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 341–360 of 1,000 ranked alternatives.

  1. CRJ Training Guide PRO app icon

    CRJ Training Guide PRO

    Gustavo Legarreta

    Study materials and review questions

    Access materials including 1660 questions with explanations, 600 images, 1300 references, and 410 definitions. Search FAA and JEPPESEN abbreviations quickly. Includes a glossary of terms for aviation terminology.

    ★ 4.45 ratingsProductivity$14.99Data updated 2026-09-06
  1. Dr. DE app icon

    Dr. DE

    StrataGen, Inc.

    Solve drilling problems instantly

    Access drilling engineering data instantly with a comprehensive toolbox. Calculate well parameters, check standards, and solve common problems. Retrieve formulas, charts, and reference materials. Share results and export data for reports.

    ★ 4.515 ratingsUtilitiesFreeData updated 2026-09-09
  2. AQUASKY app icon

    AQUASKY

    Hongjie Intelligent Co., Ltd.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
  3. SmartSkid Controller app icon

    SmartSkid Controller

    RPM Industries, LLC.

    Monitor fluid levels and control pump operations

    Monitor fluid levels in all tanks and receive alerts when tanks are full or lack sufficient capacity. Pre-program clean fluid delivery amounts and manually control the pump. Update software over the air.

    ★ 3.05 ratingsUtilitiesFreeData updated 2026-09-06
  4. CDHM Tester app icon

    CDHM Tester

    Shenzhen Leinuo Intelligent Technology Co., Ltd.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
  5. Loughborough Wave Lab app icon

    Loughborough Wave Lab

    Daniel Browne

    Explore electromagnetic waves visually

    Explore electromagnetic concepts through interactive simulations. Create and manipulate virtual ripples in a pond or ripple tank. Observe persistent sinusoidal pulses and waveguides.

    ★ 4.513 ratingsEducationFreeData updated 2026-09-08
  6. Mil Fuel Check app icon

    Mil Fuel Check

    PhoenixFlightSoftware, LLC

    Track reserves and set alerts

    Track consumption with adjustable reserve times and bingo settings. Set custom pop-up notifications. Switch between Green and Black UI themes. Adjust external tank parameters. Calculate usage down to the pound with rounding options.

    ★ 4.321 ratingsProductivity$4.99Data updated 2026-09-12

How we rank alternatives

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