Our challenge library

Beer tap dispenser API
Develop an API to manage self-service beer tap dispensers

Build a wall
Create the strongest wall of all time! Combine bricks and avoid instability!

Buon APPetito
Create an amazing app that allows your business to handle pizza orders.

E-wok
Create an online home delivery service for one of the most successful Wok restaurant chains, E-wok.

Cartfidential
Create an e-commerce shopping cart based on Blockchain, executing and storing processes in a decentralized way.

DeliverApp
Implement a web app that lets users order snacks from a pub.

Dreadful Cherry Tomatoes
Build a web app that lets users find the latest blockbuster movies.

Dreadful Tomatoes
Build a web app that lets users find the latest blockbuster movies and TV shows.

EuroVoting system
Build a new voting system with Blockchain, providing a decentralized database and ensuring the immutability of the data.

Event Emitter
Create an event emitter that lets you launch asynchronous events to teammates.

Find Four
Create an awesome Find-four game and let the users choose between playing alone or against another friend!

Firebase Chat
Create a chat application using Firebase as your backend.

Fully-connected developers API
Create an API to see if two Twitter & Github profiles are connected

Gallery Tracking Optimizer
Create an amazing gallery and optimize it based on user interest.

iBull API
Implement an API that lets users buy and sell actions on the stock market.

Memory game
Create your own Memory Card game based on pairs of cards.

Optional, a new hope
Fight against the evil Lord NullPointerException implementing your own version of the Optional (based on the Star Wars universe)

PrivaTo-Do
Create a To-Do list API where the tasks and all their history of changes are stored on a Blockchain.

RSS Reader
Create a news aggregator focused on a single industry.

Safebox API
Create a digital safe deposit box that lets users add items and keep them safe from peepers.

Spotlist API
Develop an alternative to the Spotify API that lets indie artists easily manage their playlists.

Thirst App
The webapp to quench your thirst! Order a drink, pay and done!

Twitter mirroring
Replicate Twitter feed UI in your own app by cloning its interface.

Unit converter
Create your own app to calculate the equivalence of a value in different units of measurement.

Unsafebox API
Create a digital safe deposit box that lets users add items and keep them safe from peepers.

Vending Machine with Java
Create a seamless coffee vending machine experience that replaces old-school vending machines.

Vending Machine with PHP
Create a seamless coffee vending machine experience that replaces old-school vending machines.

Vending Machine with .NET
Create a seamless coffee vending machine experience that replaces old-school vending machines.