I'm just going to add some comments to the conversation.
* I get mails from time to time from users asking if there's a mobile version available. This forum isn't really that much visited, so response is most likely lower than the actual request. Edit: have a look at the
download statistics which might give a rough estimate of the amount of users.
* View-only is a good way to have something available. It was my first choice as well for a mobile app.
* If the app is open source I'm willing to mention/link it on the website. Being FOSS is one of the Pigeon Planner features and I want to keep it that way.
* The database is a single SQLite file. Pigeon Planner uses the
user_version PRAGMA to indicate schema changes. This doesn't happen often though and there aren't really any changes planned at the moment. Current version is 3, I'd recommend to check that the user's database has at least this version.
* Unless clipper's software is written in the same programming language, it's most likely very hard to just copy features over between the two applications. So things should be reimplemented.