250+ iOS apps curated and reviewed
Annular Volume Calculator is the household name in annular volume calculator, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $0.99 | — | No | No | Jul 2026 | |
| 2 |  | Free | 1.3★ (6) | No | No | Jul 2026 | |
| 3 |  | Free | — | No | No | May 2026 | |
| 4 |  | Free | — | No | No | May 2026 | |
| 5 |  | Free | — | No | No | Jul 2026 | |
| 6 |  | Free | — | Yes | Yes | Aug 2026 | |
| 7 |  | $1.99 | — | No | Yes | Aug 2026 | |
| 8 |  | Free | 4.0★ (3) | No | No | Aug 2026 |
Estimate the total and filled volumes of various tank shapes, including rectangular, cylindrical, and those with conical or spherical bottoms. Calculates liquid volume and weight based on filling level, providing an estimate for oil and water tanks.
