See http://ryoeguchi.blogspot.com/p/simplememo.html

SimpleMemo is memo pad application. It has the following characteristics.

* You can make your memo into secret.
You can make your memo into secret.
1. Set your passcode in SimpleMemo settings.
2. Set your secret level to 'Mask Excerpt', 'Mask' or 'Hidden' in SimpleMemo settings.
3. Mark a memo as secret enabling padlock icon in the memo view.

* You can choose the way of showing your secret memos in the memo list view.
- Show
- Mask Excerpt
- Mask
- Hidden
- Show Title Only

* You can use templates in editing your memo.
A template can be edited freely. A string can be assigned to a button.
When you edit a memo, an assigned button is showed at the top of the keyboard.
Today's date and time can be assigned, too. And a date and time form can be customized, too.

* You can make a shortcut to a memo.
A shortcut can be made in the top view of SimpleMemo.

* You can search your memos.
The full-text search function is provided.
When you search on the category list view, the category of the memo which contains a search string will be narrowed.
When you search on the memo list view, the memo which contains a search string will be narrowed.
You can transit under the narrowed condition between the category list view, the memo list view and the memo view.

* You can email your memo.
You can email your memo.
You can embed some keywords of 'Subject:', 'To:', 'Cc:', 'Bcc:' in the first four lines of your memo. They will be used when you e-mail.
For example:
Subject: Good idea
To: foobar@m.evernote.com
Bcc: barbaz@gmail.com
I have a good idea.
...

* You can organize your memos by categories.
You can organize your memos by categories.
You can create new category, edit your category name, reorder categories in the category list view.

* You can change font family and font size.
You can change font family and font size in the whole of SimpleMemo. You can choose a font size from 1pt to 99pt.

* You can add a new memo quickly.
You can add a new memo quickly by pushing the + button of the upper right corner in the category list view, in the memo list view or in the memo view.

* You can copy your memo quickly.
You can copy your memo quickly by pushing the copy button on toolbar in the memo view.

* A portrait and a landscape view are supported.
A portrait and a landscape view are almost supported in all the views. And, a present view direction can be locked.

* You can backup or restore.
You can backup your whole memos in your device.
You can restore your whole memos from your device.

* You can export or import your backup data.
You can export your backup data to your PC/Mac.
You can import your backup data from your PC/Mac.

* You can edit your memos by a web browser of your PC/Mac.