# Estes Disaster Response vs EF1 E6B Flight Computer

The clearest difference is in-app purchases: Estes Disaster Response at none against EF1 E6B Flight Computer's 2. Estes Disaster Response also leads on ads (none vs shown). EF1 E6B Flight Computer's advantage is update cadence (weekly vs every 2 months) and device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. EF1 E6B Flight Computer sells 2 in-app purchases, starting at $3.99 per month. Estes Disaster Response asks for nothing beyond the download.

Estes Disaster Response ships an update every 2 months, EF1 E6B Flight Computer weekly. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Estes Disaster Response | EF1 E6B Flight Computer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 77 MB | 48 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SensorTransport Inc](https://appshunter.io/developer/1331871720) | [EntireFlight LLC](https://appshunter.io/developer/1895485027) |

## What reviewers say

### Estes Disaster Response

[App page](https://appshunter.io/ios/app/estes-disaster-response/id1481416116)

**Features:** Vision Pro support

**In-app purchases:** none


### EF1 E6B Flight Computer

[App page](https://appshunter.io/ios/app/ef1-e6b-flight-computer/id6763776403)

This app provides a comprehensive electronic flight computer for pilots, offering fast, offline calculations for wind, airspeed, fuel, and navigation. It includes multi-leg route planning, printable navigation logs, and weight and balance calculations.

**Highlights:** Wind triangle calculations, Time, speed, distance calculations, Fuel burn, endurance, and range, Multi-leg cross-country planning, Printable VFR/IFR navigation logs, Weight and balance calculations, Fully offline functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Annual | $19.99 | per year |


## Frequently asked questions

### Is Estes Disaster Response free?

Estes Disaster Response is free to download, with no in-app purchases.

### Is EF1 E6B Flight Computer free?

EF1 E6B Flight Computer is free to download, with in-app purchases available.

### Do Estes Disaster Response or EF1 E6B Flight Computer have ads?

EF1 E6B Flight Computer shows ads; Estes Disaster Response does not.

### Which is updated more often, Estes Disaster Response or EF1 E6B Flight Computer?

Estes Disaster Response ships an update every 2 months, and EF1 E6B Flight Computer weekly. Most recently, Estes Disaster Response was updated on October 5, 2026 and EF1 E6B Flight Computer on October 2, 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.*