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

Popular Stories

iPhone SE 4 Vertical Camera Feature

iPhone SE 4 Rumored to Use Same Rear Chassis as iPhone 16

Friday July 19, 2024 7:16 am PDT by
Apple will adopt the same rear chassis manufacturing process for the iPhone SE 4 that it is using for the upcoming standard iPhone 16, claims a new rumor coming out of China. According to the Weibo-based leaker "Fixed Focus Digital," the backplate manufacturing process for the iPhone SE 4 is "exactly the same" as the standard model in Apple's upcoming iPhone 16 lineup, which is expected to...
iPhone 16 Pro Sizes Feature

iPhone 16 Series Is Just Two Months Away: Everything We Know

Monday July 15, 2024 4:44 am PDT by
Apple typically releases its new iPhone series around mid-September, which means we are about two months out from the launch of the iPhone 16. Like the iPhone 15 series, this year's lineup is expected to stick with four models – iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max – although there are plenty of design differences and new features to take into account. To bring ...
bsod

Crowdstrike Says Global IT Outage Impacting Windows PCs, But Mac and Linux Hosts Not Affected

Friday July 19, 2024 3:12 am PDT by
A widespread system failure is currently affecting numerous Windows devices globally, causing critical boot failures across various industries, including banks, rail networks, airlines, retailers, broadcasters, healthcare, and many more sectors. The issue, manifesting as a Blue Screen of Death (BSOD), is preventing computers from starting up properly and forcing them into continuous recovery...
iphone 14 lineup

Cellebrite Unable to Unlock iPhones on iOS 17.4 or Later, Leak Reveals

Thursday July 18, 2024 4:18 am PDT by
Israel-based mobile forensics company Cellebrite is unable to unlock iPhones running iOS 17.4 or later, according to leaked documents verified by 404 Media. The documents provide a rare glimpse into the capabilities of the company's mobile forensics tools and highlight the ongoing security improvements in Apple's latest devices. The leaked "Cellebrite iOS Support Matrix" obtained by 404 Media...
Apple Watch Series 9

2024 Apple Watch Lineup: Key Changes We're Expecting

Tuesday July 16, 2024 7:59 am PDT by
Apple is seemingly planning a rework of the Apple Watch lineup for 2024, according to a range of reports from over the past year. Here's everything we know so far. Apple is expected to continue to offer three different Apple Watch models in five casing sizes, but the various display sizes will allegedly grow by up to 12% and the casings will get taller. Based on all of the latest rumors,...
tinypod apple watch

TinyPod Turns Your Apple Watch Into an iPod

Wednesday July 17, 2024 3:18 pm PDT by
If you have an old Apple Watch and you're not sure what to do with it, a new product called TinyPod might be the answer. Priced at $79, the TinyPod is a silicone case with a built-in scroll wheel that houses the Apple Watch chassis. When an Apple Watch is placed inside the TinyPod, the click wheel on the case is able to be used to scroll through the Apple Watch interface. The feature works...

Top Rated Comments

Bryan Bowler Avatar
86 months ago
Craig Federighi is going to love this game.
Score: 34 Votes (Like | Disagree)
UL2RA Avatar
86 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
86 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
86 months ago
“Is that guy having hemifacial spasms?”

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