On the BoostApps Forum, user tAG has been trying out file explorer apps on his Incognito. He found a couple that work, this one and another I can't post because it's comercial.  According to the publisher;

"Royal File Explorer is a powerful File Manager for Java J2ME enabled mobile phones. It is the complete tool for managing your files on your mobile phone.

It has features like Copy/Paste, Rename, Delete, Create Directory, View File Properties, Read and Write Protection of files, Hidden Files."

File explorer apps are generally only useful with Boost phones that have a memory card.  The phones' internal memory is locked down and inaccessble to 3rd party apps.  One possible exception is the Sanyo Mirro which supposedly has a folder in internal memory that is accessible.

I tried Royal File Explorer on my Motorola i776 and Motorola Rambler. It installs on both but isn't usable .

On the Rambler it displays a blank screen and locks up.

On the i776 it shows a couple of empty directories but  doesn't let you do anything with them. There also seems to be a key mapping issue on the i776 as the left soft key, which is supposed to be the Menu key, doesn't work and none of the other keys bring up a menu either.

For now the only phone that Royal File Explorer is known to work on is the Incognito.  Leave a comment if you try it on a different phone and it works.

There's another file manager on BoostApps called Ultimate File Explorer that is known to work on the i856 and other iDEN phones with memory cards.

Type: Freeware
Author: Royal Softs
Data Connection Required: no
Minimum Java ME profile: MIDP 2.0
Screen Size: All
Boost CDMA Compatible: (tested on Sanyo Incognito): Yes, (does not work on Motorola Rambler or Samsung Rant)
iDEN Compatible: (tested on i776):  No, moght work on iDEN phones with memory cards
Supported Boost Phones: All CDMA with memory card (Incognito, Innuendo, Bali, Seek, KRZR, etc.)

The app "Royal File Explorer" (21 KB) is ready to download or send to your phone as filename:"RoyalFileEx".

Three geeky tools in one.

Prime number checker: For math lovers, determime if a number is a prime number.

Al bhed translator: Al bhed is a language spoken by a race in the game Final Fantasy 10. This tool coverts from Al bhed to English and vice versa.

Programmer's calculator ,  Binary / Hex / Octal / Decimal / ASCII converter: Convert between any of the formats.

The app "Geek tools" (11 KB) is ready to download or send to your phone as filename:"GeekTools".

Type: Free Open Source
Author:  Jason Whatson
Data Connection Required: No
Minimum Java ME profile: MIDP 2.0
Screen Size: All
iDEN Compatible: (tested on i776): Yes
Boost CDMA Compatible: (tested on Motorola Rambler): Yes
Supported iDEN phones: All Falcon series (1290, i465, i776, i856, i9, etc.) with Java
Filesize: 11 KB

ELC (Expandable Liner Converter) is a program for converting between units of weight, distance, mass, time, speed, temperature, etc.  It has hundreds  of units predefined and it's extensible, meaning you can add your own units.

The program is a little tricky to use. Here's how:

• When the program starts it displays a list of types of conversions (Acceleration, Angle, Area...) as shown in the image.
• Highlight a type, for example "Area" and press the softkey labeled "Menu".
• Choose "Convert" and then press the Menu key again and set the From M.U. (Measure Unit) for example "Acre".
• Press Menu again and choose the To M.U., for example "Ft^2" (Square foot).
• Enter the value you want to convert in the first field, the second field instantly shows the converted value.

ELC doesn't seem to work on my i776. When you start it, the list of conversions doesn't appear, just the phrase "Expandable Line" so there's no way to use it. It works fine on the Rambler.

The app "ELC" (49 KB) is ready to download or send to your phone as filename:"ELC".

Type: Free Open Source
Author:  Simone Pernice
Data Connection Required: No
Minimum Java ME profile: MIDP 2.0
Screen Size: All
iDEN Compatible: (tested on i776): No
Boost CDMA Compatible: (tested on Motorola Rambler): Yes
Supported iDEN phones: None known
Filesize: 49 KB

There are ten independent counters. Press the 1 through 9 or 0 key to add one to each counter. As you count a bar or pie chart is updated.

Each counter can be labeled and you can change the chart colors. There is an option to beep when the counter the total of all the counters reaches 100 or another number you specify.

Contributed by: arnold040
Type: Freeware
Author: Handylearn Projects
Data Connection Required: No
Screen Size: All
iDEN Compatible: (tested on i776): Yes
Boost CDMA Compatible: (tested on Motorola Rambler): Yes
Supported iDEN phones: All  Falcon Series (MIDP2) with Java ( i9, i856, i776, i465, i290, etc.)
Filesize: 51 KB

This app is an electronic clicker for counting things such as  stitches or rows in knitting or crocheting, products on a conveyor belt, people entering a room or building, etc.

