# Learn Math Fast vs Rapid Response by DRI

The clearest difference is iOS requirement: Learn Math Fast at 13.0 against Rapid Response by DRI's 15.5. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Learn Math Fast | Rapid Response by DRI |
| --- | --- | --- |
| Price | Free | 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 | — | Weekly |
| Monetization | — | Free |
| Size | 46 MB | 129 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Haileslassie Lilay Desalegn](https://appshunter.io/developer/1841785547) | [Bikram Adhikari](https://appshunter.io/developer/6772282710) |

## What reviewers say

### Learn Math Fast

[App page](https://appshunter.io/ios/app/learn-math-fast-math-masters/id6757105197)

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

**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 Learn Math Fast free?

Learn Math Fast is free to download, 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 Learn Math Fast or Rapid Response by DRI have ads?

Neither Learn Math Fast nor Rapid Response by DRI shows ads.

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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.*