Kello app icon

Apps Like Kello for iPhone and iPad

Analyze mechanical watch precision audibly.

The app analyzes mechanical watch precision by measuring the acoustic energy released as a "tick-tock" sound. It compares this sound against the iOS system clock to display timekeeping differences.

by Coldflower Design Corp.★ 2.85 ratingsUtilities$9.99Data updated 2026-09-15

Kello screenshots

Ranked alternatives

Showing 501–520 of 1,000 ranked alternatives.

  1. Hydraulic Cylinder Calc app icon

    Hydraulic Cylinder Calc

    Tan Chia Ling

    Calculate areas and forces

    Calculate metrics such as area, volume, force, velocity, and time. Input piston diameter, pressure, and oil flow to get results for both piston and rod sides. Perform real-time calculations for extraction and retraction forces.

    ★ 5.01 ratingsUtilities$2.99Data updated 2026-09-14
  1. Pipe Fittings app icon

    Pipe Fittings

    Radin Alcira

    Reference tool for piping engineers and designers.

    The app provides a mobile reference for factory-made wrought buttwelding fittings and forged fittings. It covers various types of elbows, tees, reducers, and caps in both US Customary and SI Units.

    ★ 1.02 ratingsUtilities$3.99Data updated 2026-09-13
  2. Piping Fitting & ASME Toolbox app icon

    Piping Fitting & ASME Toolbox

    Ashvin Kevadiya

    Access pipe data and calculate engineering specs

    Access standards for flanges, fittings, and valves. Calculate pipe safe span, flexibility, and spacing. Retrieve pipe dimensions by schedule and wall thickness. View detailed and valve sizes. Use engineering calculators for precise data.

    ★ 4.65 ratingsUtilitiesFreeData updated 2026-09-06
  3. My Pocket Metronome app icon

    My Pocket Metronome

    晶 李

    Set beats and choose themes

    Set tempo with adjustable beats per minute. Choose from three themes with distinct sound effects. Enable flash or vibrate for feedback. Track practice sessions and save custom settings. Sync with devices for consistent timing during rehearsals.

    ★ 2.73 ratingsMusicFreeData updated 2026-09-06
  4. Live Spectrogram app icon

    Live Spectrogram

    Krueger Systems, Inc.

    Visualize sound frequencies over time

    Visualize sound frequencies over time with a time-frequency graph. Adjust color intensity to represent sound levels. Use for analyzing vocal tones, animal calls, and identifying household noises.

    ★ 4.86 ratingsUtilities$1.99Data updated 2026-09-08

How we rank alternatives

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