Tanmay Sonawane has Write for Dropbox – A Beautiful Note Taking App (iTunes Link) for the iPhone and iPod Touch or Write (iTunes Link) for the iPad in the iTunes App Store for 99-cents (regularly $1.99) for a limited time.

Write is a simple writing app that automatically syncs with Dropbox. It supports Markdown, acts as a remote keyboard, remote clipboard, and more.

Remote keyboard will allow you to use your iPad or iPhone as an external keyboard for typing while your other iPad or iPhone handles the main Write workflow.

Remote Clipboard will allow you to use your other iOS device as a clipboard. Here’s a typical scenario, say you are writing something on your iPad and you want to research something in Safari or copy something over. Now the typical thing to do would be to minimize the app, open Safari, copy over things you need and then open Write again and paste it. But what if you could use your idle iPhone to research, anything you copy on your iPhone in any app would automatically be available on the iPad inside the Writing area of Write app. The first time you use this, it would totally feel like magic!

Acqualia has Soulver Notepad Calculator (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for $1.99 (regularly $3.99) for a limited time.

Acqualia also has Soulver Notepad Calculator (iTunes Link) only for the iPad in the iTunes App Store for 99-cents for a limited time.

Soulver is the ultimate app for doing quick calculations and figuring stuff out on the iPhone & iPad. It’s a far more elegant way to work with numbers than a traditional calculator.

With Soulver, you write out your entire problem and you see your answer as you type. If you make a mistake, you don’t have to start again, you can edit your expression like in a text editor.

You can do calculations over multiple lines, and change any of them. You can use words alongside your numbers so they make sense which it’s great for comparing different scenarios.

Soulver is great for adding things up, and doing quick percentages. Soulver will also save your work for you when you’re done, and sync it using iCloud or Dropbox.

Once you try Soulver, you’ll never want to go back to a simulated physical calculator.

Infraware Co.,Ltd has Polaris Office (iTunes Link) for the iPhone, iPod touch, and iPad in the iTunes App Store for 99-Cents (19.99 – 19 instant savings) for a limited time. Deal expires December 14, 2013.

POLARIS Office is a mobile office solution that allows users to view/edit MS Office documents on iPhone/iPad. Users can view/edit text files and view .pdf and .hwp files. POLARIS Office supports convenient features for mobile users such as direct opening of email attachments, cloud service, file manager and more.