Technologies
This New App Wants to Help You Track Your Sun Exposure
The Sun Day app, just out in beta, will prompt you on how to prep for being out and about.

The founder of Twitter, Jack Dorsey, has a bright idea that he’s released as a beta app for iPhones: Sun Day, for tracking your exposure to the sun.
The app is free to testers and so far contains basic information such as sunrise, sunset and the UV index in order to assess a user’s potential burn-limit time and, as the app description says, «track your Vitamin D from the sun.» Dorsey is currently testing UI updates and a solar noon notification, according to the app notes. In the app, users can describe the type of clothing they’re wearing, such as shorts and T-shirts or swimwear, and their Fitzpatrick skin type, which classifies how quickly they’ll burn.
People tend to think about sun exposure and protections like sunscreen most during the summer, when the sun is strongest and the days are long, and when they’re heading to the beach or out gardening, golfing or otherwise getting in quality sun time.
The iOS app asks permission to connect to some Apple Health data when the app is installed.
Dorsey announced an iOS Test Flight app, Sun Day, on Sunday, with a post on X (former Twitter).
Dorsey also recently released Bitchat, a private messaging client that uses Bluetooth as its communication platform. Although it’s meant to be a secure, private app, some users have flagged Bitchat for potential security flaws that are still being tested.
Should you try Sun Day?
For iOS users, using Sun Day involves downloading the TestFlight app from the App Store and then following the link to the app for Sun Day to join the beta test.
The effectiveness of an app such as Sun Day depends on giving it accurate information about your skin type and clothing, and while vitamin D levels are one way to gauge UV exposure, it’s not foolproof given that some people also take vitamin D supplements.
«Jack Dorsey’s new app Sun Day is exciting, not to detect vitamin D levels but really to help us understand our UV index which is so important in sun safety,» said Tanya Kormeili, an LA-based dermatologist. The risks of too much sun exposure include sunburns, aging skin and skin cancer. Tracking UV levels is one way to help mitigate those risks.
«The app does have an interesting promise as far as I am concerned, in that using the UV index can show you the risk for the level of UV exposure,» Kormeili says. «Sometimes it is hard for patients to be convinced that there can be an excessive UV risk on a cloudy day. The app would provide an objective measure of that UV index and guide you in safer sun practices.»
The dermatologist suggests that Dorsey putting the app out for public consumption without medical experts endorsing it might be a missed opportunity. «I am surprised that they have not involved actual dermatologists in pointing out the true value and limitations of this app,» she said.
Technologies
Elon Musk Says Starlink Could Replace Your Cellphone Carrier
Technologies
WWE 2K25 Jumps From the Top Rope Onto PlayStation Plus in September
Subscribers will also be able to play a turn-based strategy Persona game.

«The American Nightmare» Cody Rhodes, son of one of the greatest pro wrestlers of all time, «The American Dream» Dusty Rhodes, is the current undisputed WWE champion. And PlayStation Plus subscribers can bring Rhodes down a peg or help establish a new wrestling dynasty with the champion beginning on Sept. 16 in WWE 2K25.
PlayStation Plus is Sony’s version of Xbox Game Pass, and it offers subscribers a large and constantly expanding library of games. There are three PlayStation Plus tiers — Essential ($10 a month), Extra ($15 a month) and Premium ($18 a month) — and each gives subscribers access to games. However, only Extra and Premium tier subscribers can access the PlayStation Plus Game Catalog.
Here are all the games PS Plus Extra and Premium subscribers can access starting on Sept. 16. You can also check out the games all PS Plus subscribers can play in September, including Psychonauts 2.
Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.
WWE 2K25
Take control of your favorite superstar from the men’s and women’s divisions in this knockdown, dragout wrestling game. Become one of over 300 wrestlers from today and years past, like Rhea Ripley and Andre the Giant. This entry in the series also introduces intergender wrestling matches, barricade diving and new brawl environments where you can get over or turn heel.
Persona 5 Tactica
Join the Phantom Thieves in this real-time strategy game set in the Persona universe. You and the group wander into a bizarre realm where people are living under tyrannical oppression, and you cross paths with a revolutionary named Erina. Now you’re in cahoots with the rebels as you try to free an oppressed people and find your way back home.
Other games on PS Plus
Those are a few of the games Sony is bringing to PlayStation Plus, and subscribers can play these games as well starting on Sept. 16.
*Premium subscribers only.
For more on PlayStation Plus, here’s what to know about the service and a rundown of PS Plus Extra and Premium games added in August. You can also check out the latest and upcoming games on Xbox Game Pass and Apple Arcade.
Technologies
Little Nightmares 3 Hands-On: a Creepy Co-Op Game Arriving Just in Time for Halloween
The sequel adds cooperative play with all the haunting hallmarks of the earlier games.

