There are hundreds of mobile apps out made there to help you take notes, memos, plan, capture text and keep important information readily available when you them. In no particular order these mobile apps are some of the great productivity mobile apps out there you can try.
# Catch is a free feature-packed app that allows you to capture your ideas and experiences across all your devices with secure auto-syncing to the cloud. Capture photos, jot notes, record voice memos and map your location. You can backup notes for free across iPhone, iPad, and on the web with secure sync to Catch.com over SSL.
# Springpad is a free application that makes it quick and easy to take notes and save anything you want to remember in one place – from tasks and lists to products. Springpad updates its web app for offline support and data backup. Springpad also offers collaboration with other users. You can invite others to collaborate with you by clicking on ‘My Account’ and then on ‘members’.
# Evernote helps you take notes, save them, tag them with a location, create and organize notebooks, and share them anywhere you are and on any device you happen to have on you. Evernote has a webapp, desktop apps for Windows and Mac OS, mobile apps for iPhone and iPad, Android, BlackBerry and Windows Phone 7.
# Simplenote is an easy way to keep notes, lists, ideas, and more. Keep notes on the web, your mobile device, and your computer. Simplenote lets you easily jot down your thoughts and organize them by tag, search note contents and tags late.
# Zoho Notebook is one of the most feature-laden online note application. Zoho Notebook provides you a palette where you can type and add image, audio, video, html, urls, RSS, files, sheets, and more.
# Notability (99 cents; iPad only) allows you to capture ideas, share insights, and present information in one perfect place on iPad. Notability powerfully integrates handwriting, PDF annotation, typing, recording, and organizing so you can take notes your way! You have the option to open notes from Dropbox, or from your iDisk on MobileMe, or you can open a note directly out of the iPad e-mail app.
# AudioNote combines the functionality of a notepad and voice recorder. Aside from functioning as a basic note-taking app, AudioNote can make sound recordings at the same time, and keep them synchronized, note by note, with the text.
# UberNote is an online note taking system which enables you to quickly store your notes from anywhere. You can send direct messages through Twitter and save them as notes on Ubernotes. Other main features include Firefox Toolbar for Ubernote with which you can clip different websites, save bookmarks and much more.
# Memonic is an online notetaking application that allows users to save and organize information while conducting research online and offline. Content may be clipped using a range of bookmarklets and extensions for various browsers or by using the desktop application. A clip may be a full webpage or webpage excerpt, a document or document excerpt, a text note, or a screenshot.