Comparison

WhereTo by IdeasQuantified vs HydraAtlas

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

Head to head
About

WhereTo by IdeasQuantified

Features
Read full description

WHERETO is a civic and environmental map intelligence app that helps you understand places through public data, infrastructure context, environmental layers, and AI-assisted exploration. Explore communities, cities, and regions with layered map data that makes important public-interest information easier to see. FEATURES: * Public Data Map Layers — View civic, environmental, infrastructure, and community data in one map experience * Natural Hazard Risk — Explore FEMA National Risk Index ratings for wildfire, flooding, hurricane, earthquake, heat, and more, by county and census tract * Flood Zones — See FEMA flood hazard areas, including 100-year and 500-year floodplains * Infrastructure Layers — View levee systems with FEMA accreditation context, and National Bridge Inventory bridges rated Good, Fair, or Poor, with tap-to-view details * EPA Superfund Areas — See nearby Superfund sites and environmental cleanup areas * Environmental Context — Explore air quality, lead exposure, USDA hardiness zones, weather, and related location data * Data Centers Map — View U.S. data center locations as a dedicated infrastructure layer * Civic and Political Context — Explore local civic patterns, political data, and public-interest geography * Safety Context — Review available neighborhood safety, crime, and noise data where supported * Wikipedia Context — Learn more about nearby places, landmarks, communities, and regions * Address Search — Search for addresses and locations with autocomplete * OpenStreetMap Support — Browse open map data where available * Area Briefing — Get a plain-language summary of the public-data picture around any location, and compare two areas side by side * AI Map Assistant — Ask questions about a location, by text or voice, and get contextual answers based on map layers and public data FREE ACCESS: WhereTo makes many public data layers available for everyone, including natural hazard risk, flood zones, levees and bridges, EPA Superfund areas, political context, data centers, crime data, lead exposure, air quality, hardiness zones, Wikipedia context, OpenStreetMap data, real-time weather, and address search. WHERETO PRO: WhereTo Pro unlocks enhanced AI-assisted exploration and premium features that have ongoing usage costs, including expanded AI chat, voice features, advanced analysis, and other metered capabilities. USE WHERETO TO: * Understand environmental, hazard, and civic context around a location * Research communities, cities, and regions * Explore public data visually on a map * Compare places using layered public-interest information * Learn more about infrastructure, environmental conditions, and civic geography WhereTo is built for people who want to look beyond a standard map and better understand the public data shaping the places around them. Privacy-focused: Your location data is used to power the map experience. We only collect what is necessary for account, subscription, usage, and app functionality. Terms of Use: https://www.ideasquantified.com/tos/

About

HydraAtlas

This app provides detailed flood risk information for any US location using official FEMA data. It offers real-time updates on stream gauges, weather alerts, and radar, helping users make informed decisions about potential flood hazards.

Highlights
  • FEMA flood zone mapping
  • USGS stream gauge readings
  • National Weather Service alerts
  • Interactive weather radar
  • Save monitored locations
  • Emergency preparedness info
Features
Read full description

The purpose of this app is to help inform users of where flood risk exists. You will be able to pull up official US FEMA Flood zone information and run an analysis for any location in the United States. This app primariliy depends on and uses Open Data from the U.S. Government. Therefore, it's really only applicable in the United States, for now. HydraAtlas is your comprehensive flood monitoring companion. Get real-time data from official sources, including: FEMA flood zones, USGS stream gauges, Rain Gauges, real-time Weather, and National Weather Service alerts. Key Features: Live FEMA flood zone mapping Real-time USGS stream gauge readings National Weather Service weather alerts Interactive weather radar Save important locations for monitoring Emergency preparedness information HydraAtlas combines official government data sources to help you make informed decisions about flood risks in your area. Perfect for homeowners, travelers, and anyone who needs reliable flood information. Data sources: FEMA, USGS, National Weather Service

Screenshots

WhereTo by IdeasQuantified4 screens
HydraAtlas4 screens

Verdict

The call

The clearest difference is in-app purchases: HydraAtlas at none against WhereTo by IdeasQuantified's 3. HydraAtlas also leads on update cadence (every 4 days vs every 10 days). WhereTo by IdeasQuantified's advantage is iOS requirement (15.1 vs 17.6). On price, 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. WhereTo by IdeasQuantified sells 3 in-app purchases, starting at $9.99 per month. HydraAtlas asks for nothing beyond the download.

UpkeepUpdate frequency

WhereTo by IdeasQuantified ships an update every 10 days, HydraAtlas every 4 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
WhereTo by IdeasQuantified versus HydraAtlas: the parameters behind the verdict, then further details
ParameterWhereTo by IdeasQuantifiedHydraAtlas
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 10 daysEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.6
Further details — not scored
Size83 MB17 MB
Age rating12+4+
DeveloperFrank GammonKevin Bullock

In-app purchases

3 purchases

WhereTo by IdeasQuantified

Subscriptions1
  • WhereTo Pro$9.991 Month
One-time2
  • AI Chat Boost 250$1.99
  • AI Voice Boost 50$1.99
None

HydraAtlas

No in-app purchases

Questions

Is WhereTo by IdeasQuantified free?
WhereTo by IdeasQuantified is free to download, with in-app purchases available.
Is HydraAtlas free?
HydraAtlas is free to download, with no in-app purchases.
Do WhereTo by IdeasQuantified or HydraAtlas have ads?
Neither WhereTo by IdeasQuantified nor HydraAtlas shows ads.
Which is updated more often, WhereTo by IdeasQuantified or HydraAtlas?
WhereTo by IdeasQuantified ships an update every 10 days, and HydraAtlas every 4 days. Most recently, WhereTo by IdeasQuantified was updated on November 4, 2026 and HydraAtlas on October 30, 2026.

Other comparisons