Cant Forget is a free iPhone app developed by Daniel Guenther to help users remember recurring tasks that don't require a calendar entry. It also serves as a reminder for aspirational activities like exercise. With Cant Forget, you can create reminders for each activity or simply have freeform activities that you mark whenever you complete them.

The app allows you to set reminders to occur just one time, daily, weekly, monthly, or yearly. For weekly, monthly, and yearly reminders, you can even set multiples of those periods. Daily reminders can be customized to any arbitrary set of days during the week. Cant Forget sends local push notifications to remind you when it's time for each activity.

The calendar view in Cant Forget displays reminders planned for each day, upcoming reminders, and a list of activities already marked as done for the day. You can easily remove the badge count for a past item or cancel a reminder for an activity. The app also allows you to review past and future days to keep track of your completed tasks and plan ahead.

The activity screen in Cant Forget features a fully integrated search function that allows quick access to activities when you have a large number of them. You can select activities to review their current schedule, completion history, or modify their settings.

The settings screen in Cant Forget offers eight color schemes to choose from. Additionally, you can customize the "Coming Soon" section in the calendar screen by setting how far in advance items with weekly, monthly, and yearly reminders should be displayed. There is also an option to watch a video ad, if available, to remove banner ads for several days.

Overall, Cant Forget is a useful reminder app that helps you stay on top of those annoying tasks and keep track of your progress. With its intuitive interface and customizable features, it is a valuable tool for improving productivity and managing your daily activities.