# FDR Calculator vs SAAQIS

The clearest difference is in-app purchases: SAAQIS at none against FDR Calculator's 2. SAAQIS also leads on review sentiment (25% vs 0%) and update cadence (every 5 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

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

FDR Calculator ships an update every 4 months, SAAQIS every 5 weeks. The most recent releases landed on October 26, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | FDR Calculator | SAAQIS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/saaqis/id1279238693/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **25.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 35 MB | 60 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alan Richert](https://appshunter.io/developer/527055673) | [South African Weather Service](https://appshunter.io/developer/1680527528) |

## 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 |


### SAAQIS

[App page](https://appshunter.io/ios/app/saaqis/id1279238693)

This app provides a centralized platform for managing and accessing air quality information across South Africa. It ensures uniformity in data handling and makes validated monitoring data available to the public and other stakeholders.

**Highlights:** Air quality information management, Data access for stakeholders, Uniform data handling, Validated monitoring data, Reporting capabilities

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FDR Calculator free?

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

### Is SAAQIS free?

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

### Do FDR Calculator or SAAQIS have ads?

Neither FDR Calculator nor SAAQIS shows ads.

### Which is updated more often, FDR Calculator or SAAQIS?

FDR Calculator ships an update every 4 months, and SAAQIS every 5 weeks. Most recently, FDR Calculator was updated on October 26, 2026 and SAAQIS on October 21, 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.*