Stokes Law Calculator
iOS app by Nitrio. Utilities · Nitrio
- Store rating
- 0 / 5
- Store rating count
- 0
- Download price
- 2.99 USD
- In-app purchases
- Unknown
- Version
- 1.5
- Listing last refreshed
- 2026-09-08
View the original store listing
Store description excerpt
Stokes' Law Calculator is the fastest, most accurate way to solve fluid dynamics problems on iPhone and iPad. Built for engineers, physicists, chemists, geologists, and students, it combines a polished scientific interface with a powerful calculation engine — and it works completely offline. Solve Stokes' Drag Force, Terminal Velocity, and Reynolds Number in seconds. Pick which variable to solve for and the app rearranges the formula automatically: F = 6πμrv, Vt = 2r²Δρg/9μ, Re = ρvD/μ. Every input has its own unit dropdown, so you can work in SI or imperial units without converting by hand. All math runs in SI internally for maximum precision, then results display in your preferred unit. KEY FEATURES • Stokes' Law — solve for drag force, viscosity, radius, or velocity • Terminal Velocity — solve for Vt, radius, or viscosity with overridable gravity (Earth, Moon, Mars) • Reynolds Number — instant validity badge tells you when Stokes' Law applies • Geometry & Mass — sphere volume, surface area, particle mass, settling time, density difference • Built-in Fluid & Material Database — Water, Air, Glycerin, Honey, Mercury, Engine Oil, Steel, Aluminum, Glass, Copper, Sand, Plastic, Ice, and more • Add, edit, and duplicate custom fluids and materials • Calculation History with auto-save, notes, timestamps, and full input snapshots • Step-by-step worked solutions with substituted values • Formula reference with assumptions, limitations, and worked examples PRIVACY FIRST No accounts. No tracking. No internet required. All calculations and your history stay on-device with SwiftData. Whether you're modeling sedimentation, sizing particles, studying viscosity, or checking that Stokes' Law applies to your flow regime, Stokes' Law Calculator gives you the answer — and shows the work. Thank you for your support, and feel free to visit nitrio.com for more apps for your iOS devices.
Review coverage
AppRill has captured 0 reviews for this app. This is a collected sample, separate from the store rating count. Latest review capture: Not captured yet.
Recent captured chart positions
No chart positions have been captured for this app yet.
Chart position, rating count and review coverage do not establish downloads, revenue or profit. Understand the differences.