Game night, on request.
Pick one of forty starters, add your twist and play, or start from a blank page. Then keep going: “make it harder,” “give the snake a rainbow tail.”
Corollary: Everyday AI AgentiPhone
LiveCorollary
Ask once. It does the legwork.
Corollary turns big questions into beautiful little books, makes games just by talking, finds the cheapest flight and plans your week. It runs on Apple’s cloud AI. Free, no account.
Make it
Change anything. Just ask.
No menus, no settings. Say what you want different, the way you’d say it to a friend. Corollary makes the change, keeps every version and shows you what changed.
Then you say
“Add the visual juice and parallax depth/palette swap! Gogo!”
Done. The first one is still there.
Big questions, little books.
Pick a field guide, a report or a book, and name the topic. Corollary reads the sources and writes it up with chapters, pictures and every source. Pick its look, from Daylight to Midnight, and save it as a PDF. Want another chapter? Just ask.
Think it through
You choose how hard it thinks.
Leave it on Auto, or turn it up for the hard ones. Answers come from Apple’s cloud AI, or from AI right on your iPhone, free.
AutoIt decides how long to think.
Light, Moderate, DeepTurn it up for harder questions. Deep takes the longest.
Who answersApple’s cloud AI, Apple’s AI on your phone, or open models like Qwen and Gemma that you download once.
Big questionsOpen Design and it researches the whole thing into a little book, while you keep chatting.
Discover
Every answer opens a door.
Each one comes with a card: the facts, a picture, a map and where to go next. Tap one, then another.
Every topic connects.
Ask about Mount Everest and the card opens doors to the Himalayas and the eight-thousanders. Yours grows around what you explore.
Films, ready to play.
A film’s card opens on its trailer, and a song’s on its music video. Tap a suggestion to watch the next one.
The classics, free.
Read Frankenstein. Hear Mark Twain. Watch A Trip to the Moon, the whole 1902 film.
Everyday life
Made for real life.
Ask the way you’d ask a friend who always knows.
Flights, sorted.
Ask for the cheapest way to Grandma’s this week. Every fare is read and ranked, the best one first.
Prices, compared.
Name the running shoes, or snap the barcode. It reads the stores’ own sites for you.
Your week, at a glance.
Pickup, practice, pottery class, each with the weather then.
Out and about.
Menus, showtimes and hotels, straight from the source. Places nearby, and how long the drive is.
Dinner, figured out.
Thousands of recipes, built right in.
Weather, by the hour.
Straight from Apple Weather. Will it rain at pickup? Just ask.
Brands and logos shown in cards belong to their owners. Corollary is not affiliated with or endorsed by them.
Side by side
Ask the big AI apps. Then ask Corollary.
ChatGPT, Gemini, Claude, Perplexity and Grok are brilliant to talk to. Corollary is made to do things: make the game, write the book, find the fare. Free, with no account.
| Feature | Corollary | ChatGPT | Gemini | Claude | Perplexity | Grok |
|---|---|---|---|---|---|---|
| Free, with no subscription | Yes | Paid plans for more | Paid plans for more | Paid plans for more | Paid plans for more | Paid plans for more |
| Runs on Apple’s cloud AI | Yes, on iOS 27 | No | No | No | No | No |
| Answers on your iPhone itself | Yes | No | No | No | No | No |
| Shows where answers came from | Yes | Yes | Yes | Yes | Yes | Yes |
| Free classics to read, hear and watch | Yes | No | No | No | No | No |
| Counts the carbon it saves | Yes | No | No | No | No | No |
Our read of each app for iPhone, October 2026. Spot something out of date? Tell us at support@handeware.com.
Answers you can see.
Every answer is a card you can tap. Research comes back as a little book with chapters and pictures. Games play right in the chat.
Your iPhone, put to work.
Your calendar, Apple Weather and places nearby. Fares and prices, read straight from the source.
Ask once. Done.
It does the reading and shows where everything came from. Keep typing while it works; your next ask waits its turn.
Try it
Twelve things to ask tonight.
Try them in any AI app. Then try them in Corollary.
“Wing Tap”
A game, built and ready to play.
“Add the visual juice and parallax depth/palette swap! Gogo!”
Version 1.1, with what changed. The first one stays.
“Give the snake a rainbow tail”
It builds it, runs it and fixes it.
“The Hawaiian islands”
In Design, as a field guide or a book, cover and all.
“Growing mangos in Florida”
A report with chapters, pictures and every source. Save it as a PDF.
“Add a chapter on harvest season”
The new chapter, with what changed. The earlier version is kept.
“Mount Everest”
The facts, a picture and a map, with doors to the Himalayas and the eight-thousanders.
“Watch A Trip to the Moon”
The whole 1902 film, free.
“Hear Mark Twain”
His books, read aloud, free.
“Cheapest flight to Maui over spring break”
Every fare, read and ranked. The best one first, airline first.
“Kids’ soccer cleats”
The stores’ own sites, read for you, loading more as you scroll.
“What’s on my calendar today?”
Your day as cards, each with the weather then.
Apple’s cloud AI. Yours, free.
On iPhones with Apple Intelligence and iOS 27. If you reach Apple’s daily limit, your iPhone picks up right where it left off.
Eco-Savings
Lighter on the planet.
Every answer made on your iPhone is one a data center didn’t have to make. Corollary keeps count, in grams of CO₂ and in how long a coast redwood takes to breathe it back in. It counts low, on purpose.
Eco-Savings: -5.28 g CO₂e11 redwood-minutesMade in SoCal
Good to know.
The fine print, in plain words.
Apple’s cloud AINeeds iOS 27 and an iPhone with Apple Intelligence. Other iPhones answer on the phone itself.
Apple’s daily limitApple sets one. After that, your iPhone takes over: a little slower, still free. It goes back to the cloud by itself.
It can get things wrongSo it always shows where an answer came from. Double-check anything that matters.
You press sendIt can fill out a form. Booking, paying and posting are always up to you.
Where it runsiPhone, in English.
Questions, answered.
Is Corollary really free?
Yes. No account, no subscription. Games show a short ad when you make or open one, and a small banner above the board. Nothing else has ads.
Which AI answers?
On iPhones with Apple Intelligence and iOS 27, Apple’s cloud AI. After Apple’s daily limit, your iPhone takes over, and the top of the screen says which one is answering.
How is it different from a chatbot?
It goes and does the task. It checks the fares, the stores and the sources, then shows you what it found.
Can it be wrong?
It can. That’s why every answer shows where it came from. Double-check anything that matters.
Does it book or buy things for me?
No. It can fill out a form, but you always press send.
Free on the App Store.
No account. No subscription. For iPhone.