Let people contact you for the right thing

Are you free? Tell them.

Allow a larger group of friends to know what plans are in your mind.

Chat with people reacting to your availability.

Your friends will know your availability in the chats.

Screenshot of the shared calendar of Twelve.

What is Twelve?

A secured and shared calendar app for friends and family

Twelve app, friend's list.

your available friends

Just write a message linked at a time and let your interested friends react to it. Instantly chat with the right people, available at the same time as you, plan activities, see your friends and build a strong social interaction.

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Twelve: my app beta tested by people of Reddit is now live! 🎉 from r/SideProject
One year after my first app release! Twelve 🚀 from r/androidapps
I have released my first app! Twelve from r/androidapps

How does it work?

The timetable of Twelve used to share availability.

From the Google Play Store, download the app:

Twelve - Reach Available Contacts

The timetable of Twelve used to share availability.

Just pick your name and profile picture (optional).

Registration with no phone number, no email, no signup.


Easily add your friends by copying/pasting your friends list link in any chat or social media post.

Once your friends click on it, you will become friends in the app automatically.

Scheduling activities with Twelve.

Write a message and drag it at the time you want.

Share your plans and when you are available in your calendar. Twelve is a social app allowing you to plan your free time by leaving a message, linked with time, that your friends are free to see.


Publish your availability for larger groups. Reach everbody you want at once.

Twelve works perfectly with friends you would like to see more but with who you don't often chat. Or with friends you chat too much with before you have a plan.

Twelve messages used to plan and easily meet friends.

Get contacted and see your available friends.

Direct and private messaging allows your friends to react to your availability to see you. Never miss opportunities again, chat with the people you love, and also reconnect with old ones at the right moment to plan activities.

icon Twelve now
12 contacts available today

Get notified once your friends are free to see you.

Find friends who are free and chat with the right people to plan meetings or join them at the right moment.

A silent notification, meaning that it doesn't make any sound or vibration, is designed to keep you informed of how many friends will be available to do something with you.

By clicking on that notification, the app opens, and the user can chat about any availability.

Twelve aims to simplify communication between friends, family, or colleagues around real plans that are usually unknown.

Available for

What are you doing?

- Hey, what’s up? What are you doing today?

The problem with that question “What are you doing?” is that we ask it almost every day to the people we care about (if you haven’t given up yet, or if someone else does it in your group).

When we want to plan something with friends and family, it’s usually the first question we ask them if we go straight to the point.

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Easily get an overview of all your available friends.

The list of available friends allows the users of Twelve to contact the right friend to plan a meeting.

The first goal of Twelve is to allow its users to find and see friends most easily and naturally.

Meet at the right moment

Don’t leave great connections to disappear with time because of a lack of communication. Use the shared calendar of Twelve to find the people who matter to you.

You are probably not aware that there are friends available at the same time as you. Don’t miss the opportunity. Plan great moments with your friends, family, and colleagues.

Welcome to Twelve!
ensured by
end-to-end encryption

End-to-end encryption secures the app Twelve.

Such security is one feature of Condensation, a data system used for Twelve. It is a general-purpose distributed data system with conflict-free synchronization and inherent end-to-end security.

Privacy protected

Data is encrypted and decrypted into the app by the use of a private and unique safety key for each user. It is protected during all exchanges even if the network is compromised.

Fluid experience

Condensation uses a distributed architecture. Queries are shared between several independent servers for efficient data transfer. This process ensures the fluidity of the network and minimal loading time for users.

Low battery and data consumption

Data is seamlessly synchronized into the application to optimize treatment. Only changes are transferred through the network to minimize the quantity of exchanged queries.

Share link

Share your link id to add friends.

Twelve provides you a unique link that you can copy and paste anywhere you want to share it with your friends.

By clicking on it, the app opens, and you both are on each other friend's list.

Such a system allows any user of Twelve to jump above the classical adding/accepting step when creating a friend's list.


Twelve is a free chat app without a phone number nor login.

Twelve is a new chat app, free and secure, that is allowing every user to use the app without phone number nor any signup, log in.

Once installed, the users can choose their username and pick one picture (optional) while remaining anonymous if desired.

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Set the right time
and change it effortlessly

A scheduling app with simple interactions.

Too busy to take news? Twelve allows its users to keep in touch with their friends...