# GoFly vs Crabwise

The clearest difference is update cadence: Crabwise at daily against GoFly's weekly. Crabwise also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. GoFly sells 2 in-app purchases, starting at $2.99 per month and Crabwise sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

GoFly ships an update weekly, Crabwise daily. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | GoFly | Crabwise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (13 ratings)](https://appshunter.io/ios/app/gofly-e6b-aviation-calculator/id6788937279/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 6 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Trevor Welsh](https://appshunter.io/developer/1629778950) | [Pouya Marvasti](https://appshunter.io/developer/6797565160) |

## What reviewers say

### GoFly

[App page](https://appshunter.io/ios/app/gofly-e6b-aviation-calculator/id6788937279)

This aviation calculator provides fast, accurate flight planning tools with a user-friendly interface. It offers detailed breakdowns of calculations, live wind triangle analysis, and METAR decoding. The app works offline and prioritizes user privacy with no accounts or ads.

**Highlights:** Live Wind Triangle, Detailed Calculation Breakdown, METAR Decoder, Weight & Balance Calculator, Offline Functionality, Unit Conversions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GoFly Monthly | $2.99 | per month |
| GoFly Lifetime | $14.99 | one-time |


### Crabwise

[App page](https://appshunter.io/ios/app/crabwise-e6b-flight-computer/id6813311167)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crabwise Pro | $9.99 | one-time |


## Frequently asked questions

### Is GoFly free?

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

### Is Crabwise free?

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

### Do GoFly or Crabwise have ads?

Neither GoFly nor Crabwise shows ads.

### Which is updated more often, GoFly or Crabwise?

GoFly ships an update weekly, and Crabwise daily. Most recently, GoFly was updated on October 19, 2026 and Crabwise on October 17, 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.*