Comparison

TornadoSpyLite vs Tsunami US

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

Head to head
About

TornadoSpyLite

Instantly report and view tornado sightings worldwide using advanced technology. Get real-time alerts and track storm movements on a map, with user-submitted photos and notes. This app helps users receive timely information to stay safe during severe weather events.

Highlights
  • Track tornado movement worldwide
  • Report nearby tornadoes instantly
  • View official National Weather Service reports
  • Share and view tornado photos
  • Write storm report notes
  • Rate user-submitted sightings
  • AccuSpy™ accurate storm spotting
Features
Read full description

TornadoSpy with AccuSpy™ technology gives you the power to report and view official and user spotted tornadoes instantly. On 5/10/10, a TornadoSpy user spotted the Oklahoma City tornado 20 MINUTES before the NOAA report, which gave other TornadoSpy users valuable lead time to escape the storm. This is a frequent occurrence since user reports are submitted and viewable immediately. Sightings are filtered through state-of-the art AccuSpy™ technology to prevent false alerts and only send you the most accurate sightings. Features: - Track tornado movement worldwide on the built-in map - Report nearby tornadoes with a simple touch - Includes official reports from National Weather Service storm spotters - Share and view tornado photos in seconds - Write storm report notes - Users can rate sightings submitted by other users - AccuSpy™ state-of-the art storm spotting Download now, and become a part of the fastest and largest worldwide storm spotting network. Demo video can be seen at justintimeapps.com/ts.html Try out this ad-supported version for free. Check out these other apps from justintimeapps: HailSpy TornadoSpy+ TornadoSpyHD+ (iPad version) CoordCalc

About

Tsunami US

This app helps users understand their tsunami risk by providing inundation maps for the US West Coast and Hawaii. It offers information on tsunami warnings, preparedness, and links to relevant authorities.

Highlights
  • Tsunami inundation maps
  • Risk assessment for US West Coast
  • Risk assessment for Hawaii
  • Tsunami warning information
  • Preparedness guidance
  • Links to authorities
Features
Read full description

Tsunamis are amongst the deadliest natural disasters. Eighty percent of all tsunamis occur in the Pacific threatening in particular US' West Coast and Hawaii. Is your home located in a potential tsunami inundation zone? Is your workplace, your children's school, your favorite recreation spot or restaurant? Do you want to learn about tsunami warnings and how to prepare for the worst case? Tsunami - US West Coast contains the available tsunami inundation maps for California, Oregon, Washington State, and Hawaii and helps you to know your tsunami risk. It helps you to know whether you are located in a tsunami inundation zone and comes with a lot of information around tsunamis warnings, preparedness, and relevant links to authorities.

Screenshots

TornadoSpyLite4 screens
Tsunami US4 screens

Verdict

The call

The clearest difference is in-app purchases: Tsunami US at none against TornadoSpyLite's 3. Tsunami US also leads on review sentiment (50% vs 32%) and update cadence (every 3 months vs every 7 months). TornadoSpyLite's advantage is rating (3.3 vs 2.8). On price, ratings volume, ads 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. TornadoSpyLite sells 3 one-off in-app purchases. Tsunami US asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

TornadoSpyLite holds the better App Store score, 3.3 against 2.8. Both are backed by a comparable volume of ratings — 27 and 17 respectively. Written reviews complicate that: 32% of TornadoSpyLite's written reviews are positive against 50% of Tsunami US's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

TornadoSpyLite ships an update every 7 months, Tsunami US every 3 months. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
TornadoSpyLite versus Tsunami US: the parameters behind the verdict, then further details
ParameterTornadoSpyLiteTsunami US
PriceFreeFree
Rating3.3 (27 ratings) — better2.8 (17 ratings)
Positive reviews32.4% of reviews50.0% of reviews — better
Number of ratings27 — better17
Update frequencyEvery 7 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.09.0 — better
Further details — not scored
Size24 MB41 MB
Age rating4+4+
DeveloperJustin TimeMatthias Hackl

Customer experience

TornadoSpyLite

All ratings27 ratings
Positive51.9%
Neutral11.1%
Negative37.0%
Written reviews37 reviews
Positive32.4%
Neutral8.1%
Negative59.5%

Tsunami US

All ratings17 ratings
Positive41.2%
Neutral17.6%
Negative41.2%
Written reviews8 reviews
Positive50.0%
Neutral12.5%
Negative37.5%

In-app purchases

3 purchases

TornadoSpyLite

One-time3
  • Extreme Weather Radio$0.99
  • Ad Remover$0.99
  • Fast Animated Radar (US)$0.99
None

Tsunami US

No in-app purchases

Questions

Is TornadoSpyLite free?
TornadoSpyLite is free to download, with in-app purchases available.
Is Tsunami US free?
Tsunami US is free to download, with no in-app purchases.
Which has better reviews, TornadoSpyLite or Tsunami US?
TornadoSpyLite is rated higher. TornadoSpyLite averages 3.3 out of 5 from 27 ratings, while Tsunami US averages 2.8 from 17 ratings.
Do TornadoSpyLite or Tsunami US have ads?
Neither TornadoSpyLite nor Tsunami US shows ads.
Which is updated more often, TornadoSpyLite or Tsunami US?
TornadoSpyLite ships an update every 7 months, and Tsunami US every 3 months. Most recently, TornadoSpyLite was updated on October 22, 2026 and Tsunami US on October 24, 2026.

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