# FCD vs FillPass

The clearest difference is update cadence: FillPass at every 2 months against FCD's every 7 months. FillPass also leads on ratings volume (7 vs 1). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for FCD against 5.0 for FillPass. That said, the two scores are not equally well evidenced: FillPass has 7 ratings behind it against 1, so its average is the more settled of the two.

FCD ships an update every 7 months, FillPass every 2 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | FCD | FillPass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/fcd-tr1-adapter-application/id1438537309/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/fillpass-password-passkey/id6476145160/reviews) |
| Number of ratings | 1 | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 2 MB | 87 MB |
| Requires iOS | 14.4 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ross Morrison](https://appshunter.io/developer/1438537308) | [Nguyen Viet Anh](https://appshunter.io/developer/1819465883) |

## What reviewers say

### FCD

[App page](https://appshunter.io/ios/app/fcd-tr1-adapter-application/id1438537309)

This application calibrates engine gauges for turboprop aircraft using an iPad. It connects via Bluetooth to a specialized adapter plugged into the back of the gauges, allowing full control of calibration parameters and download of flight log data.

**Highlights:** iPad-based calibration, Bluetooth connectivity, Control calibration parameters, Download flight log data, Supports TR1 engine gauges

**Features:** macOS Compatibility

**In-app purchases:** none


### FillPass

[App page](https://appshunter.io/ios/app/fillpass-password-passkey/id6476145160)

Securely store and manage all your passwords and passkeys in one place. This app encrypts your data using iCloud and allows for autofill on apps and websites. Access your credentials across all your Apple devices with biometric or PIN unlock.

**Highlights:** Encrypted iCloud storage, Cross-device sync, Biometric and PIN unlock, Secure password and passkey creation, Autofill for apps and websites, Insecure password warnings

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

**In-app purchases:** none


## Frequently asked questions

### Is FCD free?

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

### Is FillPass free?

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

### Which has better reviews, FCD or FillPass?

FCD and FillPass are both rated 5.0 out of 5 on the App Store, from 1 and 7 ratings respectively.

### Do FCD or FillPass have ads?

Neither FCD nor FillPass shows ads.

### Which is updated more often, FCD or FillPass?

FCD ships an update every 7 months, and FillPass every 2 months. Most recently, FCD was updated on November 2, 2026 and FillPass on November 4, 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.*