HydroTech Pocket Engineer vs MeterWorks Vibrometer

HydroTech Pocket Engineer gives field operators and engineers instant access to essential pipeline and nitrogen calculators directly from their phone. Built for real-world jobsite conditions, Pocket Engineer is designed to deliver fast, accurate results when timing, safety, and precision matter most. Whether you’re planning a job, verifying calculations in the field, or making quick decisions under pressure, this tool puts HydroTech’s proven calculation methods in your pocket. Key Features • Pipeline volume calculations for fast job planning • Nitrogen calculations for purging and testing • Clean, mobile-friendly interface built for field use • Instant access with no complicated setup • Always up to date with the latest HydroTech tools Built for the Field Pocket Engineer is designed for operators, technicians, and engineers working in pipeline testing, pre-commissioning, and field operations. It eliminates the need for manual calculations and reduces the risk of error in critical workflows. Powered by HydroTech Developed by HydroTech Testing, this app extends the same tools and methodologies used on active job sites into a simple, mobile-first experience.

Your iPhone is a surprisingly capable vibration meter — when the app is honest about it. MeterWorks Vibrometer measures, records, and hands you your raw data: no subscription, no ads, no account, no tracking. MEASURE • Live readout with a big RMS value and a smooth real-time graph • All three axes plus magnitude, 100 Hz sampling, m/s² or g • Zero adjustment to cancel sensor offset before you measure • Selectable time window (10/30/60 s) and coupling tips for clean measurements RECORD & ANALYZE • Recordings with key metrics: RMS, peak, peak-to-peak, crest factor • Zoom, pan, and cursor in the recording graph — stats recalculated for the visible range • Pro: FFT spectrum with a peak list (dominant frequencies, rpm hint) YOUR DATA IS YOURS • Free: PNG export of any graph • Pro: clean CSV export of the full raw time series — spreadsheet-ready (comma or semicolon style), shared in seconds via Mail, Files, or AirDrop • Pro: multi-page PDF report with a statistics matrix across all axes, every graph, and the spectra — plus device info and a methodology footer FREE VS. PRO — NO SURPRISES The free version is a real instrument, not a teaser: live measurement, three recordings of 10 seconds each, full metrics, PNG export. The Pro unlock is a single one-time purchase — no subscription, ever. It removes the limits: unlimited recordings of any length, CSV raw-data export, FFT analysis, and the full PDF report. Buy it once, keep it forever, including future Pro features. WHAT THIS APP CANNOT DO — HONESTLY iPhone sensors measure reliably from roughly 0.1 to 50 Hz. That covers building and traffic vibration, washing machines, pumps, fans, and 3D printers. Bearing or gearbox diagnostics and certified measurements are beyond any smartphone — apps promising that are bluffing. The in-app page "Limits of this measurement" explains exactly what works, what doesn't, and why. TYPICAL USES Document construction vibration at your home · balance a washing machine · compare pumps and fans before and after maintenance · find 3D printer resonances · monitor sensitive cargo in transit NO SUBSCRIPTION. NO ADS. NO TRACKERS. All measurement data stays on your device. Nothing is uploaded, and nothing is locked into a proprietary format — the CSV you export is yours to keep, graph, and archive. Not a physics toolbox, not a sensor grab bag: one instrument, one job, done right. MeterWorks is a family of honest measurement apps: Sound Meter for your noise log, Teslameter for magnetic fields — just as honest, just as subscription-free.