# Onboard Performance Tool vs ePerf

The clearest difference is rating: Onboard Performance Tool at 3.5 against ePerf's 3.0. Onboard Performance Tool also leads on ratings volume (17 vs 2). ePerf's advantage is update cadence (every 2 months vs every 6 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Onboard Performance Tool holds the better App Store score, 3.5 against 3.0. That said, the two scores are not equally well evidenced: Onboard Performance Tool has 17 ratings behind it against 2, so its average is the more settled of the two.

Onboard Performance Tool ships an update every 6 months, ePerf every 2 months. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Onboard Performance Tool | ePerf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (17 ratings)](https://appshunter.io/ios/app/onboard-performance-tool/id584211407/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/eperf/id586166665/reviews) |
| Number of ratings | **17** | 2 |
| Positive reviews | 13.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 42 MB | 56 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [The Boeing Company](https://appshunter.io/developer/493615170) | [EMBRAER S.A.](https://appshunter.io/developer/507436833) |

## 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


### ePerf

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

This application provides pilots with real-time aircraft performance calculations for any flight phase, offline. It aims to reduce cockpit workload, save fuel through takeoff thrust optimization, and eliminate paper-based materials for a more economical and efficient flight operation.

**Highlights:** Offline flight performance calculations, Takeoff and landing performance, Reduced paper cockpit materials, Engine savings through thrust optimization, Quick performance calculations, Support for Embraer Commercial aircraft

**Features:** 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 ePerf free?

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

### Which has better reviews, Onboard Performance Tool or ePerf?

Onboard Performance Tool is rated higher. Onboard Performance Tool averages 3.5 out of 5 from 17 ratings, while ePerf averages 3.0 from 2 ratings.

### Do Onboard Performance Tool or ePerf have ads?

Neither Onboard Performance Tool nor ePerf shows ads.

### Which is updated more often, Onboard Performance Tool or ePerf?

Onboard Performance Tool ships an update every 6 months, and ePerf every 2 months. Most recently, Onboard Performance Tool was updated on October 8, 2026 and ePerf on September 30, 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.*