# Lightspeed App

> Companion app for ANR headset, tracking CO sensors and personalizing audio. (iPhone/iPad app by Lightspeed Aviation.)

- Source: https://appshunter.io/ios/app/lightspeed-app/id1469234593 (this page in markdown: same URL + `.md`)
- Developer: [Lightspeed Aviation](https://appshunter.io/developer/541925734)
- Category: Utilities, Lifestyle
- Price: Free
- Rating: 3.30/5 from 49 App Store ratings · 34 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 71 MB
- Languages: American English
- Released: 2022-09-28
- Data updated: 2026-08-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/lightspeed-app/id1469234593/reviews.md

## What is Lightspeed App?

A companion app to the Lightspeed Delta Zulu ANR headset, the Lightspeed app for iOS features an array of integrated features to keep pilots and passengers safer during flight. 

Track CO Sensors for Safer Flying

The Lightspeed app allows pilots to check the CO levels in the aircraft during flight, using a CO sensor built right into the Lightspeed Delta Zulu headset. 

The sensor provides real-time smart alerts via the proprietary Kanari™ smart alert technology. Historical data can be stored, reviewed, and analyzed after use and during the flight(s).


Personalize Audio with HearingEQity™

The Lightspeed app introduces a built-in audio equalization system called HearingEQity™ designed to compensate for individual hearing loss. 

Through an automated 12-frequency hearing test taken through the app, HearingEQity sets the hearing level in each ear in a variety of frequency bands of the Lightspeed Delta Zulu headset to create an individual hearing profile and compensate for any hearing variations between ears. 

Record Conversations, Archive Flight Recordings, and More...

The Lightspeed App allows pilots to record radio conversations, playback transmissions, draw diagrams, and archive flight recordings for post-flight briefings and training.

## Key features

- Real-time CO sensor tracking
- Smart CO alerts
- Personalized audio equalization (HearingEQity™)
- Record radio conversations
- Archive flight recordings
- Draw flight diagrams

## Recent user reviews (10 of 34)

All indexed reviews: https://appshunter.io/ios/app/lightspeed-app/id1469234593/reviews.md

### 1/5 — Recording STILL doesn’t work

*2026-06-30, version 2.2.1*

I feel dumb that I didn’t read these reviews before I spent so much money on a headset.

As others have mentioned, mine won’t record using any microphone source other than the iPhone internal mic. Of course this is useless in flight.

I called support and instead of admitting this is an ongoing issue, the guy acted like it was the first time he had heard it. I jacked around with installing, uninstalling, trying different devices, turning off Bluetooth connections on my aircraft radios, sending screenshot videos back and forth to the tech support guy, etc.

I’m really ticked off that they continue advertising this function when they know darned good and well that it doesn’t work. It really makes me want to send the headset back and demand my money back even though I’m past my trial period.

People respect me and my opinions on a very well known type forum and I will be sure to share my experience with Lightspeed.

Updated to add: I see that Lightspeed has provided a response telling me to contact their support line. Believe me, I’ve spent HOURS working with their support people. I’ve completely factory reset my Garmin radios, I’ve tried 3 different iOS devices. I’ve tried their app in all 3 of my planes as well as a PC12 and a Vision Jet I sometimes fly on contract. I’ve uninstalled and reinstalled their app. Ive tried old versions of their app. I’ve sent them freaking screen grab videos of what happens when I try to use their app. Look up the definition of gaslighting and you’ll see that it was invented and perfected by Lightspeed. Their headset form factor fits my head and is more comfortable than their biggest competitor in the ANR field, but that’s the ONLY reason I still own them. The other popular brand sounds better and all their advertised functions just work. I guess that’s why I’m the only person I know who owns a Lightspeed and quite literally every other pilot I encounter uses Bose.

### 1/5 — Recording not working

*2026-06-19, version 2.2.1*

I purchased the Zulu 4 over the Bose A30 specifically for the ATC recording function since I’m starting flight lessons, but it doesn’t work. Only my voice was recorded the entire flight. I made sure to select ATC and ICS, but it isn’t working.

### 3/5 — Battery charging inaccurate

*2026-05-10, version 2.2.1*

All in all, not a great app for what is possibly a great headset

My biggest bug is the battery charging meter is not accurate at all when it’s on the charger I’ve seen it swing from 80% to 55% to 15% while charging

### 1/5 — Doesn’t work

*2026-03-10, version 2.2.1*

The headset cannot be connected to the app using Bluetooth! Their recommended app FlightLink works. So why keep marketing this app? Just remove it!

### 1/5 — Recording does not work

*2026-02-16, version 2.2.1*

As others have mentioned, the recording function does not work. This is my first Lightspeed purchase and unless they knock it off with the denial “edge case” BS it will likely be my last.

### 2/5 — Great idea, but buggy

*2026-01-27, version 2.2.1*

The recording feature is super buggy. Sometimes it doesn’t recognize the headset is plugged in so it only tries to record using the iPad microphone.  Other times it seems to stop recording for no apparent reason to me.  Somehow, I’ve ended up with a zero length recording that freezes the app anytime it’s selected. So I can’t delete it from the library view of the other recordings.

