Apps Rush: Tiësto, Celtic FC, Facejacker, Domino's Pizza, Montessori Letter Sounds, RollingNote and more

Tiësto DJ and musician Tiësto has launched his official iPhone app, offering news, tour dates, music and social features for fans. However, if they stump up an additional £3.99 through in-app purchase, they get membership of his InTheBooth subscription scheme, and can create playlist, stream Tiësto's podcast archive and get exclusive content. iPhone Official Celtic FC Here's another example of a paid app with an additional subscription tier. Scottish football club Celtic's app costs £2.99, for which fans get news, player profiles, live text and stat updates on match-days, and other content. But if they pay an additional £2.49 a month, they get match highlights and other videos. iPhone Facejacker The app for Channel 4's new prank show includes character soundboards and a photo-booth feature, as well as exclusive videos. However, its second-screen aspects are more interesting: "Collect a variety of exclusive content by enabling your phone to listen in on the TV episodes, unlocking soundboards, ring tones, videos and more". Developer Widebeam says it's the first time a TV show has unlocked app content in this way in the UK. iPhone Domino's Pizza Domino's Pizza is spreading its crusty baked love onto another smartphone platform: Windows Phone. Its official app enables people in the UK and Ireland to browse the menu, customise pizzas with toppings, and then order from their device. Vouchers will be added in a future update. Windows Phone Montessori Letter Sounds HD Based on the Montessori teaching method, this iPad app aims to help children learn the alphabet through four mini-games, as well as a toolbox with a phonetic alphabet and sandbox to practice tracing letters. It's the work of developer Les Trois Elles. iPad Speaktoit Assistant After 1.4m downloads on Android, voice-activated personal assistant app Speaktoit is training its sights on Siri for iOS. It works on older iPhones, and uses natural language to respond to questions and find information. iPhone Inotia 3: Eternity Looking for a meaty RPG to get your teeth into on iOS? Korean firm Com2uS' Chronicles of Inotia series may be just the thing. It's just reached its third incarnation with a universal iOS app, with a deep storyline, bags of quests and a party battling system. iPhone / iPad My Magic Songs Android app My Magic Songs won an award at the AppCircus Lisbon event in 2011, and now it's available to download. It's a marvellous idea too: music mini-games for children that a.) sing the child's name (if it's in the app's 10,000-strong database) and b.) put their photo into the action. Android RollingNote RollingNote is the latest music education app to be launched for iPad. The idea: "a game that uses scrolling notes to help you learn piano". You follow what's happening on the iPad screen while playing along on an external keyboard or piano. An in-app song store sells additional tracks. iPad DJPad Android tablets get their own MP3 DJing app, enabling music files stored on the device to be mixed and scratched at will. Developer Burns Modular promises more features will be added regularly, too. Android GameStop Mobile This is only relevant for the US, obviously, but it's interesting to see what games retailer GameStop is up to in apps. It enables people to scan game barcodes in-store to get videos, reviews and screenshots, while also checking store availability and ordering online. The chain's PowerUp Rewards scheme is also built in. Android The Tiny Bang Story HD Colibri Games' The Tiny Bang Story is an iPad adventure that focuses on puzzles spread over five chapters, with beautiful hand-drawn visuals and "no text" at all. iPad The Week Magazine US There's already an app for The Week magazine in the UK, but now there's also a US version for iPad. It makes a new issue available every Friday via Apple's Newsstand service, charging people $3.99 per issue, or a $4.99 monthly subscription. iPad Doodle.ly Doodle.ly claims to be "a social sketchpad for self-expression, creativity and inspiration" – a nifty way to scribble on an iPad and then share the results with friends on Facebook and Twitter. iPad