation: The buoyant force is given by the following formula: B = ρ * V * g The weight of the displaced liquid is obtained by multiplying the volume by density: W = ρ * V where: ρ is the density of the liquid in which the object is immersed, measured in kg/m³ V is the volume of the displaced liquid, measured in m³ g is the gravitational acceleration, measured in m/s² B is the buoyant force W is the weight of the displaced liquid in kg Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.
WebMO Premium
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.
- 3D molecular editor
- VSEPR and molecular mechanics optimization
- Orbital and symmetry visualization
- Chemical data lookup
- Computational chemistry program integration
- Spectra visualization
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WebMO Premium is equivalent in functionality to the free 'WebMO' app in conjunction with the 'WebMO Premium' in-app purchase. This paid version is provided for convienence for volume purchases. WebMO allows users to build and view molecules in 3-D, visualize orbitals and symmetry elements, lookup chemical information and properties from external databases, and access state-of-the-art computational chemistry programs. WebMO is recommended for students and faculty in high school, college, and graduate school who desire mobile access to molecular structures, information, and calculations. WebMO capabilities include: - Build molecules by drawing atoms and bonds in a 3-D molecular editor, or by speaking the name (e.g., “aspirin”) - Optimize structures using VSEPR theory or molecular mechanics - View Huckel molecular orbitals, electron density, and electrostatic potential - View molecular vibrations - View point group and symmetry elements of molecules - Lookup basic molecular information, including IUPAC and common names, stoichiometry, molar mass - Lookup chemical data from PubChem and ChemSpider - Lookup experimental and predicted molecular properties from external databases (NIST, Sigma-Aldrich) - Lookup IR, UV-VIS, NMR, and mass spectra from external databases (NIST, SDBS) - Capture high-resolution molecular images - Save and recall molecular structures locally - Export and import structures via email WebMO is also a front-end to WebMO servers (version 14 and higher): - Supports Gaussian, GAMESS, Molpro, MOPAC, NWChem, ORCA, PQS, PSI, Quantum Espresso, VASP, Q-Chem, and Tinker computational chemistry programs - Submit, monitor, and view calculations - View formatted tabular data extracted from output files, as well as raw output - Visualize geometry, partial charges, dipole moment, normal vibrational modes, molecular orbitals, and NMR/IR/UV-VIS spectra
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Buoyancy Calculator | WebMO Premium |
|---|---|---|
| Price | $2.99 — better | $4.99 |
| Rating | 2.3 (3 ratings) | 4.0 (4 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | 3 | 4 — better |
| Update frequency | Every 28 months | Every 17 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | WebMO, LLC |
Customer experience
Buoyancy Calculator
WebMO Premium
In-app purchases
Buoyancy Calculator
No in-app purchases
WebMO Premium
No in-app purchases
Questions
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