Rainbrow Is a New iPhone X Game You Control With Your Eyebrows

Washington University computer science graduate Nathan Gitter has released Rainbrow, an eyebrow-controlled arcade game for iPhone X.

The simple game requires players to use their eyebrows to move an emoji face up and down the screen to collect stars, worth one point each, while avoiding other emoji obstacles such as cars, basketballs, and ducks.

rainbrow
Simply raise your eyebrows to move the emoji up, frown to move the emoji down, or make a neutral expression and the emoji stays still. Note that if you raise your eyebrows, and keep them raised, the emoji will continue to move in an upwards direction, and vice verse when maintaining a frowning expression.

While there are no levels, the game gets increasingly difficult as more obstacles appear. The goal is simply to get the highest score possible, but players can only compete against themselves right now. Gitter told us that he plans to integrate Apple's Game Center for multiplayer competition in a future update.


Rainbrow is a novel concept since it's an early example of a game using ARKit, an iOS 11 framework that can detect the position, topology, and expression of a user's face in real time using the iPhone X's new TrueDepth camera system.

Gitter told us he believes there is a lot of future potential for face-based apps, especially for those that improve accessibility. He pointed us to another face-controlled game that was released earlier this week, Nose Zone, which tasks players with destroying targets by pointing at them with their nose.

Upon first opening Rainbrow, a prompt asks for permission to access the front-facing camera. As with any app, this permission can be toggled on or off at a later time in the Settings app under Privacy > Camera.

rainbrow 2
Rainbrow's privacy policy, which all apps with face tracking are required to have, says that depth data is collected only for gameplay purposes, only stored on the device locally, and only for the duration of a game session. The policy adds that depth data is never stored remotely, given to third parties, or used for any non-gameplay purposes.

Rainbrow is free to download on the App Store for iPhone X. Gitter told us he may add an optional in-app purchase to unlock new emoji characters in the future, but he does not plan on implementing ads into the game.

Gitter works at mobile app studio SwiftKick Mobile in Austin, Texas. His personal website says he's available for iOS design and development work.

Updated: Lucky Kat Studios reached out to us after we published this article to alert us about its upcoming game Wacky Face, now available for pre-order on the App Store ahead of its December 20 launch.


Wacky Face requires players to wink or open their mouth to attack enemies. Like Rainbrow and Nose Zone, the arcade game uses both ARKit and the iPhone X's new TrueDepth camera system to capture facial depth data.

Related Forum: iPhone

Top Rated Comments

Bryan Bowler Avatar
49 months ago
Craig Federighi is going to love this game.
Score: 34 Votes (Like | Disagree)
UL2RA Avatar
49 months ago
This is so dumb. Get back to work Apple.
Apple needs to get back to work because a guy that has absolutely nothing to do with Apple made a game?
Score: 14 Votes (Like | Disagree)
DakotaGuy Avatar
49 months ago
The game looks colorful except they messed up and left a chunk of black in the top red bar.
Score: 11 Votes (Like | Disagree)
iReality85 Avatar
49 months ago
“Is that guy having hemifacial spasms?”

“No, he’s just playing an iOS game.”
Score: 10 Votes (Like | Disagree)
shayneox Avatar
49 months ago
Emilia Clarke will smoke everyone on this game
Score: 8 Votes (Like | Disagree)
OldSchoolMacGuy Avatar
49 months ago
OMG IT'S A PRIVACY NIGHTMARE! EVERYONE PANIC!!!!!
Score: 7 Votes (Like | Disagree)

Top Stories

calculatorapp

iOS 11 Bug: Typing 1+2+3 Quickly in the Calculator App Won't Get You 6

Tuesday October 24, 2017 2:03 pm PDT by
A bug in the built-in Calculator app in iOS 11 is getting some major attention this week, despite the fact that it's been around since iOS 11 was in beta testing. At issue is a calculator animation that causes some symbols to be ignored when calculations are entered in rapid succession. You can try it for yourself: Type 1+2+3 and then the equals sign into the Calculator app quickly. Due to...
gradiente iphone white

Brazilian Electronics Company Revives Long-Running iPhone Trademark Dispute

Tuesday May 19, 2020 1:06 pm PDT by
Apple has been involved in a long-running iPhone trademark dispute in Brazil, which was revived today by IGB Electronica, a Brazilian consumer electronics company that originally registered the "iPhone" name in 2000. IGB Electronica fought a multi-year battle with Apple in an attempt to get exclusive rights to the "iPhone" trademark, but ultimately lost, and now the case has been brought to...
original iphone

