O2 Duration app icon

Apps Like O2 Duration for iPhone and iPad

by Jeremy Fradet★ 1.01 ratingsUtilities$2.99Data updated 2026-09-08

O2 Duration screenshots

Ranked alternatives

Showing 421–440 of 1,000 ranked alternatives.

  1. Garbage Truck: Dumpster Pick Up app icon

    Garbage Truck: Dumpster Pick Up

    randall cole

    Up dumpsters and drive

    Play as a driver, navigating through neighborhoods to collect dumpsters. Tap to up dumpsters and deliver them to the landfill. Track progress through multiple levels and interact with on-screen elements to complete tasks.

    ★ 4.810 ratingsGames$0.99Data updated 2026-09-08
  2. Cirrus SR22 app icon

    Cirrus SR22

    Gyronimo, LLC

    Track fuel and performance data

    Perform weight and balance calculations for models. Input aircraft data to compute performance metrics. Generate load manifests. Adjust for fuel tank capacity and anti-icing fluid. Sync with flight manuals and avionics systems.

    ★ 4.03 ratingsEducation$24.99Data updated 2026-09-09
  3. Winery Math app icon

    Winery Math

    Elizabeth LeBeau

    Calculate wine chemistry and adjust ingredients precisely

    Calculate potassium meta-bisulphite needed for 40 ppms in 60 gallons or 800 liters. Determine total acidity and adjustments for target levels. Calculate sugar or water needed for chaptalization or dilution. Convert between metric and English units.

    ★ 4.04 ratingsUtilitiesFreeData updated 2026-09-08
  4. Greenheck Toolbox app icon

    Greenheck Toolbox

    Greenheck Fan Corporation

    Calculate fan laws and size ducts

    Fan Law Calculator allows users to input rpm, cfm, static pressure, and horsepower. Modifying one value recalculates the others. Ductulator helps size HVAC ducts by inputting shape, dimensions, air temperature, elevation, and roughness.

    ★ 3.03 ratingsUtilitiesFreeData updated 2026-09-08

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.