Check the acquisition promise
Read the store headline, screenshots and description. What problem is the app promising to solve?
Study the storefront ↗Essence Computing · iOS
Explore the ad evidence, study the storefront, and build your next acquisition hypothesis.
01 / Creative research
Read the store headline, screenshots and description. What problem is the app promising to solve?
Study the storefront ↗Explore apps with direct store-link matches. Compare their hooks and formats without assuming the same approach works here.
Browse observed advertisers ↗Store rankings and revenue estimates describe market context. They do not establish ad spend, conversions or ROAS.
Review the market context ↗02 / Storefront & product
Study the product story and store experience behind the acquisition funnel.
03 / Market context
Keep revenue, downloads and store rankings separate from advertising performance.
After getting the DoF app, I found out that it did not list my primary cameras - Hasselblad H5D-50, Hasselblad H6D-100 and Canon R5! Expecting the typical no-reply to a customer service inquiry, I was shocked and delighted to get an email WITHIN DAYS from Jim Chapple saying the cameras had been added. Wow! 😀 Thank you for top-notch customer service. And by the way, the app is fantastic, too! Knowing your DoF on portrait work, especially with medium format and telephoto lenses, is of paramount importance in creating sharper images.
I thought about running DOF charts for my new Nikon Z6 using Excel. Then I found this app. For $.99, I saved several hours of work (and got an easier-to-use product). The app is simple, intuitive, yields clear results and is a very handy tool to have no further away than your phone when you’re setting up a shot. Nice job.
Depth of field is vital to a picture's success, but largely overlooked by even the most expensive cameras. Autofocus will find something in the viewfinder that will be in focus, and with most cameras you can choose what point must me in focus. But getting that point in focus will only lead to disappointment if something else important is out of focus. Depth of Field Calculator allows you to specify your camera, and then to enter the distance to your point of interest (generally pretty easy to estimate closely enough), your f/stop aperture, and the focal length of your lens. Bingo, back comes the closest point that will be in focus and the furthest. Better yet, if you current settings don't produc a result you need (e.g., a foreground point in focus as well as the horizon), the inexpensive add-in Depth of Field Variants allows you to see how the results change with a tabular range of different distances, or apertures, or lens lengths. Your first few exercises may take a minute or so. But surprisingly soon you'll get a feel for things, and can zero in on the result you want very quickly. No more coming back from a far away vacation with that distant mountain range blurred in your favorite picture, or your wife's face in the foreground a blob.
Camera list updated to beginning October 2024. If yours is not listed please email stating which one is missing and I will be happy to add it to the...
| Name | Price | Type |
|---|---|---|
| Purchase Depth of Field Variants | $0.99 | One-time |
| Purchase Exposure Calculator | $0.99 | One-time |
| Purchase EXIF Manager | $1.99 | One-time |