FCD vs White Lightning SmartGPU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FCD
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.
- iPad-based calibration
- Bluetooth connectivity
- Control calibration parameters
- Download flight log data
- Supports TR1 engine gauges
Read full descriptionHide full description
iPad based calibration app for the Electronics International Inc line of Turboprop 2 inch round engine gauges. The FCD-TR1 adapter is a BLE (BlueTooth) device that can be plugged directly into the back of any of the TR1 instruments and then controlled by this app via a BLE (BlueTooth) connection. All calibration parameters of the TR1 are accessible via this app. In addition, recorded flight log data can be downloaded to the iPad.
White Lightning SmartGPU
Read full descriptionHide full description
The White Lightning SmartGPU™ App is a companion for the White Lightning SmartGPU™ and allows users to monitor the external power supplied to their airframe from inside the cockpit through a bonded & secure Bluetooth Low Energy connection, instead of needing to be in the line of sight of the display panel. A compatible White Lightning SmartGPU™ is required for use. +Application Features: - Displays real-time Input/Output Voltage and Current readings - Provides supply health and performance metrics through temperature readings. - Remote pause/resume control of output voltage - SmartGPU™ personalization & configuration +About the product: Designed for the needs of a wide range of general aviation aircraft, from piston-powered to mid-size business jets, the SmartGPU™ sets a new standard in power, control, safety, and convenience. The White Lightning SmartGPU™ is unique with its advanced user interface, remote operation and control via a mobile device app, and its option for full-time battery maintenance charging. Visit https://WhiteLightningGPU.com/ for purchasing information, manuals, and tips! +About Us: White Lightning is made by Audio Authority Corporation. Audio Authority is a small, creative manufacturer that looks for niche opportunities in the electronics field. Our philosophy is to do everything ourselves when possible. We also have our own engineering, sales, support, and shipping departments, all under one roof in Lexington, KY. That benefits our customers because we can more easily and quickly coordinate to solve problems and keep each other up to date. We like to keep the work here in the USA as much as possible.
Screenshots
Verdict
The clearest difference is update cadence: White Lightning SmartGPU at every 3 months against FCD's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FCD ships an update every 7 months, White Lightning SmartGPU every 3 months. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.
| Parameter | FCD | White Lightning SmartGPU |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.4 | 14.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Ross Morrison | Audio Authority |
In-app purchases
FCD
No in-app purchases
White Lightning SmartGPU
No in-app purchases