It allows you to define multiple independent named counters, switch between counters and count up or down.

Keys:
Call = OK, Select in Menus
Right = Increase the count by one
Left = Decrease the count by one
Up, Down = Switch counters

Contributed by: arnold040
Type: Freeware
Author: Yohanes Nugroho
Data Connection Required: No
iDEN Compatible: (tested on i776): Yes
Boost CDMA Compatible: (tested on Motorola Rambler): Yes
Supported iDEN phones: All  (MIDP1) with Java ( i9, i856, i776, i465, i290, etc.)
Filesize: 13 KB

A mobile widget framework that can run hundreds of different widgets including a weather app, headline feeds from CNN, CNN, Yahoo, Techmeme and many other on-line news sources, a notepad, to-do list and Twitter and Facebbok clients.

WebWag needs a fast processor, large screen and lot's of memory to run well. I found it frustratingly slow on my i776. Some of the widgets, like the weather one, were to big for the screen. It should be better on the i9 or i856 and StratMatt, who found WebWag and posted it on the BoostApps forum, says it works flawlessly, other than the usual key mapping issues, on his i465.

When you install WebWag it asks you about your interests and adds a number of widgets based on your answers. You can add and remove widgets using the app but if you have a PC, it's easier and faster to configure WebWag using the desktop web site at webwag.com/startup/

I found that the news feeds like CNN and Engadget worked best on my i776. The Twitter client also worked pretty well and was quite attractive. But it was very slow and unlike dabr.co.uk it can't display Twitpics and other embedded Twitter content. The Facebook client seems broken and get an error every time I tried to log in.

Contributed by: StratMatt
Type: Freeware
Author: WebWag
Data Connection Required: Yes
Boost CDMA Compatible: (tested on Motorola Rambler): No (hangs on start screen)
iDEN Compatible: (tested on i776): Yes
Supported iDEN phones: All Falcon series with Java ( i9, i856, i776, i465, i290, etc.)
Filesize: 447 KB

An app to help you learn Morse Code. It has three functions:

Displays the code for each letter, number and special character  and play them as tones.
Translate any word or phrase up to 252 characters into Morse Code and display and play the code.
Tests.  A set of coded phrases is displayed and played.  You have to enter the equivalent text correctly to pass.

This app is locked and has limited functionality until you enter an unlock code.  Register at javaphone.it/en/reg.php to get the code sent to your email for free.

Contributed by: arnold040
Type: Ad-supported
Author: javaphone.it
Data Connection Required: No
Boost CDMA Compatible: (tested on Motorola Rambler): Yes
iDEN Compatible: (tested on i776): Yes
Supported iDEN phones: All Falcon series with Java ( i9, i856, i776, i465, i290, etc.)
Filesize: 28 KB

If you register for free at www.spytooth.com you can save  found devices as "friends" and Spytooth will alert you with a beep or vibration when one of your friend devices comes into range.

Registration requires entering a unique code  that Spytooth displays when you run it, plus an email address that the unlock code is sent to.  You also need to enter a captcha code which is difficult to do without a PC,

Unlike some of the other Bluetooth apps posted here, Spytooth doesn't let you send messages to other phones, make phone calls, turn the other phone off or view additional information about it such as the phone number, firmware version, battery level, signal strength, network ID and SIM ID.

Contributed by: arnold040
Type: Ad-supported
Author: Spytooth
Data Connection Required: No
Boost CDMA Compatible: (tested on Motorola Rambler): No (Internal Error on startup)
iDEN Compatible: (tested on i776): Yes
Supported iDEN phones: All Falcon series with Java ( i9, i856, i776, i465, i290, etc.)
Filesize: 44 KB

A virtual coin flipper for those times you have to pick a winner and don't have a coin to toss.  Choice of US Quartet, British Pound or Euro coins.

Left Call or softkey to flip, Menu key to change coins

Contributed by: vurt
Type: Freeware
Author: Bouncing Elephant
Data Connection Required: No
Supported iDEN phones: All with Java ( i9, i856, i776, i465, i290, etc.)
Filesize: 56 KB

For chemists and chemistry students here's a pocket reference to the Periodic Table. Use the arrow keys to navigate around the the table. Press the call key to view details (electron configuration, crystal structure, specific gravity, melting point and much more)  about the highlighted element.

Contributed by: vurt
Type: Freeware
Author: Markus Goldkamp
Data Connection Required: No
Supported iDEN phones: All with Java ( i9, i856, i776, i465, i290, etc.)
Filesize: 18 KB