After about an hour playing Little Nightmares 3, I’d used a person’s bisected halves to solve a puzzle, gotten a high score in a carnival shooting game and escaped the murderous claws of a deranged baby. As a 2-foot-tall youth trying to survive the morbid dangers of one demented area after another with my co-player, I was terrified and delighted.
I’ve only sampled the first two Little Nightmares games, but in my brief preview of Little Nightmares 3, it felt like a refined version of the series’ premise: small protagonists endangered by a large, grim world filled with traps to evade, puzzles to solve and horrid, lethal enemies to outwit. Take the scale of the animated horror movie 9, mix it with the darkest of stop-motion director Henry Selick’s maudlin settings and let players enjoy the haunting ride, room by perilous room.
This time, players aren’t alone. In Little Nightmares 3, developed by Supermassive Games, two players (or one and an AI companion) choose between characters Low (a bird-masked boy with a bow) and Alone (a girl with a jumpsuit and a wrench), who rely on each other and get out of rooms using their unique tools or just good ol’ fashioned teamwork. Sometimes this means pushing a box for the other to jump on, but other obstacles require rather complex puzzle-solving.
In the game, Low and Alone seek to escape the bleak Nowhere and its roulette of dystopian lands. My preview was limited to one of these areas — Carnevale, a demented circus where our small characters had to sneak under the feet of grotesque, ambling workers (or their corpses, tied up or swinging for the sport of their fellows). When we thought we were safe, possessed puppets sprinted after us until we could team up to knock their wooden heads off and crush them. Being noticed by anyone meant our demise, requiring frantic cooperation amid the anxious stakes of rather gruesome deaths.
It’s this tension and the dour setting that sets Little Nightmares 3 apart from other co-op games like the more excitable and dynamic Split Fiction released earlier this year, a rollercoaster flipbook of game genres that made for a breathless if not terribly coherent experience. In contrast, the section of Little Nightmares 3 I played unfolded like a series of grim vignettes that rely on its pleasingly goth trappings as much as working together with your friend (or computer teammate) to progress.
Surviving your little nightmares
While I got only an hour with the game, Little Nightmares 3 seems to iterate on rather than innovate away from its predecessors: Expect more of the same in new, grotesque settings, just with the welcome addition of tightly designed teamwork dynamics. For fans of the series, this is likely a good thing. There’s not much else like Little Nightmares.
The Carnevale stage I played through opened up with rain pelting red-and-white circus tent tops, which I as the masked Low (and someone from Bandai Namco who kindly played as the jumpsuit-wearing Alone) skittered between. Lumbering above us were brutish factory workers seeking escape at the funfair, which very quickly turned sinister as we very shortly saw some hanging tied-up as others took turns beating them like a piñata. We entered one room to find one worker in connected boxes as the subject of a magician’s saw-in-half trick…which was no trick, as we had to separate the halves to climb out of a window. I tried, and failed, to ignore the viscera slopping out of the boxes.
While we hid from the human-size enemies, we had to fight the wooden puppets. Like Geppeto’s most horrid creations, they ambushed us in several rooms, requiring me to knock their heads off with Low’s bow and run away from their decapitated bodies while my teammate rushed forward to crush their heads with Alone’s wrench.
But most of the rooms are about solving puzzles, which could be as simple as moving a box for my teammate to jump up and pull a switch or figure out how a radio plays into a complex solution. While these quiet moments are a nice break from the tense combat or pursuit, they also give time to appreciate the macabre backgrounds: I ran past one room with a circle of empty tall chairs only to come back a few seconds later to find them filled with puppets, unmoving but watching.
And then there are the really, really tense moments. We moved from the carnival to the adjoining candy factory (apparently where all those brutes work) and up to the offices where the boss works, to find him asleep with the TV droning on in the darkness…and his frankly hideous baby nestled next to him. Naturally, we had to make noise, cranking open a grate, awakening the terrifying spawn who ran after us. After many, many failed escapes, my teammate and I discovered we had to scramble for a hiding place after making it past the grate.
This was perhaps the most frustrating part of the preview as we panicked looking for a solution to our deadly woes (as opposed to the slow, methodical gameplay earlier) — but that’s part of the tension, especially when adding a teammate to the mix. Ultimately, it was a hard-won lesson in patience. In the next room, a kitchen, the nightmarish baby banged a bowl on the table until the father walked over to a corpse (presumably his worker) and cut out some meat for his ghoulish child to eat.
In my short time with it, Little Nightmares 3 seems like a cooperative spooky storybook for players and their friends (but not couch buddies, sadly — it’s online co-op only) to experience. How much it lives up to previous games in the series, especially as developer Supermassive Games takes more of the reins from the franchise’s original creators Tarsier Games, is anyone’s guess. (Tarsier’s similar spiritual sequel to Little Nightmares, Reanimal, is coming in 2026.)
But as the air turns crisp and Halloween beckons, it’s the best time of the year for a creepy co-op game like Little Nightmares 3 to land.
Little Nightmares 3 comes out Oct.10, 2025, for PC, PS4, PS5, Xbox One, Xbox Series X/S, Nintendo Switch and Nintendo Switch 2.
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