amongst other things, an iPhone is ideal to support people with their hobbies.
I have written two iPhone Applications that may help in this area.

The Electronic Toolbox iPhone App is a set of 12 mini-Apps that helps electronic hobbyists in many areas such as calculations, database for electronic devices, formulas etc.
More information can be found here.
Electronic Toolbox can be found here in Apples AppStore.

The iPhone App iCluster will help HAM-Radio operators to get an overview of the current situation on-air.
Details to this application can be found here.
iCluster was released by Apple since October 31st and can be downloaded here.

Quotes is the newest iPhone Applikation, which is available in AppStore since December 4th.
More information about this App can be found here.

News:
| Date | This is new... |
|---|---|
| 12.12.09 | Apple was really quick this time. Update 1.03 of Electronic Toolbox has been released today by Apple and is available in AppStore. Further information about this update can be found here. |
| 08.12.09 | Version 1.01 of Electronic Toolbox has been released by Apple and is available in AppStore now. |
| 26.11.09 | A new Version 1.01 of Electronic Toolbox has been submitted to Apple. |
| 20.11.09 | Since today, Electronic Toolbox can be found here in Apples AppStore. |
| 19.11.09 | The new applikation "Quotes" will be sent to Apple soon. |
| 31.10.09 | iCluster has been released by Apple and can be downloaded here. |
| 28.10.09 | Electronic Toolbox was submitted to the App Store. |
| 01.10.09 | The German magazine Funkamateur mentioned iCluster in issue 11/09 on Page 1177. |
| 30.09.09 | iCluster was submitted to the App Store and is awaiting Apples release. |
73, Marcus, DL8MRE