RFLossIOS vs MeterWorks Vibrometer

RFLossIOS helps you evaluate radio links between two locations on an interactive map. Set two points, search for towns, inspect the path, and view line-of-sight and terrain profiles. The app highlights possible obstacles along the route and provides RF calculations including FSPL, received power, noise floor, SNR, and link margin. It is designed for practical field-oriented link planning for VHF and higher frequencies. Obstacle and terrain sources include OSM buildings, AHN5 DSM/DTM for the Netherlands, Copernicus DEM 30m, and NASA SRTMGL1 where available. Building height data depends on the selected source and may be incomplete. FSPL calculations are intended for VHF and higher frequencies, and only when the path has no blocked LOS obstruction.

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.