Mekorama is a worthy addition to the puzzle-game genre, with pretty mechanical puzzles and an adorable robot that players are charged with getting from Point A to Point B. Players can move the robot through its mazes by tapping on accessible squares. But it’s not always a clear path to the end point.

Players must drag movable parts of the levels to clear obstacles or plug gaps in the landscape that might keep the little droid from reaching the finish line. This free game comes with 50 levels – and plenty of mental exercise.

The developer regularly posts new levels on Facebook and Twitter that can be downloaded. Users can build their own levels and share them, using a Minecraft-like system that lets you create your levels block by block.

There are in-app purchases to get hints, but it’s generally a pay-what-you-like system. The app will also ask you in certain circumstances to throw a little money (a buck or two) the developer’s way. It’s a small price to pay for the enjoyment. Free, for iOS and Android devices.

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A good calendar app can be hard to find, particularly if you want something attractive, feature-rich and easy to use. June takes a good run at being all of those, plus a decent to-do app to boot.

The app makes it easy to move appointments around and annotate them. So a “dentist appointment” reminder, for example, can quickly be placed on your calendar once you’ve scheduled it. You can also save websites you’ve navigated to directly to a memo in the app.

Features vary depending on whether you’re using an Android phone or an iPhone – for example, on an Apple device you can connect to iCloud, which isn’t available on Android.

The app does require in-app purchases to connect to certain services such as Evernote or the iOS Reminders app. And it works with only some services: Google, Evernote and Facebook. June, by virtue of being a three-in-one app, doesn’t perfect any of its functions. But in terms of having a comprehensive to-do, memo and calendar app, you could do a lot worse than this colorful offering. Free, for iOS and Android devices

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