This seems like a viable solution. Just download whatever CSV file from the database, and open it in Numbers. Edit as needed.
Spreadsheets are nice but are better at computing than templates. I use them for smallish database files of lists myself.
I've also been looking for something "specific" to SWL/Radio that could be fun to develop. One idea that I like is having an attachment. Attachments could be audio recordings, logs, photos, skeds, HF Fax images, HFDL output, etc.
One area that's proven more complex of iOS development is making efficient use of the app space. On the surface, it seems easy but it can be frustrating at times... Since 98% of the users are using touch as the primary input method. Having to handle the pop-up keyboard and shifting the perspective is slightly tricky. Ideally, having pre-defined inputs would be ideal but not always practical for SWL.
The next complexity would be learning to store the app data to iCloud for off-site backup.
