# WhereTo by IdeasQuantified vs HydraAtlas

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.

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.

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.

## The numbers

| Metric | WhereTo by IdeasQuantified | HydraAtlas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/hydraatlas/id6749492232/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | — | Free |
| Size | 83 MB | 17 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Frank Gammon](https://appshunter.io/developer/1777095522) | [Kevin Bullock](https://appshunter.io/developer/1504358834) |

## What reviewers say

### WhereTo by IdeasQuantified

[App page](https://appshunter.io/ios/app/whereto-by-ideasquantified/id6737565059)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WhereTo Pro | $9.99 | per month |
| AI Chat Boost 250 | $1.99 | one-time |
| AI Voice Boost 50 | $1.99 | one-time |


### HydraAtlas

[App page](https://appshunter.io/ios/app/hydraatlas/id6749492232)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*