Phil Schiller Says iPhone Was 'Earth-Shattering' Ten Years Ago and Remains 'Unmatched' Today

Monday January 9, 2017 7:15 am PST by
To commemorate the tenth anniversary of the iPhone, Apple marketing chief Phil Schiller sat down with tech journalist Steven Levy for a wide-ranging interview about the smartphone's past, present, and future. The report first reflects upon the iPhone's lack of support for third-party apps in its first year. The argument inside Apple was split between whether the iPhone should be a closed...
iphone 12 colors 2021

iPhone 12 Colors: Deciding on The Right Color

Thursday November 5, 2020 8:35 am PST by
The iPhone 12 and iPhone 12 Pro arrived last October in a range of color options, with entirely new hues available on both devices, as well as some popular classics. The 12 and 12 Pro have different color choices, so if you have your heart set on a particular shade, you might not be able to get your preferred model in that color. iPhone 12 mini and iPhone 12 The iPhone 12 mini and iPhone 12...
iPhone 13 Dummy Thumbnail 2

Full iPhone 13 Feature Breakdown: Everything Rumors Say We Can Expect

Tuesday August 31, 2021 7:50 am PDT by
With the launch of Apple's iPhone 13 lineup believed to be just a few weeks away, we have compiled all of the coherent rumors from our coverage over the past year to build a full picture of the features and upgrades coming to the company's new smartphones. For clarity, only explicit improvements, upgrades, and new features compared to the iPhone 12 lineup are listed. It is worth noting that...
omg lightning cable comparison

Security Researcher Develops Lightning Cable With Hidden Chip to Steal Passwords

Thursday September 2, 2021 6:59 am PDT by
A normal-looking Lightning cable that can used to steal data like passwords and send it to a hacker has been developed, Vice reports. The "OMG Cable" compared to Apple's Lightning to USB cable. The "OMG Cable" works exactly like a normal Lightning to USB cable and can log keystrokes from connected Mac keyboards, iPads, and iPhones, and then send this data to a bad actor who could be over a...
macbook air deals

Deals: Amazon Drops Price of 256GB M1 MacBook Air to New Low of $849.99 ($149 Off)

Friday August 27, 2021 6:16 am PDT by
Amazon today introduced new low prices on the M1 MacBook Air for both 256GB and 512GB storage options. To start, you can get the 256GB model for $849.99, down from an original price of $999.00. Note: MacRumors is an affiliate partner with Amazon. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site running. Only Silver and Gold are...
maxresdefault

New MacBook Pro Models Coming at WWDC, Suggests Leaker

Monday May 24, 2021 1:27 pm PDT by
New MacBook Pro models are coming at WWDC, according to leaker Jon Prosser who has a mixed track record when it comes to predicting Apple's plans. Subscribe to the MacRumors YouTube channel for more videos. Prosser provided no additional information, but there are new 14 and 16-inch MacBook Pro models in the works. The new MacBook Pros will feature the most radical redesign to the MacBook Pro ...
M1X MBP Feature

Leaker: Upcoming MacBook Pro to See Price Hike Over Current Model, Equal Performance Across 14 and 16-Inch Sizes

Tuesday August 24, 2021 5:28 am PDT by
The upcoming 14-inch MacBook Pro is set to be more expensive than the current 13-inch MacBook Pro and both the 14 and 16-inch models will offer the same performance, according to the leaker known as "Dylandkt." The leaker shared the information on Twitter, explaining that both of the upcoming MacBook Pro models, expected to come in 14 and 16-inch sizes, will feature the same performance due...
iPhone 13 Dummy Thumbnail 2

Kuo: iPhone 13 to Feature LEO Satellite Communications to Make Calls and Texts Without Cellular Coverage

Sunday August 29, 2021 7:39 am PDT by
The iPhone 13 will feature low earth orbit (LEO) satellite communication connectivity to allow users to make calls and send messages in areas without 4G or 5G coverage, according to the reliable analyst Ming-Chi Kuo. In a note to investors, seen by MacRumors, Kuo explained that the iPhone 13 lineup will feature hardware that is able to connect to LEO satellites. If enabled with the relevant...