# ePerf vs PDC CrewConnex

The clearest difference is update cadence: ePerf at every 2 months against PDC CrewConnex's every 9 months. PDC CrewConnex's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.0 for ePerf against 3.0 for PDC CrewConnex. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

ePerf ships an update every 2 months, PDC CrewConnex every 9 months. The most recent releases landed on November 10, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ePerf | PDC CrewConnex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/eperf/id586166665/reviews) | [3.0 (4 ratings)](https://appshunter.io/ios/app/pdc-crewconnex/id1626846035/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | — | 14.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Free | Free |
| Size | 51 MB | 46 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EMBRAER S.A.](https://appshunter.io/developer/507436833) | [PDC A/S](https://appshunter.io/developer/442702631) |

## What reviewers say

### ePerf

[App page](https://appshunter.io/ios/app/eperf/id586166665)

This application provides pilots with instant aircraft performance calculations for any flight phase, offline. It aims to reduce cockpit paper, save weight, and optimize engine performance for commercial aircraft.

**Highlights:** Offline flight performance calculations, Reduces cockpit paper and weight, Optimizes engine performance, Quick performance calculations, Clean and straightforward interface, Supports Embraer Commercial aircraft

**Features:** Vision Pro support

**In-app purchases:** none


### PDC CrewConnex

[App page](https://appshunter.io/ios/app/pdc-crewconnex/id1626846035)

This app provides airline crew members with essential information and communication tools. Access your flight schedule, acknowledge changes, chat with colleagues and planners, and manage duty check-ins and document access.

**Highlights:** Roster viewing (flights, training, off days, vacation), Roster change notifications, Chat with planners and colleagues, Duty check-in, Access briefing documents, Duty swapping

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ePerf free?

ePerf is free to download, with no in-app purchases.

### Is PDC CrewConnex free?

PDC CrewConnex is free to download, with no in-app purchases.

### Which has better reviews, ePerf or PDC CrewConnex?

ePerf and PDC CrewConnex are both rated 3.0 out of 5 on the App Store, from 2 and 4 ratings respectively.

### Do ePerf or PDC CrewConnex have ads?

Neither ePerf nor PDC CrewConnex shows ads.

### Which is updated more often, ePerf or PDC CrewConnex?

ePerf ships an update every 2 months, and PDC CrewConnex every 9 months. Most recently, ePerf was updated on November 10, 2026 and PDC CrewConnex on November 3, 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.*