### 1/5 — Recording STILL doesn’t work

*2025-11-23*

I feel dumb that I didn’t read these reviews before I spent so much money on a headset.

As others have mentioned, mine won’t record using any microphone source other than the iPhone internal mic. Of course this is useless in flight.

I called support and instead of admitting this is an ongoing issue, the guy acted like it was the first time he had heard it. I jacked around with installing, uninstalling, trying different devices, turning off Bluetooth connections on my aircraft radios, sending screenshot videos back and forth to the tech support guy, etc.

I’m really ticked off that they continue advertising this function when they know darned good and well that it doesn’t work. It really makes me want to send the headset back and demand my money back even though I’m past my trial period.

People respect me and my opinions on a very well known type forum and I will be sure to share my experience with Lightspeed.

**Developer response:** We are sorry you continue to experience issues with recording.  The vast majority of our customers do have success with this feature, but we recognize there are edge cases where customers are not able access recording.  We understand how difficult it can be to troubleshoot issues, especially in an aircraft, and we thank you for your patience.  To assist you further, please contact our customer service team at 800.332.2421 or support@lightspeedaviation.com. Once we have your account details and serial number, we can work together to identify the best solution for your situation.

### 1/5 — App pairing is broken

*2025-09-09, version 2.2.1*

I just bought a the Zulu 4, and it won’t pair with the app. Disappointed at such a high priced product had such bad mobile support.

### 1/5 — No Comms

*2025-07-23, version 2.2.1*

Very poor app, I’m actually considering returning the Delta Zulu headset because of this poor app. I paid $1200 and the headset is worth it but the app is very poor and being a student pilot, the ability to listen back to comms is very important to me. If by chance an update is made before my return period, I’ll keep the headset.

### 1/5 — Can’t login.

*2025-03-24, version 2.2.1*

Tried resetting the password, numerous times, still can’t log on. This is ridiculous to spend $1000 and not be able to use the basic functions.

Interestingly, you can log onto the website, but not the app.

## Frequently asked questions about Lightspeed App

### What does the Lightspeed App do?

The Lightspeed App is a companion application for the Lightspeed Delta Zulu ANR headset. It allows users to monitor CO sensor levels in the aircraft in real-time, personalize audio with a hearing equalization system, and record and archive radio conversations for post-flight review and training.

### How does the CO sensor feature work?

The app utilizes a CO sensor integrated into the Lightspeed Delta Zulu headset. It provides real-time smart alerts via Kanari™ technology and stores historical CO level data that can be reviewed during and after flights.

### What is HearingEQity™?

HearingEQity™ is a built-in audio equalization system within the app. It performs an automated 12-frequency hearing test to create an individual hearing profile, compensating for hearing loss and variations between ears to optimize audio output from the headset.

### Can I record my flights with this app?

Yes, the app allows pilots to record radio conversations and archive these flight recordings. This feature is useful for post-flight briefings, training purposes, and reviewing transmissions.

### Is this app compatible with all headsets?

This app is specifically designed as a companion to the Lightspeed Delta Zulu ANR headset. Features like the integrated CO sensor and personalized audio equalization rely on the hardware capabilities of this particular headset model.

## Version history (last 5 releases)

### 2.3.0 — 2026-08-10

For Lightspeed Delta Zulu headset owners only.

This app provides:

• HearingEQity® personalized hearing profiles for hearing loss compensation.
• Carbon monoxide (CO) monitoring and historical trend data.
• Flight recording and radio communications playback.
• NEW: For exclusive, early-release Lightspeed Delta Zulu headsets, access to the Rotax ANR and Audio profile for select Rotax aircraft engines.  In the fall of 2026, the Rotax ANR and Audio Profile will be released to all Lightspeed Delta Zulu customers.

### 2.2.1 — 2025-03-10

Updated Opt In for the PSDPP (Personal Safety Data Partnership Program)
Fixed an issue where a large amount of sensor data files could cause the app to crash

### 2.2.0 — 2024-07-18

Multiple Personalized HearingEQity Profiles: You can now run through multiple HEQ tests and save them as individual profiles.
Recording Notifications: We will now provide an iOS notification if your recording stops.
Updated Audio Input Names: More clear naming for audio recording options.
Bug Fixes: Fixed issues with inconsistent recording behavior.

### 2.1.3 — 2023-12-26

- UI/UX improvements
- Updated password recovery instructions
- Bug fixes

### 2.1.2 — 2023-12-22

- UI/UX improvements
- Updated password recovery instructions
- Bug fixes

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## More apps by Lightspeed Aviation

- [FlightLink](https://appshunter.io/ios/app/flightlink/id541925731)
- [Lightspeed Aviation](https://appshunter.io/ios/app/lightspeed-aviation/id6636483867)

All apps by Lightspeed Aviation: https://appshunter.io/developer/541925734

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-11.*