Alarmhandler Sensor vs MeterWorks Vibrometer

Alarmhandler is like no other security system you've seen. It integrates SMS based alarm systems, IP cameras, and old phones of any make into a cohesive alarm system controlled by one app. Do you change phone regularly, then you may have old phones collecting dust? Why not put them into use using the Alarmhandler security system! The phone needs to be connected to the Internet via Wifi or GSM. Make sure that the phone is connected permanently to power and has a stable position using a phone holder of some sort. How to get started: 1) Download the Alarmhandler Sensor app on your old device and launch it - you should see a QR code 2) Download the normal Alarmhandler app on your regular phone 3) On the home screen, tap + bottom right to add a sensor of type 'Old phone' 4) Tap the scan icon to scan the QR code shown on the old phone in the sensor app 5) Finally, tap the Start button in the sensor app to launch camera surveillance Alarmhandler is built by a small team dedicated to bring security that everyone can afford. We publish frequent updates and would love your feedback. Get in touch via our homepage alarmhandler.com, our Facebook page, or tweet us @alarmhandler

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.