Wavelength: Jet Lag & Light

Wavelength: Jet Lag & Light

Land rested. Sleep on time.

2 ratings
2 reviews
Free
In-App Purchases

Details

Released
July 8, 2026
Updated
November 10, 2026

Features

Wavelength: Jet Lag & Light video #1 for iPhone
Wavelength: Jet Lag & Light screenshot #2 for iPhone
Wavelength: Jet Lag & Light screenshot #3 for iPhone
Wavelength: Jet Lag & Light screenshot #4 for iPhone
Wavelength: Jet Lag & Light screenshot #5 for iPhone
Wavelength: Jet Lag & Light screenshot #6 for iPhone
🖼️Get Icon
Icons↘︎

About

This app helps you adjust your body clock for better sleep and reduced jet lag. It uses light therapy and personalized plans based on your schedule and destination. Wake up feeling refreshed and sleep on time, every time.

✓Light therapy for sleep adjustment
✓Jet lag planning for any time zone
✓Melanopic lux light measurement
✓Personalized daily light plans
✓Wind-down reminders
✓Shift work support
Show original description
+1

What's New in Wavelength

1.11

November 10, 2026

Clearer overnight flashes. The optional flashes now explain themselves: stand your phone on its side by the bed with Wavelength open, and at the hour your plan calls for light it flashes the flashlight through your closed eyes. Leave it flat and it stays dark. • Mornings read from your steps or your watch, nothing to type • Plans around concerts, flights and mornings that cannot move • Trips start by themselves when your phone changes time zone • Melatonin timed to the published peak • Every screen in fourteen languages • The full light plan is now a subscription, free for 7 days; the light meter stays free

More
1

Subscriptions & In-App Purchases

Wavelength

Coaching for everyday sleep and jet lag.

$24.991 Year
7 Days trial
How to cancel Wavelength subscription ⁉️

User reviews

Helped a ton with jet lag issues

This app really helped me shift my internal clock on a few recent international trips. I like how easy it is to use and the various suggestions it offers. Highly recommend!!

Vibe coded and vague

The sensor reading is great, but this will spit out phrases at you like “phone down, torch aimed at your face” as if that makes sense.
After puzzling over it I THINK it means it’s going to flash my phone flashlight as a pre-wake function but there’s no explanation of whether that’s a feature, or if I can turn that off (I have a partner on a different sleep schedule than myself AND want to not have a battery drain all night)
I have to hope the AI that helped implement this app correctly applied the relevant sleep models. I guess I’ll find out if this app ends up helping me enough!
Show more

Response from developer

Really sorry the app disappointed! “Torch” is UK English that wasn’t supposed to be in the US localization, and in any case you’re right that the wording of this feature is poor. To clarify, it only activates if you leave Wavelength front and aim the phone toward your pillow and leave it plugged in. There’s a research paper to back that up, which I’ve linked to from the product web page. I’ve submitted an update to Apple that should fix this wording. I have put a lot of time into making the app help people (like me) with jet lag and hope you’ll find it works better for you! All the best, Ben

Developer apps

FAQ

How does Wavelength help with jet lag?

Wavelength creates a personalized jet lag plan for your destination, advising when to seek or avoid daylight. It also provides melatonin timing recommendations to help realign your body clock.

What kind of light does Wavelength use?

Wavelength uses brief flashes of light through closed eyes at specific times to shift your body clock. It also measures melanopic lux, the light your body clock responds to, using your iPhone's camera.

Is Wavelength suitable for shift work?

Yes, Wavelength provides hour-by-hour light plans tailored to your wake-up time, which can be beneficial for shift work and night shifts. It helps manage your circadian rhythm even with irregular schedules.

What is the cost of Wavelength?

Wavelength is free to download and offers an optional yearly auto-renewing subscription priced at $24.99. This subscription includes a 7-day free trial.

How do I cancel my Wavelength subscription?

You can manage or cancel your Wavelength subscription in your Apple Account settings. Cancellation must be done at least 24 hours before the end of the current subscription period.

What devices does Wavelength support?

Wavelength is currently supported on iPhone devices. It was released on July 8, 2026, with the latest version being 1.11 updated on November 10, 2026.

Does Wavelength have ads?

No, Wavelength does not contain advertisements. The app is free to download and offers a freemium model with an optional subscription for full features.

What is the age rating for Wavelength?

Wavelength has an age rating of 4+. It is designed to support sleep and circadian alignment and does not diagnose or treat any medical conditions.