Back to the Future Day has come and gone, but there's plenty of technology worth celebrating in the real-life 2015, including the tech that would blow Marty McFly's mind such as smartphones and tablets - so why not enliven yours with some of these great apps?
From a zany new imaging app from Instagram to a tribal-themed rival to Facebook and Twitter, there's plenty to keep your thumbs busy over the coming week.
1. Plume Air Report
Are you concerned about the quality of the air you're breathing? This app will help you schedule your outdoor activities around pollution levels as you would the weather.
Plume Air Report draws data from 11,000 sensor-equipped stations located around 30 different countries to bring you information about local nitrogen dioxide, ozone and carbon monoxide levels, rating the air quality in your area on a scale from 'fresh' to 'extremely polluted'.
The app, which originally launched in Paris with funding from the French government, recently found its way to London to monitor pollution around Blighty.
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Available on: Android, iOS, Price: Free, Publisher: Plume Labs
2. Apple News
Apple News is the iPhone maker's take on Flipboard and HTC Sense, bringing iOS users curated news content in an attractive, visual format, and learning their reading habits over time.
Content providers include Trinity Mirror, the Daily Mail, Esquire, FourFourTwo, Cosmopolitan, and Digital Spy - that's right, we're on board from day one.
Installing Apple News on your device doesn't even require a trip to the App Store as the service will wing its way to you automatically when you download iOS 9.1. Here's Apple News.
Available on: iOS, Price: Free, Publisher: Apple
3. BBC Sport
The Beeb has revamped its BBC Sport app to offer a more personalised service to iOS and Android users. It now lets you customise your experience around the sports you enjoy and the teams you follow so there's no need to miss the Rugby World Cup semis or the Manchester derby.
Cross-platform 'My Sport' features ensure that sports fans enjoy the same experience across tablet, smartphone, and on the web, and there's another new service in form of alerts.
The update is now live on iOS and Android, but Windows Phone users are being neglected for the time being. If you've got a WP handset you're probably used to that by now though, right?
Available on: Android, iOS, Windows Phone, Price: Free, Publisher: BBC
4. Betternet
Proxy servers are handy little things, whether you want to access content that is blocked in your country or circumnavigate your work's strict no Facebook policy.
Betternet is a simple solution to these problems, channelling your data through third-party servers at a single tap - no messing about with registration or login information.
Although Betternet takes security seriously - no logs are saved and all surfing is anonymous - be wary about entering personal data when connected to a third-party network.
Available on: Android, Price: Free Publisher: Betternet Technologies
5. Kustom Widget Maker
Widgets have always been a staple of the Android OS, but there are times when they simply don't look the way you want them to.
This is where Kustom Widget Maker steps in, giving users a simple set of tools for creating their own home screen widgets to display the data of their choice.
With this app, users can knock up digital and analogy clocks, live map widgets, sophisticated battery/memory meters, randomly changing images, music players, and, well, you get the idea.
Available On: Android, Price: Free, Publisher: Kustom Industries
6. 6Tribes
6Tribes is the latest arrival in the increasingly crowded social networking space - because the likes of Instagram, Twitter, Pinterest and Facey-B aren't enough, obviously.
Dreamed up by former BBC iPlayer boss Anthony Rose, the app provides an alternative to Facebook and Twitter by grouping users together into 'tribes' around their favourite subjects.
There are tribes for everything from craft beer to dragons, and with traditional social networks struggling to remain relevant, independent services like this could be the future of the sector. Maybe. Possibly. Probably not.
Available on: iOS, Price: Free, Publisher: UTD Networks
7. Game Tuner
Game Tuner is an app for mobile gaming fanatics with one of the latest Samsung smartphones that optimises devices for thumb-numbing play sessions.
It will fine tune your resolution and frame rate to ensure that those Angry Birds never peck away at your battery any more than they have to. Your handset should also stay nice and cool throughout.
Support is limited to the Galaxy S6, S6 edge, S6 edge+, and Note 5 at launch.
Available on: Android, Price: Free Publisher: Samsung
8. Live GIF
This is one app iPhone 6S and iPhone 6S Plus owners have been waiting for since the handsets launched – software for exporting their Live Photos as GIF files.
Live GIF converts your animated pictures into GIFs or short form movies so you can share them in that format on Facebook, Twitter, Instagram, or whatever's your social network of choice.
Of course, you can only snap Live Photos on Apple's latest handsets, so this is just a waste of storage space if you own an older iPhone.
Available On: iOS, Price: £1.49, Publisher: Priime
9. Boomerang
The latest app to come out of Instagram's doors is a middle ground between Vine and a GIF maker. It captures a bunch of burst photos and stitches them together into a second-long clip that loops backwards and forwards.
Moving images created using Boomerang add a kooky twist to your social networking profile, and they're about to start flooding a news feed near you.
The app doesn't even require an Instagram account, as all images are saved directly into your camera roll.
Available on: iOS, Available on: Android Price: Free, Publisher: Instagram
App of the week
Plume Air Report is our app of the week as it has the potential to improve the health of anyone who lives in the cities it covers - albeit in a small way.
You and your family can avoid the brunt of London's pollution with hourly air forecasts on your side, plus there's useful advice for parents, cyclists, runners and people dining out in the open.
