# Onboard Performance Tool vs De Havilland Flight Deck

The clearest difference is device support: De Havilland Flight Deck at 3 against Onboard Performance Tool's 1. De Havilland Flight Deck also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on July 1, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Onboard Performance Tool | De Havilland Flight Deck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (17 ratings)](https://appshunter.io/ios/app/onboard-performance-tool/id584211407/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 13.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Free | — |
| Size | 42 MB | 114 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The Boeing Company](https://appshunter.io/developer/493615170) | [De Havilland Aircraft Company of Canada Limited](https://appshunter.io/developer/1503054078) |

## What reviewers say

### Onboard Performance Tool

[App page](https://appshunter.io/ios/app/onboard-performance-tool/id584211407)

This application enables flight crews and ground personnel to perform real-time performance calculations for flights. It provides fast and precise data for takeoff, landing, and weight and balance, accounting for various environmental and operational factors.

**Highlights:** Real-time performance calculations, Takeoff analysis, Landing analysis, Weight and balance information, Accounts for weather and runway conditions, Corrects for pressure variation and MEL items

**In-app purchases:** none


### De Havilland Flight Deck

[App page](https://appshunter.io/ios/app/de-havilland-flight-deck/id1503054079)

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

**In-app purchases:** none


## Frequently asked questions

### Is Onboard Performance Tool free?

Onboard Performance Tool is free to download, with no in-app purchases.

### Is De Havilland Flight Deck free?

De Havilland Flight Deck is free to download, with no in-app purchases.

### Do Onboard Performance Tool or De Havilland Flight Deck have ads?

Neither Onboard Performance Tool nor De Havilland Flight Deck shows ads.

### Which is updated more often, Onboard Performance Tool or De Havilland Flight Deck?

Onboard Performance Tool ships an update every 6 months, and De Havilland Flight Deck every 6 months. Most recently, Onboard Performance Tool was updated on July 1, 2026 and De Havilland Flight Deck on September 10, 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.*