# CONVERT vs Crewler

The clearest difference is price: Crewler at Free against CONVERT's $2.99. Crewler also leads on update cadence (every 5 days vs every 3 months). CONVERT's advantage is in-app purchases (none vs 3) and iOS requirement (13.5 vs 17.0). On ads and device support there is nothing between them.

Crewler is free to download; CONVERT costs $2.99 up front. Crewler sells 3 in-app purchases, starting at $2.99 per month. CONVERT asks for nothing beyond the download.

CONVERT ships an update every 3 months, Crewler every 5 days. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | CONVERT | Crewler |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/convert-crewlounge-aero/id1056701905/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 18 MB | 26 MB |
| Requires iOS | **13.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AvioVision](https://appshunter.io/developer/568400284) | [Maurits Hulshof](https://appshunter.io/developer/1522456315) |

## What reviewers say

### CONVERT

[App page](https://appshunter.io/ios/app/convert-crewlounge-aero/id1056701905)

This aviation tool offers a comprehensive unit converter and E6B flight computer for pilots. It handles various aviation-specific calculations, including fuel, weather, and performance, across multiple languages.

**Highlights:** Unit conversion for fuel, distance, weight, and more, E6B flight computer with wind triangle calculations, Snowtam decoder for various formats, Cold temperature altitude corrections, Metric flight level conversions, Runway crosswind and obstacle climb gradient calculations

**In-app purchases:** none


### Crewler

[App page](https://appshunter.io/ios/app/crewler/id6476235242)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Annual | $17.99 | per year |
| Pro Lifetime | $44.99 | one-time |


## Frequently asked questions

### Is CONVERT free?

CONVERT costs $2.99, with no in-app purchases.

### Is Crewler free?

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

### Do CONVERT or Crewler have ads?

Neither CONVERT nor Crewler shows ads.

### Which is updated more often, CONVERT or Crewler?

CONVERT ships an update every 3 months, and Crewler every 5 days. Most recently, CONVERT was updated on November 1, 2026 and Crewler on October 26, 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.*