Are you looking to make your smartphone or tablet more useful? Each week, we collect the latest productivity apps for Android, iOS and Windows Phone; all of which are 100 per cent free! Here are this week's highlights.
This is a hand-picked list of free apps we've noticed this week while assembling our regular App Deals roundup of new and discounted apps. We haven't reviewed them and we don't endorse them. As with the main App Deals column, apps can stop being free at a moment's notice if they're discounted, so grab them quickly if you're interested.
neu.Annotate+ PDF From the publisher's description: "Read and annotate (markup) PDF documents. Annotations can be drawings, highlighting text, text notes, photos and stamps."
Coinverter -- The Currency Converter From the publisher's description: "Coinverter is a super-simple currency converter for iOS which provides you up-to-date currency rates. Convert amounts between unlimited number of currencies, even without Internet connection."
SynthTronica From the publisher's description: "SynthTronica is the unique and revolutionary synthesizer for iPad. SynthTronica takes full advantage of iPad's multitouch capabilities and delivers a powerful, clever and flexible way to make music."
MeteoEarth From the publisher's description: "Adapted from a professional weather broadcast tool used by TV presenters around the world, MeteoEarth truly brings the weather to life using high-end gaming technology and extraordinary graphics."
MeTweets From the publisher's description: "MeTweets is a Twitter client that goes beyond just Twitter. With a simple and easy-to-use interface it is perfect for beginners, yet it offers all features a power user would need."
Healthy Coach From the publisher's description: "Healthy Coach is the perfect complement to your exercise routines, as well as help you achieve your goals by tracking workout routines and diet programs."