Comparison

dBMeter Pro vs White Lightning SmartGPU

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

dBMeter Pro

This application transforms your iPhone into a sound level meter for analyzing ambient noise or testing audio equipment. It offers dual-input measurement, a contextual reference guide, and long-term data logging up to 12 hours. Data can be exported for further analysis.

Highlights
  • Dual-input measurement
  • Contextual reference guide
  • Long-term data logging
  • CSV data export
  • External microphone support
Read full description

Transform your iPhone into a powerful sound level meter with dBMeter Pro. Whether you are analyzing ambient noise, testing audio equipment, or simply curious about your environment, dBMeter Pro delivers accurate decibel readings with an intuitive interface. Key Capabilities: - Dual-Input Measurement: Seamlessly switch between the iPhone’s built-in microphone for quick checks or connect external measuring microphones for enhanced precision. - Contextual Reference Guide: Don’t just read numbers—understand them. Our visual reference view compares current noise levels to real-world examples (like a library, traffic, or a rock concert) for instant context. - Long-Term Data Logging: Need to monitor noise over time? Record up to 12 hours of continuous samples. - Data Export: Easily export your sessions as CSV files for deep-dive analytics and archiving. Important Note: While dBMeter Pro has been calibrated using professional-grade equipment to ensure high accuracy, it is intended for personal and educational use only. It should not be used as a substitute for certified industrial equipment for professional or legal measurements. The author assumes no liability for damages arising from the use of this software.

About

White Lightning SmartGPU

Read 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

dBMeter Pro4 screens
White Lightning SmartGPU3 screens

Verdict

The call

The clearest difference is price: White Lightning SmartGPU at Free against dBMeter Pro's $5.99. White Lightning SmartGPU also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.6). On update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

White Lightning SmartGPU is free to download; dBMeter Pro costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

dBMeter Pro ships an update every 5 months, White Lightning SmartGPU every 3 months. The most recent releases landed on September 25, 2026 and September 13, 2026 respectively.

Scorecard3 real differences · 7 level
dBMeter Pro versus White Lightning SmartGPU: the parameters behind the verdict, then further details
ParameterdBMeter ProWhite Lightning SmartGPU
Price$5.99Free — better
Rating5.0 (2 ratings) — better—
Positive reviews56.7% of reviews—
Number of ratings2 — better—
Update frequencyEvery 5 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.614.0 — better
Further details — not scored
Size6 MB37 MB
Age rating4+4+
DeveloperMatthias SchorerAudio Authority

In-app purchases

None

dBMeter Pro

No in-app purchases

None

White Lightning SmartGPU

No in-app purchases

Questions

Is dBMeter Pro free?
dBMeter Pro costs $5.99, with no in-app purchases.
Is White Lightning SmartGPU free?
White Lightning SmartGPU is free to download, with no in-app purchases.
Do dBMeter Pro or White Lightning SmartGPU have ads?
Neither dBMeter Pro nor White Lightning SmartGPU shows ads.
Which is updated more often, dBMeter Pro or White Lightning SmartGPU?
dBMeter Pro ships an update every 5 months, and White Lightning SmartGPU every 3 months. Most recently, dBMeter Pro was updated on September 25, 2026 and White Lightning SmartGPU on September 13, 2026.

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