Comparison

NVS Tsunami Evacuation vs Bontub

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

Head to head
About

NVS Tsunami Evacuation

This app displays tsunami evacuation zones along the Oregon and Washington coast. It allows users to map their home, work, or school to see if they are in a hazard zone and plan evacuation routes. It also shows critical locations like schools and government buildings.

Highlights
  • Tsunami evacuation zone maps
  • Location mapping (home, work, school)
  • GPS and address-based route planning
  • Critical facility locations
  • Tsunami warning bulletins
  • State agency data
Features
Read full description

* Oregon and Washington tsunami evacuation zone maps developed by the Oregon Department of Geology and Mineral Industries (DOGAMI) and the Washington Department of Natural Resources (WADNR) * NVS Tsunami app developed by the Northwest Association of Networked Ocean Observing Systems (NANOOS) NVS Tsunami provides you an at-a-glance view of where the tsunami hazard zones are along the Oregon and Washington coast, and allows you to map whether your home, work, school, etc. is located in a tsunami evacuation zone or not. To help you develop and plan your own evacuation routes, NVS Tsunami enables you to save your current position or points of interest via GPS or address look-up. As an important tool in preparing for a potentially catastrophic local or distant tsunami event for residents or visitors to the Pacific Northwest coast, NVS Tsunami also displays the locations of places that will be of critical importance prior to, during, and following a tsunami event, including schools, bridges, assembly areas, and various local government buildings. Features: o Up-to-date tsunami information published by Washington and Oregon state agencies and emergency managers, including evacuation zone maps, location of features of interest, and additional tsunami information for the public o Access to the most current tsunami warning bulletins from the West Coast and Alaska Tsunami Warning Center o Find a location by either address or GPS

About

Bontub

Features
Read full description

Bontub is a rental management system designed to provide property owners and tenants new way to manage their day-to-day operations. - Record keeping: The system automatically records invoices, payments, etc. for you and provide comprehensive reports. - All-In-One Management: Owners and managers can manage all rental properties in a single system. - Timely Notification: Tenants receive notification directly to their phones regarding any updates as well as invoice to be paid. - Quality of Service: Improve quality of services by responding promptly to tenant requests and communicate better via the system.

Screenshots

NVS Tsunami Evacuation4 screens
Bontub3 screens

Verdict

The call

The clearest difference is update cadence: Bontub at every 5 weeks against NVS Tsunami Evacuation's every 3 months. Bontub also leads on iOS requirement (11.0 vs 16.6). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

NVS Tsunami Evacuation ships an update every 3 months, Bontub every 5 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
NVS Tsunami Evacuation versus Bontub: the parameters behind the verdict, then further details
ParameterNVS Tsunami EvacuationBontub
PriceFreeFree
Rating3.5 (19 ratings) — better—
Positive reviews44.4% of reviews—
Number of ratings19 — better—
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.611.0 — better
Further details — not scored
Size7 MB52 MB
Age rating4+4+
DeveloperNANOOS-IOOSASSOCIATIONPolygram Solution Co., Ltd.

In-app purchases

None

NVS Tsunami Evacuation

No in-app purchases

None

Bontub

No in-app purchases

Questions

Is NVS Tsunami Evacuation free?
NVS Tsunami Evacuation is free to download, with no in-app purchases.
Is Bontub free?
Bontub is free to download, with no in-app purchases.
Do NVS Tsunami Evacuation or Bontub have ads?
Neither NVS Tsunami Evacuation nor Bontub shows ads.
Which is updated more often, NVS Tsunami Evacuation or Bontub?
NVS Tsunami Evacuation ships an update every 3 months, and Bontub every 5 weeks. Most recently, NVS Tsunami Evacuation was updated on November 1, 2026 and Bontub on November 3, 2026.

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