Comparison

Global Seismic Data vs StayNZ

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

Head to head
About

Global Seismic Data

Features
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The official Global Seismic Data app. Earthquakes are a global hazard which pose a threat to life and cause significant business interruption and social upheaval. Protect lives and reduce recovery costs by using our Structural Health Monitoring System. Visit www.gsdhq.io for more information. App features: • Structural Health Monitoring service for our customers • View large datasets of earthquakes and aftershocks • Receive customised notifications for earthquakes • Send felt reports or ‘I am safe’ messages to family/friends after an earthquake occurs

About

StayNZ

Features
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StayNZ is your personal residency and citizenship tracker built specifically for migrants living in New Zealand. Whether you're aiming for Permanent Residency (PR) or Citizenship, StayNZ helps you stay on top of your eligibility with simple tools: • Track travel history: Log your departures and arrivals with ease. • Visual timelines: Understand your physical presence in New Zealand at a glance. • Multiple profiles: Track residency progress for your partner, kids, or anyone else in your family, all in one app. • Travel impact planner: See how a trip you're planning will affect your eligibility date before you book it. • Export travel history: Download your travel records as a PDF or CSV for visa applications or your own files. • Smart reminders: Get notified when you're eligible to apply. • Local awareness: All dates are calculated in New Zealand time. • Residency and citizenship modes: Switch based on your visa goals. StayNZ simplifies the complex residency requirements and gives you confidence in your immigration journey. Disclaimer: This app provides general guidance only. Always check with Immigration New Zealand for official rules.

Screenshots

Global Seismic Data3 screens
StayNZ4 screens

Verdict

The call

The clearest difference is in-app purchases: Global Seismic Data at none against StayNZ's 3. StayNZ's advantage is update cadence (every 6 days vs every 8 months). On price, ads, device support and iOS requirement 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. StayNZ sells 3 one-off in-app purchases. Global Seismic Data asks for nothing beyond the download.

UpkeepUpdate frequency

Global Seismic Data ships an update every 8 months, StayNZ every 6 days. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 4 level
Global Seismic Data versus StayNZ: the parameters behind the verdict, then further details
ParameterGlobal Seismic DataStayNZ
PriceFreeFree
Update frequencyEvery 8 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details — not scored
Size26 MB3 MB
Age rating4+4+
DeveloperGlobal Seismic Data NZ LimitedDang Khoa Vo

In-app purchases

None

Global Seismic Data

No in-app purchases

3 purchases

StayNZ

One-time3
  • Coffee for the Dev$2.99
  • Lunch Break Booster$7.99
  • StayNZ Super Supporter$17.99

Questions

Is Global Seismic Data free?
Global Seismic Data is free to download, with no in-app purchases.
Is StayNZ free?
StayNZ is free to download, with in-app purchases available.
Do Global Seismic Data or StayNZ have ads?
Neither Global Seismic Data nor StayNZ shows ads.
Which is updated more often, Global Seismic Data or StayNZ?
Global Seismic Data ships an update every 8 months, and StayNZ every 6 days. Most recently, Global Seismic Data was updated on October 26, 2026 and StayNZ on October 28, 2026.

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