# Crash Math Academy vs Rapid Response by DRI

The clearest difference is price: Rapid Response by DRI at Free against Crash Math Academy's $9.99. Crash Math Academy's advantage is update cadence (daily vs weekly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Rapid Response by DRI is free to download; Crash Math Academy costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Crash Math Academy ships an update daily, Rapid Response by DRI weekly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Crash Math Academy | Rapid Response by DRI |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/rapid-response-by-dri/id6772282708/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | — | Free |
| Size | 37 MB | 129 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Brian Watson](https://appshunter.io/developer/1878233504) | [Bikram Adhikari](https://appshunter.io/developer/6772282710) |

## What reviewers say

### Crash Math Academy

[App page](https://appshunter.io/ios/app/crash-math-academy/id6759629050)

**In-app purchases:** none


### Rapid Response by DRI

[App page](https://appshunter.io/ios/app/rapid-response-by-dri/id6772282708)

This app provides forensic traffic analysts and collision investigators with over 70 scientific formulas and field tools for accurate crash data analysis and documentation. It includes scene sketching, photo logging, and crash data lookups, with results exportable for reports.

**Highlights:** 70+ peer-referenced formulas, Field documentation tools, Crash data lookups, Scene diagram sketching, Photo logging with EXIF embedding, PDF report generation, Professional community forum

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

**In-app purchases:** none


## Frequently asked questions

### Is Crash Math Academy free?

Crash Math Academy costs $9.99, with no in-app purchases.

### Is Rapid Response by DRI free?

Rapid Response by DRI is free to download, with no in-app purchases.

### Do Crash Math Academy or Rapid Response by DRI have ads?

Neither Crash Math Academy nor Rapid Response by DRI shows ads.

### Which is updated more often, Crash Math Academy or Rapid Response by DRI?

Crash Math Academy ships an update daily, and Rapid Response by DRI weekly. Most recently, Crash Math Academy was updated on October 28, 2026 and Rapid Response by DRI on October 31, 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.*