Comparison

Seismometer ∞ vs VibraScope

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

Head to head
About

Seismometer ∞

Features
Read full description

Seismometer ∞ — earthquake detector, vibration meter, and seismograph in your pocket. Turn your iPhone into a precision seismometer and vibration meter. Detect tremors, monitor seismic waves, and visualize ground motion in real time. • Real-time seismograph visualization with precision charts • Track X, Y, Z axis vibration readings with detailed graphs • Monitor earthquake tremors and ground movement • Professional-grade sensitivity for reliable measurements • Clean, intuitive interface for easy data interpretation Perfect for earthquake awareness, physics experiments, scientific research, and education. Whether you're a researcher, student, or curious explorer, discover the hidden world of seismic activity. Privacy Policy: https://www.icloud.com/pages/0bcX7C5KVMC35FbMWk-FNfjWg Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

VibraScope

Features
Read full description

VibraScope turns your phone into a vibration meter and seismograph — measure shaking, engines, appliances and floors with the motion sensor already in your pocket. It looks and feels like a classic paper chart recorder: a live analog needle gauge, three seismograph-style ink traces (X/Y/Z), and readouts stamped like an instrument plate. Warm paper theme by day, amber night-instrument theme in the dark. MEASURE WITHOUT INTERRUPTIONS • No full-screen ads on the measuring screen — your reading never gets wiped mid-measurement • Remove ads with a single one-time purchase, forever WHAT YOU GET • Live analog needle gauge with color-coded intensity zones • 3-axis seismograph traces or a single magnitude trace — your choice • RMS, peak and session-max acceleration in m/s² or g • Estimated shaking intensity (MMI scale, I–XII) • Dominant vibration frequency in Hz • Zero calibration and hold • Save measurements with title and notes, review them anytime • Export charts as images (high-resolution available) or data as CSV • Works on both phones and tablets • 8 languages Everything is measured and stored on your device — no account, no sign-up, and the motion sensor needs no permission at all. Great for checking washing machines and engines, monitoring workshop tools, testing floors and shelves, classroom physics, or simply seeing every little tremor around you drawn in ink. Note: readings are estimates from consumer phone sensors and do not replace calibrated instruments or official seismic monitoring.

Screenshots

Seismometer ∞2 screens
VibraScope3 screens

Verdict

The call

The clearest difference is in-app purchases: Seismometer ∞ at none against VibraScope's 1. VibraScope's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, update cadence and ads there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VibraScope sells 1 one-off in-app purchase. Seismometer ∞ asks for nothing beyond the download.

UpkeepUpdate frequency

Seismometer ∞ ships an update every 2 weeks, VibraScope fortnightly. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 3 level
Seismometer ∞ versus VibraScope: the parameters behind the verdict, then further details
ParameterSeismometer ∞VibraScope
PriceFreeFree
Update frequencyEvery 2 weeks — betterFortnightly
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size16 MB90 MB
Age rating4+4+
Developer辰巳家有限公司SEONYONG LEE

In-app purchases

None

Seismometer ∞

No in-app purchases

1 purchases

VibraScope

One-time1
  • Remove Ads$4.99

Questions

Is Seismometer ∞ free?
Seismometer ∞ is free to download, with no in-app purchases.
Is VibraScope free?
VibraScope is free to download, with in-app purchases available.
Do Seismometer ∞ or VibraScope have ads?
Both Seismometer ∞ and VibraScope show ads.
Which is updated more often, Seismometer ∞ or VibraScope?
Seismometer ∞ ships an update every 2 weeks, and VibraScope fortnightly. Most recently, Seismometer ∞ was updated on October 14, 2026 and VibraScope on October 15, 2026.

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