Back to Top
C9 Companion Screenshot 0
C9 Companion Screenshot 1
C9 Companion Screenshot 2
C9 Companion Screenshot 3

About C9 Companion

C9 Companion. An all-in-one AI-powered productivity and decision-making assistant that takes care of all your grunt work.

Ask C9 to:
- Make AI-driven decisions (e.g., "Should I buy a new car?")
- Schedule events (e.g., "Set up a meeting for Friday at 2 pm")
- Take notes (e.g., "Take my notes for investor presentation")
- Count calories (e.g., " Remember Calories, I had a granola bar")
- Calculate daily calorie needs (e.g., " How many calories should I eat?")
- Show nutrients (e.g., "Show me the nutrients for granola bar")
- Track time (e.g., "Start tracking a new activity")
- Make to-do lists (e.g., "Write down my grocery list")


"C9 Companion is taking productivity to a whole new level" - Yahoo Finance

"When Evernote meets myFitness pal. C9 is the perfect AI app we didn't know we needed " - IBTimes

"This intelligent assistant and a daily planner will make you a successful CEO "- The Jerusalem Post

"Have you ever wanted to calorie count on the fly? No more juggling between apps, no more typing, no more navigating between a few dozen pages — just one app that does it all."- LA Tribune


• Ask C9 to help you make AI-driven decisions.
• C9 algorithms replicate the knowledge and reasoning methods of the experts.

• Ask C9 to collect and capture your ideas, notes, notebooks, checklists, journals, and to-do lists.
• Edit and format your notes however you'd like. Need to highlight a text or make them larger? simply hit the edit button and format your text with complete freedom.
• Access your notes across any computer, phone, or tablet.

• Ask C9 how much you need to eat to gain or lose weight.
(e.g., " how many calories should I eat in a day?")
• Ask C9 to provide calories of any food from its 1+ million food database, including international foods and cuisines.

• C9 is your ultimate daily planner and organizer.
• Ask C9 to plan events such as meetings, events, classes, holidays, weddings, and parties.
• Sync your events calendar across any computer, phone, or tablet.

• Ask C9 to track your time for various activities.
• C9 will save your tracked time in your note, and you can easily share them with your colleagues, friends, and family.

• Ask C9 for nutrient info such as calories, fat, protein, carbs, sugar, fiber, cholesterol, vitamins, and more of any food.

• Ask C9 to set up a reminder for you, through syncing your reminders with your phone’s native calendar.

• Sync your notes and events across any computer, phone, or tablet.
• Start your work on one device and continue on another without missing a beat.
• Share your notes and events with your friends, colleagues, or family.

• A free One-Time Session pass, then $9.99/Month or $84.99/Year

Subscribing to either Monthly($9.99/Month) or Annual ($84.99/Year) plan will grant you full access to all C9 functions. Payment will be charged to your App Store account at confirmation of purchase.

Your subscription will automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24-hours before the end of the current subscription period.

Automatic renewals will cost the same price you were originally charged for the subscription.

You can manage and cancel the auto-renew subscription at any time from the account settings on App Store (post-purchase), but we are unable to issue refunds for any pay periods that have already been billed.

Privacy Policy:
Terms and Conditions:

I really like checking off my daily to-do lists in C9
Darnell Lowe
Such a necessity for those who are leading a hectic lifestyle
Yang Ana
C9 really takes a lot of workload off my shoulders
Boyd Desmond