# Jeppesen FliteDeck Pro vs Average ISA Deviation

The clearest difference is review sentiment: Average ISA Deviation at 67% against Jeppesen FliteDeck Pro's 19%. Jeppesen FliteDeck Pro's advantage is price (Free vs $3.99) and rating (3.9 vs 3.5). On ads, in-app purchases and device support there is nothing between them.

Jeppesen FliteDeck Pro is free to download; Average ISA Deviation costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Jeppesen FliteDeck Pro holds the better App Store score, 3.9 against 3.5. That said, the two scores are not equally well evidenced: Jeppesen FliteDeck Pro has 43 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 19% of Jeppesen FliteDeck Pro's written reviews are positive against 67% of Average ISA Deviation's, so the app with the better star average is not the one people write more warmly about.

Jeppesen FliteDeck Pro ships an update every 3 months, Average ISA Deviation every 14 months. The most recent releases landed on September 25, 2026 and August 1, 2026 respectively.

## The numbers

| Metric | Jeppesen FliteDeck Pro | Average ISA Deviation |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[3.9 (43 ratings)](https://appshunter.io/ios/app/jeppesen-flitedeck-pro/id530174852/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/average-isa-deviation/id630933637/reviews) |
| Number of ratings | **43** | 2 |
| Positive reviews | 18.8% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 14 months |
| Monetization | Subscription | **Paid** |
| Size | 367 MB | 1 MB |
| Requires iOS | **16.0** | 26.1 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Jeppesen](https://appshunter.io/developer/382536359) | [Juan Mauricio Padilla Villarreal](https://appshunter.io/developer/604279584) |

## What reviewers say

### Jeppesen FliteDeck Pro

[App page](https://appshunter.io/ios/app/jeppesen-flitedeck-pro/id530174852)

This electronic flight bag application provides integrated flight folder solutions for commercial airlines. It offers advanced navigation features, fuel-saving capabilities, and enhanced situational awareness using high-quality aeronautical data.

**Highlights:** Electronic flight folder solution, Fuel savings capabilities, Improved situational awareness, High-quality aeronautical data, Performant enroute display, High fidelity airport maps, Expanded D-ATIS coverage, NOTAMs and advanced weather

**In-app purchases:** none


### Average ISA Deviation

[App page](https://appshunter.io/ios/app/average-isa-deviation/id630933637)

This utility helps professional pilots quickly calculate average ISA temperature deviation for descent planning on specific aircraft models. It simplifies manual calculations, reduces workload, and operates offline, making it ideal for cockpit use.

**Highlights:** Calculate average ISA deviation, Reduce descent planning workload, Simplify manual calculations, Offline cockpit use, Designed by a pilot

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

**In-app purchases:** none


## Frequently asked questions

### Is Jeppesen FliteDeck Pro free?

Jeppesen FliteDeck Pro is free to download, with no in-app purchases.

### Is Average ISA Deviation free?

Average ISA Deviation costs $3.99, with no in-app purchases.

### Which has better reviews, Jeppesen FliteDeck Pro or Average ISA Deviation?

Jeppesen FliteDeck Pro is rated higher. Jeppesen FliteDeck Pro averages 3.9 out of 5 from 43 ratings, while Average ISA Deviation averages 3.5 from 2 ratings.

### Do Jeppesen FliteDeck Pro or Average ISA Deviation have ads?

Neither Jeppesen FliteDeck Pro nor Average ISA Deviation shows ads.

### Which is updated more often, Jeppesen FliteDeck Pro or Average ISA Deviation?

Jeppesen FliteDeck Pro ships an update every 3 months, and Average ISA Deviation every 14 months. Most recently, Jeppesen FliteDeck Pro was updated on September 25, 2026 and Average ISA Deviation on August 1, 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.*