# FDR Calculator vs Tower 5

The clearest difference is in-app purchases: Tower 5 at none against FDR Calculator's 2. Tower 5 also leads on update cadence (fortnightly vs every 4 months). FDR Calculator's advantage is iOS requirement (15.0 vs 18.6). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. FDR Calculator sells 2 in-app purchases, starting at $1.99 per month. Tower 5 asks for nothing beyond the download.

FDR Calculator ships an update every 4 months, Tower 5 fortnightly. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | FDR Calculator | Tower 5 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tower-5-wildfire-intelligence/id6766075348/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 35 MB | 32 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alan Richert](https://appshunter.io/developer/527055673) | [Snoflo.org LLC](https://appshunter.io/developer/1894082028) |

## What reviewers say

### FDR Calculator

[App page](https://appshunter.io/ios/app/fdr-calculator/id527055670)

Instantly calculate fire danger ratings with professional-grade algorithms. Offers real-time weather data integration, visual danger level displays, and detailed action recommendations for informed fire prevention and management.

**Highlights:** Instant Fire Danger Index calculations, Real-time weather data integration, Visual color-coded danger levels, Detailed action recommendations, Manual calculator for offline use, Automatic location detection

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weather Pro (Monthly) | $1.99 | per month |
| Enable Local Weather | Free | one-time |


### Tower 5

[App page](https://appshunter.io/ios/app/tower-5-wildfire-intelligence/id6766075348)

Understand wildfire risk with real-time data on active fires, smoke plumes, and weather warnings. Generate detailed risk profiles for any U.S. address, including historical data and future climate projections. Essential for homeowners, professionals, and anyone concerned about fire safety.

**Highlights:** Live wildfire perimeters, Satellite hot-spot detections, Fire weather warnings, Smoke plume tracking, 96-hour rainfall timeline, Property wildfire risk profiles, Historical fire data

**In-app purchases:** none


## Frequently asked questions

### Is FDR Calculator free?

FDR Calculator is free to download, with in-app purchases available.

### Is Tower 5 free?

Tower 5 is free to download, with no in-app purchases.

### Do FDR Calculator or Tower 5 have ads?

Neither FDR Calculator nor Tower 5 shows ads.

### Which is updated more often, FDR Calculator or Tower 5?

FDR Calculator ships an update every 4 months, and Tower 5 fortnightly. Most recently, FDR Calculator was updated on November 1, 2026 and Tower 5 on October 28, 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.*