Comparison

Gravitational Force vs MeterWorks Vibrometer

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Gravitational Force

Features
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Gravity is not something we encounter every day and of which we are a part. Our Gravity Force calculator can help you to calculate the gravitational force expertly.

About

MeterWorks Vibrometer

Features
Read full description

Your iPhone is a surprisingly capable vibration meter โ€” 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 โ€ข Live readout with a big RMS value and a smooth real-time graph โ€ข All three axes plus magnitude, 100 Hz sampling, m/sยฒ or g โ€ข Zero adjustment to cancel sensor offset before you measure โ€ข Selectable time window (10/30/60 s) and coupling tips for clean measurements RECORD & ANALYZE โ€ข Recordings with key metrics: RMS, peak, peak-to-peak, crest factor โ€ข Zoom, pan, and cursor in the recording graph โ€” stats recalculated for the visible range โ€ข Pro: FFT spectrum with a peak list (dominant frequencies, rpm hint) YOUR DATA IS YOURS โ€ข Free: PNG export of any graph โ€ข Pro: clean CSV export of the full raw time series โ€” spreadsheet-ready (comma or semicolon style), shared in seconds via Mail, Files, or AirDrop โ€ข Pro: multi-page PDF report with a statistics matrix across all axes, every graph, and the spectra โ€” plus device info and a methodology footer FREE VS. PRO โ€” 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 โ€” 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 โ€” 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 โ€” 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 ยท balance a washing machine ยท compare pumps and fans before and after maintenance ยท find 3D printer resonances ยท 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 โ€” 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 โ€” just as honest, just as subscription-free.

Screenshots

Gravitational Force3 screens
MeterWorks Vibrometer4 screens

Verdict

The call

The clearest difference is in-app purchases: Gravitational Force at none against MeterWorks Vibrometer's 1. Gravitational Force also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). MeterWorks Vibrometer's advantage is update cadence (every 2 weeks vs every 6 months). On price and ads there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. MeterWorks Vibrometer sells 1 one-off in-app purchase. Gravitational Force asks for nothing beyond the download.

UpkeepUpdate frequency

Gravitational Force ships an update every 6 months, MeterWorks Vibrometer every 2 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard4 real differences ยท 2 level
Gravitational Force versus MeterWorks Vibrometer: the parameters behind the verdict, then further details
ParameterGravitational ForceMeterWorks Vibrometer
PriceFreeFree
Update frequencyEvery 6 monthsEvery 2 weeks โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS13.0 โ€” better17.0
Further details โ€” not scored
Size43 MB7 MB
Age rating4+4+
DeveloperStage CodingEmil Deak

In-app purchases

None

Gravitational Force

No in-app purchases

1 purchases

MeterWorks Vibrometer

One-time1
  • MessWerk Pro$7.99

Questions

Is Gravitational Force free?
Gravitational Force is free to download, with no in-app purchases.
Is MeterWorks Vibrometer free?
MeterWorks Vibrometer is free to download, with in-app purchases available.
Do Gravitational Force or MeterWorks Vibrometer have ads?
Neither Gravitational Force nor MeterWorks Vibrometer shows ads.
Which is updated more often, Gravitational Force or MeterWorks Vibrometer?
Gravitational Force ships an update every 6 months, and MeterWorks Vibrometer every 2 weeks. Most recently, Gravitational Force was updated on November 7, 2026 and MeterWorks Vibrometer on November 5, 2026.

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