10+ iOS apps curated and reviewed
Every iPhone needs a few good saybolt viscosity apps. We benchmark 10+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 3.0★ (2) | No | No | May 2026 |
| 2 |  | Free | 5.0★ (3) | No | No | May 2026 |
| 3 |  | Free | — | No | No | May 2026 |
| 4 |  | $2.99 | — | No | No | May 2026 |
| 5 |  | Free | — | No | No | May 2026 |
| 6 |  | Free | — | No | No | May 2026 |
| 7 |  | Free | — | No | No | May 2026 |
| 8 |  | Free | — | No | No | May 2026 |
This application serves as a calculator for converting viscosity and temperature values for petroleum fuels. It allows users to convert Kinematic Viscosity in Centistokes to desired target values across different temperature scales. In landscape mode, it transforms into a slider for visual comparison of viscosity units.
This professional tool performs complex oil calculations for various movements like tank transfers and loading operations. It includes comprehensive conversion tables, ASTM calculations, and blending models. Essential for oil professionals, traders, and engineers on the go.
