With my Linhof Techno I've been using my own custom tables with hyperfocal, hinge distances and wedge spans for all my lenses and various apertures, and I still use them. However nowadays with always a smartphone in the pocket I've thought about having an app at least as a complement for some time. I've used a simple viewfinder app for quite some time to help in composition before I mount the camera, but I haven't really found a DoF app that I've liked more than simply using my printed tables.
I've had some ideas on how to make an app in a better way, at least as I see it :-). I started to work with it more than a year ago but it was put on ice due to other efforts, but finally I've been able to finalize it and release "Lumariver Depth of Field Calculator", available for both Android and iOS.
I've made a lot of free software in my days, but this one is not one of them so I guess you could call this a commercial, but I honestly do think it has a major relevance for tech users (and well any high resolution camera for landscape and architecture) and of course I designed it to use it myself. And if Phase One dealers can post, I hope I can :-).
It's probably a little bit too advanced for Average Joe, like most stuff I do it's niche. As that it's a bit more expensive too ($9), but I don't think anyone has put this much effort into a DoF calculator before...
Here's direct link to the store fronts:
...but the home page entry is more fun, where you find a demo video, instruction video and a user manual:
Lumariver Depth of Field Calculator homepage
What I often lack in other DoF apps is configurability, for example concerning circle of confusion, everyone seems to have their own preference of what it should be. I also prefer to have my own lenses setup rather than a drop-down to enter my focal length. I also think many apps have been lacking in efficient GUI layout, and I've addressed all those aspects.
When it comes to tilt calculators there haven't been much to choose from at all, there are one or two, but I haven't found one that even shows wedge span in actual height which I think is so much more useful for live view and ground glass users than just a degree value.
Oh, there's a focus-stacking mode there too to make the app "complete" as focus-stacking has become increasingly popular even in landscape applications. How useful that mode is will depend on what type of gear you have though, and like the tilt function it can be disabled if you don't need it so it won't clutter the user interface unnecessarily. I'm not a big fan of focus stacking myself but I've really tried to get into it and make it as useful as it could be.
I've attached a couple of screenshots. The design is oriented around a set of inter-connected scrollers and locks, and an animated diagram on top. We like metric units here in Sweden as seen in the screenshot but you can configure it to decimal feet too. I hope someone more than myself likes it :-), I've calculated that I would need to sell about 5000 copies to make break-even compared to the ordinary paid software development work I do, but if I manage to get 50 out of this niche app I'm happy, which I guess is about 50% of the total tech cam population these days so it's still a tough goal .