Apple offers a great selection of premium apps that you can get from the App Store without cost. This is a limited-time offer so these iOS apps on sale may go back to their original price without prior notice.

IBTimes Singapore lists 15 iOS apps that you might want to download now for your iPhone, iPod or iPad while they are still free. Most of the apps here can be conducive to your daily productivity so go check them out below!

SYS Pro (US$0.99)

SYS Pro is a system data real-time monitoring application with a perfect design, which can add the monitoring data plug-in to the notification centre, so you can keep abreast of the data on the equipment.

Download SYS Pro for iOS from the App Store.

Streets of Rage Classic (US$0.99)

One of SEGA's all-time greats, Streets of Rage is now available on mobile! Play free and rediscover this ground-breaking beat-'em-up. Streets of Rage joins the ever-increasing line-up of 'SEGA Forever', a treasure trove of free SEGA console classics brought back to life on mobile!

Download Streets of Rage Classic for iOS from the App Store.

Top Folders Pro (US$4.99)

Create high-quality PDF scans of any document in seconds! Sign, print, sync and access your preferred cloud service > Dropbox, OneDrive, Google Drive and Box. This is supported by Touch ID to keep your documents safe, it's like having a powerful office scanner in your pocket.

Download Top Folders Pro for iOS from the App Store.

Veer Editor (US$0.99)

VeeR Editor is the most intuitive and fun 360 video/photo editor for smartphones. It supports all major 360 cameras, including the new Samsung Gear 360, Insta360 One, Ricoh Theta S and Mi Sphere Camera.

Download Veer Editor for iOS from the App Store.

Splashtop Personal for iPhone (US$2.99)

Use Splashtop to access your computer on the local network with best-in-class video streaming performance. View and edit Microsoft Office and PDF files. Browse the web using IE, Chrome, and Firefox with full Flash and Java support. Play 3D PC and Mac games. Access your entire media library and documents.

Download Splashtop Personal for iOS from the App Store.

Rainbow - Custom Coloured Keyboard Themes & Skins (US$0.99)

Bored of the classic greyish iPhone keyboard? Now is the time to add some rainbow colour strokes to your keys with the new Rainbow keyboard, exclusive for iPhone & iPad. Changing the colour of your keyboard can be done in seconds, choose the theme that matches your style or even your clothes!

Download Rainbow for iOS from the App Store.

GetFeet Step Counter (US$0.99)

Walk epic distances with the GetFeet step counter app. See how your combined step count compares with epic distances from around the world. Check your progress on more than 50 distances including the Great Wall of China, the height of Mount Everest and the Pacific Crest Trail. Set epic distances as goals to reach. Earn medals. Unlock new distances.

Download GetFeet Step Counter for iOS from the App Store.

Reach (US$0.99)

Reach is a widget that quickly gets you directions to common destinations of your choice with just one tap. No more fumbling around with your maps app trying to type in your address to get home!

Download Reach for iOS from the App Store.

B-Side (US$1.99)

B-Side is for musicians or anyone who wants a quick and easy way to record themselves singing and playing piano or guitar. It's the perfect way to record, save, and share your songs and song ideas. Swipe to add pre-set effects so your recording comes to life and share it with friends and family.

Download B-Side for iOS from the App Store.

Fitness AR (US$0.99)

Explore your Strava bike rides and runs in augmented reality. A beautiful 3D terrain map, powered by Mapbox, is placed in the real world allowing you to walk around and explore your past activities in a way that wasn't possible before.

Download Fitness AR for iOS from the App Store.

Mr Cocktail (US$0.99)

Every drink and ingredient has an actual picture to highlight its' qualities. Recipes are historically accurate and have a description of their origins and evolution. Ingredients are non-specific. Regardless of what brand of Bourbon you own, you can make any Bourbon cocktail. Mr Cocktail is also smart enough to know what ingredients can be substituted for others.

Download Mr Cocktail for iOS from the App Store.

PandaMoji (US$0.99)

Tired of sending boring text messages? Make your chats amusing with PandaMoji.

Download PandaMoji for iOS from the App Store.

PhotoWidget+ (US$0.99)

This app lets put your favourite photo into the widget. Its supports animated GIF and import photos into the Photo app, as well as shoot photos or videos through the app.

Download PhotoWidget+ for iOS from the App Store.

Blinq (US$0.99)

Blinq allows you to keep track of your expenses easily and quickly. It's an entry point to money saving, the easiest way to keep your home budget balanced. The app combines pragmatic approach to personal finances and an intuitive UI to help you keep track of your personal finances without a struggle. Every time, everywhere, in a blink of an eye. Blinq is a personal finance journal for a busy people.

Download Blinq for iOS from the App Store.

The Ovulator (US$0.99)

The Ovulator calculates your fertility window by utilizing your data to give you the best days of fertilization to occur. The goal of this app is to educate and allow the user to become more aware of her menstrual cycle and the other symptoms consistent with ovulation.

Download The Ovulator for iOS from the App Store.

With all the selection above, you surely have your favourites. Better grab them now while they're still free!